vehicle data sheets - stardestroyer.net75mm hmc m8 76mm gmc m18 155mm hmc m41 vehicles assigned to:...

ACCEPTANCES OF LIGHT TANKS AND RELATED VEHICLESFROM U.S. PRODUCTION DURING THE PERIOD 1940-1945

Vehicle

Light Tank M2A4Light Tank M3Light Tank M3 (diesel)Light Tank M3A1Light Tank M3A1 (diesel)Light Tank M3A3Light Tank M5Light Tank M5A1Light Tank M22Light Tank M24Medium Tank M7 (Lt. Tk. T7E5)Light Tank M3A3, Reman*Light Tank M5, Reman*Light Tank M5A1, Reman*40mm GMC M1975mm HMC M876mm GMC M18105mm HMC M37155mm HMC M41Armored Utility Vehicle M39*

TotalAcceptances

375452612854410211

342720746810

8304731

7166

2775300

17782507

15085

640

FirstAcceptances

May 1940March 1941

June 1941May 1942

August 1942September 1942

April 1942November 1942

April 1943April 1944

December 1942March 1945

January 1944November 1944

April 1945September 1942

July 1943September 1945

June 1945October 1944

FinalAcceptances

April 1942October 1942January 1943January 1943October 1942

September 1943December 1942

June 1944February 1944

August 1945February 1943

May 1945May 1944June 1945

August 1945January 1944October 1944October 1945

September 1945March 1945

*Remanufactured or converted

DISTRIBUTION OF LIGHT TANKS AND RELATED VEHICLES TO INTERNATIONAL AIDUNDER THE LEND-LEASE PROGRAM AS OF 1 SEPTEMBER 1945*

Vehicle

Light Tank M2A4Light Tank M3Light Tank M3 (diesel)Light Tank M3A1Light Tank M3A1 (diesel)Light Tank M3A3Light Tank M5A1Light Tank M22Light Tank M2475mm HMC M876mm GMC M18155mm HMC M41

Vehicles Assigned To:Total

International Aid

363130

1702433

2033221662260291174

71

* Transfers in theaters of operation and minor shipments after 1 September 1945 are not included

464

Soviet Union

01336

0340

00502050

Other

010

120499

201277226

00

17400

United Kingdom

361784

501594

020451431260289

021

VEHICLE DATA SHEETS

Data sheets are provided in this section for all of theproduction light tanks which served in the United StatesArmy during World War II. In addition, sheets are includedfor the World War I six-ton M1917 and the Ford three-tonM1918 light tanks as well as several later experimental tanksand vehicles based upon the light tank chassis.

The data were obtained from a wide variety of sourceswhich frequently did not agree. The vehicle dimensionswere taken from the production drawings if they could belocated. Some dimensions, such as the height and groundclearance, obviously varied with the spring compressionunder changes in vehicle load. If the drawings were notavailable, test reports from Aberdeen Proving Ground andFort Knox provided a source of information. Weights takenfrom such sources often varied widely reflecting modifi-cations and changes in the vehicle stowage. When possi-ble, the weights selected were appropriate for the vehicleduring its period of greatest service. For single experimentalvehicles, the exact weight is quoted if it is available. Insome cases, only estimated weights could be obtained. Forproduction vehicles, the weight is usually rounded off tothe nearest 1000 pounds. The combat weights listedincluded the crew and a full load of fuel and ammunition.

Most of the terms in the data sheets are self-explanatory, but some may need clarification. For exam-ple, the fire height is the distance from the ground to thecenter line of the main weapon bore at zero elevation.Unless otherwise specified, the ground contact length atzero penetration is the distance between the centers of thefront and rear road wheels. This value is used to calculatethe ground pressure of the vehicle using the combat weight.The tread is the distance between the track center lines.The terms left and right are in reference to someone sit-ting in the vehicle driver's seat. When available, the enginepower and torque are reported as gross and net values. The

gross horsepower and torque are those developed by theengine with only the accessories essential to operation. Itdoes not include the effect of such items as generators, aircleaners, and cooling fans. The net horsepower and torqueare the values obtained with the engine installed in the vehi-cle with all of its accessories. All power to weight ratioswere calculated using the combat weight of the vehicle.

The armor is specified as to type, thickness, and theangle with the vertical. Early vehicles were protected byrolled, face-hardened steel armor and were assembled byriveting or bolting. During World War II, this type of con-struction was superseded by rolled or cast, homogeneoussteel armor and welded assembly. The angle quoted is theangle between a vertical plane and the armor plate sur-face as indicated by the angle alpha in the sketch. Alsonote that in this two dimensional sketch, alpha is equalto the angle of obliquity shown by the angle beta. The lat-ter is defined as the angle between a line perpendicularto the plate surface and the path of a projectile impactingthe armor. This angle is used to specify the armor penetra-tion performance for various types of projectiles.

465

SIX-TON TANK M1917 (SIX-TON SPECIAL TRACTOR)

GENERAL DATACrew: 2 menLength: Without tailpiece 166 inchesLength: With tailpiece 197 inchesWidth: Over tracks 70 inchesHeight: 91 inchesTread: 57 inchesGround Clearance: 16.2 inchesFire Height: 70 inchesTurret Ring Diameter: (inside) 36 inchesWeight, Combat Loaded: 14,500 poundsWeight, Unstowed: 13,400 poundsPower to Weight Ratio: Gross 5.8 hp/tonGround Pressure: Zero penetration 6.9 psi

6 inch penetration 4.9 psi10 inch penetration 4.1 psi

ARMORType: Rolled face-hardened steel; Bolted and riveted assemblyHull Thickness: Actual Angle w/Vertical

Front, Driver's Cupola 0.60 inches (15mm) 17 degreesDriver's Doors 0.31 inches (8mm) 70 degreesUpper 0.60 inches (15mm) 30 degreesLower 0.60 inches (15mm) 30 degrees

Sides 0.60 inches (15mm) 0 degreesRear 0.60 inches (15mm) 0 degreesTop, Front 0.31 inches (8mm) 90 degrees

Rear 0.31 inches (8mm) 65 to 90 degreesFloor 0.25 inches (6mm) 90 degrees

Turret Thickness:Gun Shield 0.60 inches (15mm) 0 degreesFront 0.60 inches (15mm) 12 degreesSides 0.60 inches (15mm) 12 degreesRear 0.60 inches (15mm) 12 degreesTop 0.31 inches (8mm) 73 to 90 degrees

ARMAMENT(1) 37mm Gun M1916 in turret ball mountMovement of 11 7/8 inch ball mount

Vertical 56 degrees, horizontal 30 degreesor

(1) .30 caliber MG M1919 in turret ball mount (originally Marlin tank MG)Movement of 9.1 inch ball mount

Vertical 48 degrees, horizontal 30 degreesTurret Traverse: Manual, either mount 360 degrees

AMMUNITION238 rounds 37mm

or4200 rounds .30 caliber

SIGHTING AND VISION DEVICESDriver: Hatch and vision slots (5)Gunner: Telescopic sight M1918 for 37mm gun

orOpen sights for MG (rear, tubular; front, blade)Hatch, vision slots (3), and pistol ports (loop holes) (2)

Total Vision Slots: Hull (5), Turret (3) in cupolaTotal Pistol Ports: Hull (0), Turret (2) (loopholes)

ENGINEMake and Model: Buda HU modifiedType: 4 cylinder, 4 cycle, vertical L-headCooling System: Liquid Ignition: MagnetoDisplacement: 312.1 cubic inchesBore and Stroke: 4.25 x 5.5 inchesGross Horsepower: 42 at 1460 rpmFuel: Gasoline 30 gallonsPOWER TRAINMaster Clutch: Inverted coneTransmission: Selective sliding gear, 4 speeds forward, 1 reverse

Gear Ratios: 1st 3.13:1 4th 0.61:12nd 1.54:1 reverse 3.13:13rd 0.94:1

Steering: Clutch-brakeBrakes: Mechanical, external contractingFinal Drive: Spur gear Gear Ratio: 30.56:1Drive Sprocket: At rear of vehicle with 15 teeth

Diameter: 25.5 inches (outside)RUNNING GEARSuspension: Coil and leaf springs

10 lower track rollers in 2 bogies (I/track)8 lower track rollers in 2 bogies (I/track)Lower Roller Diameter: 7 inches12 upper track support rollers (6/track)Upper Roller Diameter: 4.75 inchesAdjustable idler at front of each trackIdler Size: 33.1 inches

Tracks:Type: Single pin, 13.375 inch width, cast steel with integral grouserPitch: 9.842 inchesShoes per Vehicle: 64 (32/track)Ground Contact Length: 79 inches, zero penetration

110 inches, 6 inch penetration131 inches, 10 inch penetration

COMMUNICATIONSFlag setFIRE PROTECTION

(2) 1 quart Pyrene fire extinguishersPERFORMANCEMaximum Speed: 1st and reverse gears

2nd gear3rd gear4th gear

Maximum Drawbar Pull:Maximum Grade:Maximum Trench:Maximum Vertical Wall:Maximum Fording Depth:Minimum Turning Circle: (diameter) w/tailpieceCruising Range: Roads

1.1 miles/hour2.2 miles/hour3.5 miles/hour5.5 miles/hour

12,600 pounds70 per cent7 feet

36 inches24 inches20 feet

approx. 30 miles

466

FORD THREE-TON SPECIAL TRACTOR

GENERAL DATACrew:Length: Without tailpieceLength: With tailpieceWidth:Height:Tread:Ground Clearance:Fire Height:Weight, Combat Loaded:Weight, Unstowed:Power to Weight Ratio: GrossGround Pressure: Zero penetrationARMORRolled face-hardened steelHull Thickness:

Front, Upper leftUpper rightLower

Sides, FrontRear

Rear, UpperLower

Top, FrontRear

FloorARMAMENT

(1) .30 caliber Browning or Marlin tank MG in front hullTraverse Range: 22 degreesElevation Range: 38 degrees

AMMUNITION2000 rounds .30 caliber (estimated)

SIGHTING AND VISION DEVICESDriver Front flap, vision slots in cupola (6), tilted cupola, pistol port (1)Gunner MG sight, pistol ports (2) 1 front, 1 rearTotal Vision Slots: (6) in cupolaTotal Pistol Ports: (3) (loopholes)

Riveted assemblyActual

0.5 inches (13mm)0.5 inches (13mm)

0.375 inches (10mm)0.5 inches (13mm)0.25 inches (6mm)



2 men129 inches160 inches64 inches64 inches57 inches14 inches

approx. 42 inches7200 pounds6200 pounds

9.4 hp/ton9.2 psi

Angle w/Vertical0 degrees38 degrees60 degrees0 degrees

22 degrees37 degrees35 degrees90 degrees60 degrees90 degrees

ENGINEMake and Model: Ford dual Model TType: 8 cylinder (4/engine), 4 cycle, vertical L-headCooling System: Liquid Ignition: MagnetoDisplacement: 353.4 cubic inchesBore and Stroke: 3.75 x 4.0 inchesCompression Ratio: 3.98:1Gross Horsepower: 34 hp at 1700 rpmFuel: Gasoline 17 gallonsEngine Oil: 8 quartsPOWER TRAINClutch: Multiple disc (2)Transmission: Ford planetary, 2 speeds forward, 1 reverseSteering: Clutch-brakeBrakes: MechanicalFinal Drive: Worm gear Gear Ratio: 7.25:1Drive Sprocket: At rear of vehicle with 10 double teeth

Diameter: 22.5 inchesRUNNING GEARSuspension: Leaf spring

12 wheels in 4 bogies (2 bogies/track)Wheel Size: 8 x 3.5 inches4 track return rollers (2/track)Idler at front of each trackIdler Size: 34 x 3.5 inches

Tracks:Type: Single pin, 7 inch width, cast steel w/integral grouser

Pitch: 7 inchesShoes per vehicle: 80 (40/track)Ground Contact Length: 56 inches, zero penetration

ELECTRICAL SYSTEMNominal Voltage: 6 volts DCGenerator: (1) 6 voltsBattery: (1) 6 voltsCOMMUNICATIONSFlag setFIRE PROTECTION

(2) 1 quart Pyrene fire extinguishersPERFORMANCEMaximum Speed: 8 miles/hourMaximum Drawbar Pull: 3650 poundsMaximum Grade: 50 per centMaximum Trench: 5 feetMaximum Vertical Wall: 20 inchesMaximum Fording Depth: 21 inchesMinimum Turning Circle: (diameter) 27 feetCruising Range: approx. 34 miles

467

LIGHT TANK T1E1 (M1)

GENERAL DATACrew:Length: Over tracksWidth:Height:Tread:Ground Clearance:Fire Height:Turret Ring Diameter: (inside)Weight, Combat Loaded:Weight, Unstowed:Power to Weight Ratio: GrossGround Pressure: Grouser penetration only

5 inch penetrationARMORType: Turret, rolled face-hardened steel; Hull, rolled face-hardened steel;



0.375 inches (10mm)0.375 inches (10mm)0.375 inches (10mm)0.25 inches (6mm)0.25 inches (6mm)

2 men152.2 inches70.5 inches85.6 inches58.3 inches

14 inches73 inches

approx. 40 inches15,671 pounds

approx. 14,500 pounds14.0 hp/ton8.9 psi5.0 psi

0.375 inches (10mm)0.375 inches (10mm)0.375 inches (10mm)0.25 inches (6mm)

Hull Thickness:Front, Driver's hood

MiddleLower

SidesRearTopFloor

Turret Thickness:FrontSidesRearTop

ARMAMENT(1) 37mm gun M1916 in combination mount Tl in turret(1) .30 caliber MG M1919 in combination mount Tl in turret

Turret Traverse: Manual, 360 degreesAMMUNITION

80 rounds 37mm3000 rounds .30 caliber

FIRE CONTROL AND VISION EQUIPMENTTelescopic sight M1918 in combination gun mount TlVision Devices:

Driver Front flaps, vision slots (3)Gunner Hatch, pistol ports (3), vision slots (3)

Total Vision Slots: Hull (3), Turret (3)Total Pistol Ports: Hull (0), Turret (3)

Angle w/Vertical13 degrees85 degrees

0 to 30 degrees0 degrees0 degrees

90 degrees90 degrees

0 degrees0 degrees0 degrees

75 to 90 degrees

ENGINEMake and Model: CunninghamType: 8 cylinder, 4 cycle, veeCooling System: Liquid Ignition: Delco, battery typeDisplacement: 441.8 cubic inchesBore and Stroke: 3.75 x 5.0 inchesGross Horsepower: (max) 110 hp at 2700 rpmGross Torque: (max) 303 ft-lb at 1200 rpmFuel: Gasoline 50 gallonsPOWER TRAINMaster Clutch: Single discTransmission: Cotta sliding gear, 3 speeds forward, 1 reverse

Gear Ratios: 1st 4.56:1 3rd 0.662:12nd 1.0:1 reverse 4.175:1

Steering: Clutch-brakeBrakes: MechanicalFinal Drive: Spur gearDrive Sprocket: At rear of vehicle with 31 double teeth

Pitch Diameter: 32 inchesRUNNING GEARSuspension: Unsprung, link type

16 wheels in 8 bogies (4 bogies/track)Wheel Size: 8.8 inch diameter over flanges4 track return rollers (2 rollers/track)Adjustable idler at front of each trackIdler Size: 30 inch diameter

Tracks:Type: Single pin, 12 inch width, open shoe cast steel with

integral grouserPitch: 6.5 inchesShoes per Vehicle: 102 (51/track)Ground Contact Length: Grouser penetration only, 72 inches

5 inch penetration, 130 inchesELECTRICAL SYSTEMNominal Voltage: 12 volts DCGenerator: (1) 12 voltsBattery: (1) 12 voltsCOMMUNICATIONFlag setFIRE PROTECTION

(2) 1 quart Pyrene fire extinguishersPERFORMANCEMaximum Speed: Level road 18 miles/hourMaximum Grade: 70 per centMaximum Trench: 6 feetMaximum Vertical Wall: 20 inchesMaximum Fording Depth: 20 inchesMinimum Turning Circle: (diameter) 20 feetCruising Range: Roads approx. 75 miles

468

LIGHT TANK M2A1

GENERAL DATACrew: 4 menLength: 163 inchesWidth: Over side stowage 94 inchesHeight: Over cupola roof 92 inchesTread: 72 inchesGround Clearance: 15 inchesFire Height: 72 inchesTürret Ring Diameter: (inside) 44.1 inchesWeight, Combat Loaded: 18,790 poundsWeight, Unstowed: approx. 17,000 poundsPower to Weight Ratio: Net 26.6 hp/ton

Gross 27.9 hp/tonGround Pressure: Zero penetration 9.4 psiARMORType: Turret, rolled face-hardened steel; Hull, rolled face-hardened steel;


0.625 inches (16mm)0.625 inches (16mm)0.625 inches (16mm)0.5 inches (13mm)0.25 inches (6mm)0.25 inches (6mm)0.25 inches (6mm)

Angle w/Vertical17 degrees69 degrees21 degrees0 degrees0 degrees




90 degrees

Hull Thickness:Front, Upper

MiddleLower

SidesRearTopFloor


ARMAMENT(1) .50 caliber MG HB M2 fixed in combination gun mount M7 in turret(1) .30 caliber MG HB M2 fixed in combination gun mount M7 in turret(1) .30 caliber MG HB M2 flexible in ball mount M8 in bow


1800 rounds .50 caliber4700 rounds .30 caliber

FIRE CONTROL AND VISION EQUIPMENTTelescopic sight M5 or M1918A2 in combination mount M7Vision Devices:

Driver Hatch, vision slots (2)Asst. Driver Hatch, vision slots (2)Commander Hatch, pistol ports (2), vision slots (6)Gunner Pistol port (1), vision slot (1)


668 cubic inches5.125 x 4.625 inches6.1:15.4:1250 hp at 2400 rpm235 hp at 2400 rpm262 hp at 2400 rpm248 hp at 2400 rpm584 ft-lb at 1800 rpm590 ft-lb at 1700 rpm565 pounds, dry50 gallons

32 quarts

Steering Ratio: 1.845:1

ENGINEMake and Model: Continental R-670-3, -3C, -5 or W-670-7, -8Type: 7 cylinder, 4 cycle, radialCooling System: Air Ignition: MagnetoDisplacement:Bore and Stroke:Compression Ratio: R-670-3, R-670-5 or W-670-7

R-670-3C or W-670-8Net Horsepower: R-670-3, R-670-5 or W-670-7

R-670-3C or W-670-8Gross Horsepower: R-670-3, R-670-5 or W-670-7

R-670-3C or W-670-8Net Torque: (max) R-670-3, R-670-5 or W-670-7Gross Torque: (max) R-670-3, R-670-5 or W-670-7Weight:Fuel: High comp. 82 octane gasoline minimum

Low comp. 75 octane gasoline minimumEngine Oil:POWER TRAINClutch: Dry disc, 2 plateTransmission: Sliding, constant mesh* 5 speeds forward, 1 reverse

Gear Ratios: 1st 5.37:1 4th 1.09:12nd 2.82:1 5th 0.738:13rd 1.72:1 reverse 6.19:1

Steering: Controlled differentialBevel Gear Ratio: 2.62:1

Brakes: Mechanical, external contractingFinal Drive: Herringbone gear Gear Ratio: 2:1Drive Sprocket: At front of vehicle with 14 teeth

Pitch Diameter: 24.56 inchesRUNNING GEARSuspension: Vertical volute spring

8 wheels in 4 bogies (2 bogies/track)Tire Size: 20 x 6 inches4 track return rollers (2 rollers/track)Adjustable idler at rear of each trackIdler Size: 24 x 6 inches

Tracks: Outside guide, rubber bushed; T16 seriesType: (T16E1) Double pin, 11.6 inch width, rubber, reversible

(T16E2) Double pin, 11.6 inch width, rubber, non-reversiblePitch: 5.5 inchesShoes per Vehicle: 124 (62/track)Ground Contact Length: 86 inches

ELECTRICAL SYSTEMNominal Voltage: 12 volts DCMain Generator: (1) 12 volts, 50 amperes, driven by main engineAuxiliary Generator: NoneBattery: (1) 12 voltsCOMMUNICATIONSRadio: SCR 193, SCR 209, or SCR 210 in rear of fighting compartmentInterphone: NoneFIRE PROTECTION

(1) 7V4 pound carbon dioxide, fixed(1) 4 pound carbon dioxide, portable

PERFORMANCEMaximum Speed: Level road 45 miles/hourMaximum Grade: 60 per centMaximum Trench: 4 feetMaximum Vertical Wall: 24 inchesMaximum Fording Depth: 43 inchesMinimum Turning Circle: (diameter) 42 feetCruising Range: Roads approx. 120 miles* Later replaced by a synchromesh transmission

469

LIGHT TANK M2A2

GENERAL DATACrew:Length:Width: Over side stowageHeight: Over cupola roofTread:Ground Clearance:Fire Height: (.50 caliber)Turret Ring Diameter: (inside 36 inch turret)

(inside 30 inch turret)Weight, Combat Loaded:Weight, UnstowedPower to Weight Ratio: Net

GrossGround Pressure: Zero penetrationARMORType: Turret, rolled face-hardened steel; Hull, rolled face-hardened steel;




35.3 inches29.5 inches

19,100 poundsapprox. 17,300 pounds

26.0 hp/ton27.3 hp/ton9.6 psi





90 degrees


MiddleLower

SidesRearTopFloor


ARMAMENT(1) .50 caliber MG HB M2 fixed in mount M9 in left turret

or(1) .30 caliber MG M1919A4 flexible in mount M9A1 in left turret(1) .30 caliber MG HB M2 flexible in ball mount M14 in right turret

or(1) .30 caliber MG M1919A4 flexible in ball mount M12 in right turret(1) .30 caliber MG HB M2 flexible in ball mount M8 in bow

or(1) .30 caliber MG M1919A4 flexible in ball mount MIO in bow

or(1) .30 caliber MG M1919A4 flexible in ball mount M13 in bow

Turret Traverse: Manual, each limited by stops to approximately 180 degreesAMMUNITION

1625 rounds .50 caliber4700 rounds .30 caliber

FIRE CONTROL AND VISION EQUIPMENTTelescopic sight M5 or M1918A2 in left turretTelescopic sight M5 or M1918A2 in right turretVision Devices:

Driver Hatch, vision slots (2)Asst. Driver Hatch, vision slots (2)Commander Hatch, pistol ports (3), vision slots (7) in left turretGunner Hatch, pistol ports (3), vision slots (6) in right turret


ENGINEMake and Model: Continental R-670-3, -3C, -5 or W-670-7, -8Type: 7 cylinder, 4 cycle, radialCooling System: Air Ignition: MagnetoDisplacement:Bore and Stroke:Compression Ratio: R-670-3, R-670-5 or W-670-7

R-670-3C or W-670-8Net Horsepower: R-670-3, R-670-5 or W-670-7

R-670-3C or W-670-8

Gross Horsepower: R-670-3, R-670-5 or W-670-7

R-670-3C or W-670-8

668 cubic inches5.125 x 4.625 inches6.1:15.4:1250 horsepowerat 2400 rpm235 horsepowerat 2400 rpm262 horsepowerat 2400 rpm248 horsepowerat 2400 rpm584 ft-lb at 1800 rpm590 ft-lb at 1700 rpm565 pounds, dry50 gallons

5th 0.738:1reverse 6.19:1


Net Torque: (max) R-670-3, R-670-5 or W-670-7Gross Torque: (max) R-670-3, R-670-5 or W-670-7Weight:Fuel: High comp. 82 octane gasoline minimum

Low comp. 75 octane gasoline minimumEngine Oil: 32 quartsPOWER TRAINClutch: Dry disc, 2 plateTransmission: Sliding, constant mesh* 5 speeds forward, 1 reverse

Gear Ratios: 1st 5.37:1 4th 1.09:12nd 2.82:13rd 1.72:1








(1) 7½ pound carbon dioxide, fixed(1) 4 pound carbon dioxide, portable


470

LIGHT TANK M2A3

GENERAL DATACrew: 4 menLength: 174.5 inchesWidth: Over stowage guard rails 98 inchesHeight: Over cupola roof 92 inchesTread: 72.3 inchesGround Clearance: 14.5 inchesFire Height: (.50 caliber) 74 inchesTurret Ring Diameter: (inside 36 inch turret) 33.2 inches

(inside 30 inch turret) 27.3 inchesWeight, Combat Loaded: 21,000 poundsWeight, Unstowed: approx. 19,000 poundsPower to Weight Ratio: Net 23.8 hp/ton



0.875 inches (22mm)0.625 inches (16mm)0.875 inches (22mm)0.625 inches (16mm)0.625 inches (16mm)0.625 inches (16mm)0.375 inches (10mm)0.5 inches (13mm)0.25 inches (6mm)


19 degrees90 degrees90 degrees90 degrees



90 degrees


MiddleLower

SidesRear, Upper

LowerTopFloor, Front

RearTurret Thickness:

FrontSidesRearTop

ARMAMENT(1) .50 caliber MG HB M2 fixed in mount M9 in left turret(1) .30 caliber MG M1919A4 flexible in ball mount M13 in right turret(1) .30 caliber MG M1919A4 flexible in ball mount M12 in bow

Turret Traverse: Manual, each limited by stops to approximately 180 degreesAMMUNITION

1579 rounds .50 caliber2370 rounds .30 caliber (4050 w/ SCR 245 or 6210 w/SCR 210A)

FIRE CONTROL AND VISION EQUIPMENTTelescopic sight M5 or M1918A2 in left turretTelescopic sight M5 or M1918A2 in right turretVision Devices:

Driver Hatch, vision slots (2)Asst. Driver Hatch, vision slots (2)Commander Hatch, pistol ports (3), vision slots (7) in left turretGunner Hatch, pistol ports (3), vision slots (4) in right turret


668 cubic inches5.125 x 4.625 inches6.1:1250 hp at 2400 rpm262 hp at 2400 rpm584 ft-lb at 1800 rpm590 ft-lb at 1700 rpm565 pounds, dry54 gallons32 quarts

5th 0.738:1reverse 6.19:1


ENGINEMake and Model: Continental W-670-9Type: 7 cylinder, 4 cycle, radialCooling System: Air Ignition: MagnetoDisplacement:Bore and Stroke:Compression Ratio:Net Horsepower: (max)Gross Horsepower: (max)Net Torque: (max)Gross Torque: (max)Weight:Fuel: 80 octane gasolineEngine Oil:POWER TRAINClutch: Dry disc, 2 plateTransmission: Constant mesh* 5 speeds forward, 1 reverse



Brakes: Mechanical, external contractingFinal Drive: Herringbone gear Gear Ratio: 2.41:1Drive Sprocket: At front of vehicle with 14 teeth





ELECTRICAL SYSTEMNominal Voltage: 12 volts DCMain Generator: (1) 12 volts, 50 amperes, belt driven by main engineAuxiliary Generator: NoneBattery: (1) 12 voltsCOMMUNICATIONSRadio: SCR 193A, SCR 210A, or SCR 245B in rear of fighting compartmentInterphone: NoneFIRE PROTECTION


PERFORMANCEMaximum Speed: Level roadMaximum Grade:Maximum Trench:Maximum Vertical Wall:Maximum Fording Depth:Minimum Turning Circle: (diameter)Cruising Range: Roads approx.* Later replaced by a synchromesh transmission

36 miles/hour60 per cent

5 feet24 inches43 inches42 feet

100 miles

471

COMBAT CAR M1 (LIGHT TANK M1A2)


47.5 inches18,790 pounds

approx. 17,000 pounds26.6 hp/ton27.9 hp/ton9.4 psi

GENERAL DATACrew:Length:Width: Over side stowageHeight: Over MG mount w/o MGTread:Ground Clearance:Fire Height:Turret Ring Diameter: (inside)Weight, Combat Loaded:Weight, Unstowed:Power to Weight Ratio: Net

GrossGround Pressure: Zero penetrationARMORType: Turret, rolled face-hardened steel; Hull, rolled face-hardened steel;

Riveted assemblyHull Thickness: Actual Angle w/Vertical

Front, Upper 0.625 inches (16mm) 17 degreesMiddle 0.625 inches (16mm) 69 degreesLower 0.625 inches (16mm) 21 degrees

Sides 0.5 inches (13mm) 0 degreesRear 0.25 inches (6mm) 0 degreesTop 0.25 inches (6mm) 90 degreesFloor 0.25 inches (6mm) 90 degrees

Türret Thickness:Front 0.625 inches (16mm) 30 degreesSides 0.625 inches (16mm) 0 degreesRear 0.625 inches (16mm) 0 degreesTop 0.25 inches (6mm) 90 degrees

ARMAMENT(1) .50 caliber MG HB M2 flexible in mount M15 in left side of turret

or(1) .30 caliber MG HB M2 flexible in mount M15 in left side of turret(1) .30 caliber MG HB M2 flexible in mount M16 in right side of turret

or(1) .30 caliber MG HB M2 flexible in mount M18 in right side of turret(1) .30 caliber MG HB M2 flexible in ball mount M8 in bow

or(1) .30 caliber MG M1919A4 flexible in ball mount MIO in bow

or(1) .30 caliber MG M1919A4 flexible in ball mount M13 in bow(1) .30 caliber MG HB M2 flexible on AA bracket mount M17 on turret

or(1) .30 caliber MG M1919A4 flexible on AA bracket mount M19 on turret

or(1) .30 caliber MG M1919A4 flexible on AA bracket mount M20 on turretProvision for (1) .45 caliber SMG M1928A1


1100 rounds .50 caliber6700 rounds .30 caliber500 rounds .45 caliber

FIRE CONTROL AND VISION EQUIPMENTTelescopic sight M5 or M1918A2 in mount M15, M16, or M18Vision Devices:

Driver Hatch, vision slots (2)Asst. Driver Hatch, vision slots (2)Commander Hatch, pistol ports (3), vision slots (0)Gunner Hatch, pistol ports (2), vision slots (0)

Total Vision Slots: Hull (4), Turret (0)Total Pistol Ports: Hull (0), Türret (5)

ENGINEMake and Model: Continental R-670-3, -3C, -5 or W-670-7, -8Type: 7 cylinder, 4 cycle, radialCooling System: Air Ignition: MagnetoDisplacement: 668 cubic inchesBore and Stroke: 5.125 x 4.625 inchesCompression Ratio: R-670-3, R-670-5 or W-670-7 6.1:1

R-670-3C or W-670-8 5.4:1Net Horsepower: R-670-3, R-670-5 or W-670-7 250 hp at 2400 rpm

R-670-3C or W-670-8 235 hp at 2400 rpmGross Horsepower: R-670-3, R-670-5 or W-670-7 262 hp at 2400 rpm

R-670-3C or W-670-8 248 hp at 2400 rpmNet Torque: (max) R-670-3, R-670-5 or W-670-7 584 ft-lb at 1800 rpmGross Torque (max) R-670-3, R-670-5 or W-670-7 590 ft-lb at 1700 rpmWeight: 565 pounds, dryFuel: High comp. 82 octane gasoline minimum 50 gallons

Low comp. 75 octane gasoline minimumEngine Oil: 32 quartsPOWER TRAINClutch: Dry disc, 2 plateTransmission: Sliding, constant mesh* 5 speeds forward, 1 reverse


Steering: Controlled differentialBevel Gear Ratio: 2.62:1 Steering Ratio: 1.845:1









472

COMBAT CAR M1A1 (LIGHT TANK M1A2)

GENERAL DATACrew: 4 menLength: 174.5 inchesWidth: Over side stowage 94 inchesHeight: Over M G mount w/o M G 89 inchesTread: 72 inchesGround Clearance: 15 inchesFire Height: 73 inchesTurret Ring Diameter: (inside) 47.5 inchesWeight, Combat Loaded: approx. 19,000 poundsWeight, Unstowed: approx. 17,000 poundsPower to Weight Ratio: Net 26.3 hp/ton









90 degrees


MiddleLower

SidesRear, Upper

LowerTopFloor


ARMAMENT(1) .50 caliber MG HB M2 flexible in mount M15 in left side of turret

or(1) .30 caliber MG HB M2 flexible in mount M15 in left side of turret(1) .30 caliber MG HB M2 flexible in mount M18 in right side of turret(1) .30 caliber MG M1919A4 flexible in ball mount M13 in bow(1) .30 caliber MG M1919A4 flexible on AA bracket mount M20 on turretProvision for (1) .45 caliber SMG M1928A1


1364 rounds .50 caliber9470 rounds .30 caliber (11,150 rounds w/SCR 245A radio)500 rounds .45 caliber

FIRE CONTROL AND VISION EQUIPMENTTelescopic sight M5 or M1918A2 in mount M15 or M18Vision Devices:

Driver Hatch, vision slots (2)Asst. Driver Hatch, vision slots (2)Commander Hatch, pistol ports (3), vision slots (2 in folding roof)Gunner Hatch, pistol ports (2), vision slots (0)

Total Vision Slots: Hull (4), Turret (2 in folding roof)Total Pistol Ports: Hull (0), Turret (5)


0.738:16.19:1


ENGINEMake and Model: Continental W-670-7Type: 7 cylinder, 4 cycle, radialCooling System: Air Ignition: MagnetoDisplacement:Bore and Stroke:Compression Ratio:Net Horsepower: (max)Gross Horsepower: (max)Net Torque: (max)Gross Torque: (max)Weight:Fuel: 80 octane gasolineEngine Oil:POWER TRAINClutch: Dry disc, 2 plateTransmission: Constant mesh* 5 speeds forward, 1 reverse

Gear Ratios: 1st 5.37:1 4th 1.09:12nd 2.82:1 5th3rd 1.72:1 reverse







ELECTRICAL SYSTEMNominal Voltage: 12 volts DCMain Generator: (1) 12 volts, 50 amperes, driven by main engineAuxiliary Generator: NoneBattery: (1) 12 voltsCOMMUNICATIONSRadio: SCR 193C, SCR 209C, or SCR 245A in rear of fighting compartmentInterphone: NoneFIRE PROTECTION



473

COMBAT CAR M2 (LIGHT TANK M1A1)

GENERAL DATACrew: 4 menLength: 172 inchesWidth: Over idler brackets 90.6 inchesHeight: Over MG mount w/o MG 95 inchesTread: 72 inchesGround Clearance: 14.5 inchesFire Height: 75 inchesTurret Ring Diameter: (inside) 47.5 inchesWeight, Combat Loaded: 25,500 poundsWeight, Unstowed: approx. 23,000 poundsPower to Weight Ratio: Net 17.3 hp/ton









90 degrees


MiddleLower

SidesRear, Upper

LowerTopFloor

Türret Thickness:FrontSidesRearTop

ARMAMENT(1) .50 caliber MG HB M2 flexible in mount M15 in left side of turret(1) .30 caliber MG HB M2 flexible in mount M18 in right side of turret(1) .30 caliber MG M1919A4 flexible in ball mount M13 in bow(1) .30 caliber MG M1919A4 flexible on AA bracket mount M20 on turretProvision for (1) .45 caliber SMG M1928A1


1364 rounds .50 caliber9470 rounds .30 caliber (11,150 rounds w/SCR 245A radio)500 rounds .45 caliber

FIRE CONTROL AND VISION EQUIPMENTTelescopic sight M5 or M1918A2 in mount M15 or M18Vision Devices:

Driver Hatch, vision slots (2)Asst. Driver Hatch, vision slots (2)Commander Hatch, pistol ports (2), vision slots (0)Gunner Hatch, pistol ports (2), vision slots (0)


5threverse


0.738:16.19:1


ENGINEMake and Model: Guiberson T-1020-4Type: 9 cylinder, 4 cycle, radialCooling System: Air Ignition: CompressionDisplacement:Bore and Stroke:Compression Ratio:Net Horsepower: (max)Gross Horsepower: (max)Net Torque: (max)Gross Torque: (max)Weight:Fuel: 40 cetane diesel oilEngine Oil:POWER TRAINClutch: Dry disc, 2 plateTransmission: Synchromesh, 5 speeds forward, 1 reverse





8 wheels in 4 bogies (2 bogies/track)Tire Size: 20 x 6 inches6 track return rollers (3 rollers/track)Trailing adjustable idler w/volute spring at rear of each trackIdler Size: 30 x 6 inches



ELECTRICAL SYSTEMNominal Voltage: 12 volts DCMain Generator: (1) 12 volts, 50 amperes, belt driven by main engineAuxiliary Generator: NoneBattery: (1) 12 voltsCOMMUNICATIONSRadio: SCR 193C, SCR 209C, or SCR 245A in rear of fighting compartmentInterphone: NoneFIRE PROTECTION


PERFORMANCEMaximum Speed: Level road, governed 36 miles/hourMaximum Grade: 60 per centMaximum Trench: 6 feetMaximum Fording Depth: 52 inchesMinimum Turning Circle: (diameter) 42 feetCruising Range: Roads approx. 200 miles

474

LIGHT TANK M2A4

GENERAL DATACrew: 4 menLength: 174.5 inchesWidth: 97.25 inchesHeight:Over MG mount 104 inchesTread: 73.0 inchesGround Clearance: 16.5 inchesFire Height: 76 inchesTurret Ring Diameter: (inside) 46.75 inchesWeight, Combat Loaded: 25,600 poundsWeight, Unstowed: 23,500 poundsPower to Weight Ratio: Net 19.5 hp/ton








MiddleLower

SidesRear, Upper


RearTürret Thickness:

Gun Shield 1.0 inches (25mm) 0 to 14 degreesFront 1.0 inches (25mm) 10 degreesSides 1.0 inches (25mm) 0 degreesRear 1.0 inches (25mm) 0 degreesTop 0.25 inches (6mm) 75 to 90 degrees

ARMAMENTPrimary: 37mm Gun M5 in Mount M20 (T12) in turret

Traverse: Manual, 20 degrees in mount 360 degreesElevation: Manual +19 to —6 degreesFiring Rate: (max) 30 rounds/minuteLoading System: ManualStabilizer System: None

Secondary:(1) .30 caliber MG M1919A4 flexible M20 AA mount on turret(1) .30 caliber MG M1919A4 coaxial w/37mm gun in turret(1) .30 caliber MG M1919A4 in bow mount(2) .30 caliber MG M1919A4 fixed, one in each sponsonProvision for (1) .45 caliber SMG M1928A1

AMMUNITION103 rounds 37mm500 rounds .45 caliber8470 rounds .30 caliber

FIRE CONTROL AND VISION EQUIPMENTPrimary Weapon: Telescope M5A1Vision Devices:

Driver Hatch, vision slots (2)Asst. Driver Hatch, vision slots (2)Commander Hatch, pistol ports (5), vision slots (6)Gunner Pistol ports (2)

Total Vision Slots: Hull (4), Turret (6) in cupolaTotal Pistol Ports: Hull (0), Turret (7)


ENGINEMake and Model: Continental W-670-9AType: 7 cylinder, 4 cycle, radialCooling System: Air Ignition: MagnetoDisplacement:Bore and Stroke:Compression Ratio:Net Horsepower: (max)Gross Horsepower: (max)Net Torque: (max)Gross Torque: (max)Weight:Fuel: 80 octane gasolineEngine Oil:POWER TRAINClutch: Dry disc, 2 plateTransmission: Synchromesh, 5 speeds forward, 1 reverse








ELECTRICAL SYSTEMNominal Voltage: 12 volts DCMain Generator: (1) 12 volts, 50 amperes, belt driven by main engineAuxiliary Generator: NoneBattery: (1) 12 voltsCOMMUNICATIONSRadio: SCR 210 in right sponson;

SCR 245* (command tanks only) in left sponsonInterphone: RC61, 4 stations* Early vehicles may be equipped with the SCR 193

FIRE PROTECTION(1) 7½ pound carbon dioxide, fixed(1) 4 pound carbon dioxide, portable

PERFORMANCEMaximum Speed: Level road, governedMaximum Grade:Maximum Trench:Maximum Vertical Wall:Maximum Fording Depth:Minimum Turning Circle: (diameter)Cruising Range: Roads


5 feet24 inches36 inches42 feet

approx. 70 miles

475

LIGHT TANK M3 (early production)

GENERAL DATACrew: 4 menLength: 178.4 inchesWidth: 88.0 inchesHeight: Over MG mount 104 inchesTread: 73.0 inchesGround Clearance: 16.5 inchesFire Height: 76 inchesTurret Ring Diameter: (inside) 46.75 inchesWeight, Combat Loaded: 28,000 poundsWeight, Unstowed: 25,600 poundsPower to Weight Ratio: Net 17.9 hp/ton


Riveted and welded assemblyActual


0.375 inches (10mm)


59 degrees0 degrees


0 to 14 degrees10 degrees0 degrees0 degrees

75 to 90 degrees


MiddleLower (cast)

SidesRear, Upper

MiddleLower

TopFloor, Front


Gun Shield 1.5 inches (38mm)Front 1.5 inches (38mm)Sides 1.0 inches (25mm)Rear 1.0 inches (25mm)Top 0.5 inches (13mm)

ARMAMENTPrimary: 37mm Gun M5 in Mount M22 in turret

Traverse: Manual, 20 degrees in mount 360 degreesElevation: Manual +20 to —10 degreesFiring Rate: (max) 30 rounds/minuteLoading System: ManualStabilizer System: Elevation only


AMMUNITION103 rounds 37mm 12 hand grenades500 rounds .45 caliber8270 rounds .30 caliber

FIRE CONTROL AND VISION EQUIPMENTPrimary Weapon: Telescope M5A1Vision Devices:

Driver Hatch, vision slots (2)Asst. Driver Hatch, vision slots (2)Commander Hatch, pistol ports (2), vision slots (6)Gunner Pistol port (1)

Total Vision Slots: Hull (4), Turret (6) in cupolaTotal Pistol Ports: Hull (0), Turret (3)


5th 0.738:1reverse 6.19:1









(T16E2) Double pin, 11.6 inch width, rubber non-reversiblePitch: 5.5 inchesShoes per Vehicle: 132 (66/track)Ground Contact Length: 117 inches

ELECTRICAL SYSTEMNominal Voltage: 12 volts DCMain Generator: (1) 12 volts, 50 amperes, belt driven by main engineAuxiliary Generator: NoneBattery: (1) 12 voltsCOMMUNICATIONSRadio: SCR 210 in right sponson; SCR 245* (command tanks only) in left sponsonInterphone: RC61, 4 stations* Early vehicles may be equipped with the SCR 193


PERFORMANCEMaximum Speed: Level road, governedMaximum Grade:Maximum Trench:Maximum Vertical Wall:Maximum Fording Depth:Minimum Turning Circle: (diameter)Cruising Range: Roads approx.


6 feet24 inches36 inches42 feet70 miles

476

LIGHT TANK M3, Diesel (mid-production)


Gross 17.5 hp/tonGround Pressure: Zero penetration 10.3 psiARMORType: Turret, rolled homogeneous steel; Hull, rolled face-hardened steel;

Riveted and welded assemblyActual


0.375 inches (10mm)




59 degrees0 degrees



75 to 90 degrees


MiddleLower (cast)

SidesRear, Upper

MiddleLower

TopFloor, Front


Gun ShieldFrontSidesRearTop


Traverse: Manual, 20 degrees in mount 360 degreesElevation: Manual +20 to —10 degreesFiring Rate: (max) 30 rounds/minuteLoading System: ManualStabilizer System: Elevation only



FIRE CONTROL AND VISION EQUIPMENTPrimary Weapon: Telescope M5A1Vision Devices: Direct

Driver Hatch, vision slots (2)Asst. Driver Hatch, vision slots (2)Commander Hatch, pistol ports (2),

vision slots (4) in cupolaGunner Pistol port (1)

Total Protectoscopes: Hull (2), Turret (3)Total Vision Slots: Hull (4), Turret (4) in cupolaTotal Pistol Ports: Hull (0), Turret (3)

IndirectProtectoscope (1)Protectoscope (1)Protectoscopes (2)

Protectoscope (1)

1021 cubic inches5.125 x 5.5 inches14.5:1220 hp at 2200 rpm245 hp at 2200 rpm580 ft-lb at 1400 rpm645 ft-lb at 1300 rpm730 pounds, dry

54 gallons32 quarts

5th 0.738:1reverse 6.19:1


ENGINEMake and Model: Guiberson T-1020-4Type: 9 cylinder, 4 cycle, radialCooling System: Air Ignition: CompressionDisplacement:Bore and Stroke:Compression Ratio:Net Horsepower (max):Gross Horsepower (max):Net Torque (max):Gross Torque (max):Weight:Fuel: 40 cetane diesel oilEngine Oil:POWER TRAINClutch: Dry disc, 2 plateTransmission: Synchromesh, 5 speeds forward, 1 reverse





8 wheels in 4 bogies (2 bogies/track)Tire Size: 20 x 6 inches6 track return rollers (3/track)Trailing adjustable idler w/volute spring at rear of each trackIdler Size: 30 x 6 inches



ELECTRICAL SYSTEMNominal Voltage: 12 volts DCMain Generator: (1) 12 volts, 50 amperes, belt driven by main engineAuxiliary Generator: NoneBattery: (1) 12 voltsCOMMUNICATIONSRadio: SCR 210 in right sponson; SCR 245* (command tanks only) in left sponsonInterphone: RC61, 4 stations* Early vehicles may be equipped with the SCR 193


PERFORMANCEMaximum Speed: Level road, governed 36 miles/hourMaximum Grade: 60 per centMaximum Trench: 6 feetMaximum Vertical Wall: 24 inchesMaximum Fording Depth: 36 inchesMinimum Turning Circle: (diameter) 42 feetCruising Range: Roads approx. 90 miles

477

LIGHT TANK M3 (late production)

GENERAL DATACrew: 4 menLength: 178.4 inchesWidth: 88.0 inchesHeight: Over MO mount* 94 inchesTread: 73.0 inchesGround Clearance: 16.5 inchesFire Height: 76 inchesTurret Ring Diameter: (inside) 46.75 inchesWeight, Combat Loaded: 28,000 poundsWeight, Unstowed: 25,600 poundsPower to Weight Ratio: Net 17.9 hp/ton

Gross 18.7 hp/tonGround Pressure: Zero penetration 10.3 psiARMORType: Turret, rolled homogeneous steel; Hull, rolled face-hardened steel;

Welded and riveted assemblyHull Thickness: Actual Angle w/Vertical

Front, Upper 1.5 inches (38mm) 17 degreesMiddle 0.625 inches (16mm) 69 degreesLower (cast) 1.75 inches (44mm) 23 degrees

Sides 1.0 inches (25mm) 0 degreesRear, Upper 1.0 inches (25mm) 59 degrees

Middle 1.0 inches (25mm) 0 degreesLower 1.0 inches (25mm) 20 degrees

Top 0.5 inches (13mm) 90 degreesFloor, Front 0.5 inches (13mm) 90 degrees

Rear 0.375 inches (10mm) 90 degreesTurret Thickness:

Gun Shield 2.0 inches (51mm) 0 to 14 degreesFront 1.5 inches (38mm) 10 degreesSides 1.25 inches (32mm) 0 degreesRear 1.25 inches (32mm) 0 degreesTop 0.5 inches (13mm) 75 to 90 degrees

ARMAMENTPrimary: 37mm Gun M6 in Mount M23 in turret*

Traverse: Manual, 20 degrees in mount 360 degreesElevation: Manual +20 to -10 degreesFiring Rate: (max) 30 rounds/minuteLoading System: ManualStabilizer System: Elevation only



FIRE CONTROL AND VISION EQUIPMENTPrimary Weapon: Periscope M4 with Telescope M40Vision Devices: Direct Indirect

Driver Hatch, vision slots (2) Protectoscope (1)Asst. Driver Hatch, vision slots (2) Protectoscope (1)Commander Hatch, pistol ports (2) Periscopes M6 (1)

Protectoscopes (2)Gunner Pistol Port (1) Periscope M4 (1)

Protectoscope (1)Total Periscopes: Hull (0), Turret M4 (1), M6 (1)Total Protectoscopes: Hull (2), Turret (3)Total Vision Slots: Hull (4), Turret (0)Total Pistol Ports: Hull (0), Turret (3)* Fitted W/M3A1 turret w/o basket and w/o the power traverse.

668 cubic inches5.125 x 4.625 inches6.1:1250 hp at 2400 rpm262 hp at 2400 rpm584 ft-lb at 1800 rpm590 ft-lb at 1700 rpm565 pounds, dry54 gallons104 gallons32 quarts

ENGINEMake and Model: Continental W-670-9AType: 7 cylinder, 4 cycle, radialCooling System: Air Ignition: MagnetoDisplacement:Bore and Stroke:Compression Ratio:Net Horsepower: (max)Gross Horsepower: (max)Net Torque: (max)Gross Torque: (max)Weight:Fuel: 80 octane gasoline

With two 25 gallon jettison tanksEngine Oil:POWER TRAINClutch: Dry disc, 2 plateTransmission: Synchromesh, 5 speeds forward, 1 reverse






Tracks: Outside guide, rubber bushed; T16 series, T36E6, and T55E1Type: (T16E1) Double pin, 11.6 inch width, rubber, reversible

(T16E2) Double pin, 11.6 inch width, rubber, non-reversible(T36E6) Double pin, 11.6 inch width, steel, parallel grouser(T55E1) Double pin, 11.6 inch width, steel, chevron

Pitch: 5.5 inchesShoes per Vehicle: 132 (66/track)Ground Contact Length: 117 inches

ELECTRICAL SYSTEMNominal Voltage: 12 volts DCMain Generator: (1) 12 volts, 50 amperes, belt driven by main engineAuxiliary Generator: NoneBattery: (1) 12 voltsCOMMUNICATIONSRadio: SCR 210 in right sponson; SCR 245 (command tanks only) in left sponsonInterphone: RC61, 4 stationsFIRE PROTECTION



w/two 25 gallon jettison tanks approx. 135 miles

478

LIGHT TANK M3A1


Gross 18.4 hp/tonGround Pressure: Zero penetration 10.5 psiARMORType: Turret, rolled homogeneous steel; Hull, rolled face-hardened and

homogeneous steel; Riveted and welded assemblyActual


0.375 inches (10mm)



59 degrees0 degrees



75 to 90 degrees


MiddleLower (cast)

SidesRear, Upper

MiddleLower

TopFloor, Front


Gun Shield (cast)FrontSidesRearTop


Traverse: Hydraulic and manual 360 degreesTraverse Rate: (max) 15 seconds/360 degreesElevation: Manual +20 to -10 degreesFiring Rate: (max) 30 rounds/minuteLoading System: ManualStabilizer System: Elevation only

Secondary:(1) .30 caliber MG M1919A4 flexible AA mount on turret(1) .30 caliber MG M1919A5 coaxial w/37mm gun in turret(1) .30 caliber MG M1919A4 in bow mountProvision for (1) .45 caliber SMG M1928A1


FIRE CONTROL AND VISION EQUIPMENTPrimary Weapon: Periscope M4 with Telescope M40Vision Devices: Direct

Driver Hatch, vision slots (2)Asst. Driver Hatch, vision slots (2)Commander Hatch, pistol ports (2)

Gunner Pistol Port (1)

Total Periscopes: M4 (1), M6 (1)Total Protectoscopes: Hull (2), Turret (3)Total Vision Slots: Hull (4), Turret (0)Total Pistol Ports: Hull (0), Turret (3)

IndirectProtectoscopes (1)Protectoscopes (1)Periscopes M6 (1),Protectoscopes (2)Periscope M4 (1)Protectoscope (1)

668 cubic inches5.125 x 4.625 inches6.1:1250 hp at 2400 rpm262 hp at 2400 rpm584 ft-lb at 1800 rpm590 ft-lb at 1700 rpm565 pounds, dry54 gallons104 gallons32 quarts

0.738:16.19:1


ENGINEMake and Model: Continental W-670-9AType: 7 cylinder, 4 cycle, radialCooling System: Air Ignition: MagnetoDisplacement:Bore and Stroke:Compression Ratio:Net Horsepower: (max)Gross Horsepower: (max)Net Torque: (max)Gross Torque: (max)Weight:Fuel: 80 octane gasoline

With two 25 gallon jettison tanksEngine Oil:POWER TRAINClutch: Dry disc, 2 plateTransmission: Synchromesh, 5 speeds forward, 1 reverse

Gear Ratios: 1st 5.37:1 4th 1.09:12nd 2.82:1 5th3rd 1.72:1 reverse





Tracks: Outside guide, rubber bushed; T16 series, T36E6, and T55E1Type: (T16E1) Double pin, 11.6 inch width, rubber reversible



ELECTRICAL SYSTEMNominal Voltage: 12 volts DCMain Generator: (1) 12 volts, 50 amperes, belt driven by main engineAuxiliary Generator: (1) 12 volts, 50 amperes, driven by the auxiliary engineBattery: (1) 12 voltsCOMMUNICATIONSRadio: SCR 508 in left sponson; SCR 506 (command tanks only) in

right sponsonInterphone: (part of radio) 4 stationsFIRE PROTECTION

(1) 10 pound carbon dioxide, fixed(1) 4 pound carbon dioxide, portable

PERFORMANCEMaximum Speed: Level road, governedMaximum Grade:Maximum Trench:Maximum Vertical Wall:Maximum Fording Depth:Minimum Turning Circle: (diameter)Cruising Range: Roads approx.

w/two 25 gallon jettison tanks approx.


6 feet24 inches36 inches42 feet70 miles

135 miles

479

LIGHT TANK M3A3

GENERAL DATACrew: 4 menLength: With rear stowage box 197.9 inchesWidth: Over sandshields 99.4 inchesHeight: Over MG mount 101 inchesTread: 73.0 inchesGround Clearance: 16.5 inchesFire Height: 76 inchesTurret Ring Diameter: (inside) 46.75 inchesWeight, Combat Loaded: 32,400 poundsWeight, Unstowed: 28,000 poundsPower to Weight Ratio: Net 15.4 hp/ton

Gross 16.2 hp/tonGround Pressure: Zero penetration 11.9 psiARMORType: Turret, rolled homogeneous steel; Hull, rolled homogeneous steel;

Welded assemblyActual


0.375 inches (10mm)


59 degrees0 degrees




75 to 90 degrees


Lower (cast)Sides, Upper

LowerRear, Upper

MiddleLower

TopFloor, Front





Secondary:(1) .30 caliber MG M1919A4 flexible AA mount on turret(1) .30 caliber MG M1919A5 coaxial w/37mm gun in turret(1) .30 caliber MG M1919A4 in bow mountProvision for (1) .45 caliber SMG M1928A1AMMUNITION174 rounds 37mm*540 rounds .45 caliber7500 rounds .30 caliber* 144 37mm rounds in command tanks

FIRE CONTROL AND VISION EQUIPMENTPrimary Weapon: Telescope M54

Periscope M4 with Telescope M40Vision Devices: Direct

Driver Hatch, peephole (1)Asst. Driver Hatch, peephole (1)Commander HatchGunner Hatch

Total Periscopes: M4 (1), M6 (4)

12 hand grenades

IndirectPeriscope M6 (1)Periscope M6 (1)Periscope M6 (2)Periscope M4 (1)












ELECTRICAL SYSTEMNominal Voltage: 12 volts DCMain Generator: (1) 12 volts, 50 amperes, belt driven by main engineAuxiliary Generator: (1) 12 volts, 50 amperes, driven by the auxiliary engineBattery: (1) 12 voltsCOMMUNICATIONSRadio: SCR 508, 528, or 538 in rear of turret; SCR 506 in right sponson

(command tanks only)Interphone: (part of radio) 4 stationsFlag Set M238, spotlight, sirenFlares: 3 each M17 and M18, (command tanks only)Ground Signals Projector M4 (command tanks only)FIRE AND GAS PROTECTION

(1) 10 pound carbon dioxide, fixed(1) 4 pound carbon dioxide, portable(1) 1½ quart decontaminating apparatus


480

LIGHT TANK M5

GENERAL DATACrew: 4 menLength: Gun forward, w/o sandshields 174.8 inchesLength: Gun to rear, w/o sandshields 170.8 inchesLength: w/o gun, w/o sandshields 170.8 inchesGun Overhang: Gun forward, w/o sandshields 4.0 inchesWidth: w/o sandshields 88.3 inchesHeight: Over M G mount 102 inchesTread: 88.3 inchesGround Clearance: 16.5 inchesFire Height: 77.4 inchesTurret Ring Diameter: (inside) 46.75 inchesWeight, Combat Loaded: W/T16E1 tracks 33,100 poundsWeight, Unstowed: W/T16E1 tracks 30,800 poundsPower to Weight Ratio: Net 13.3 hp/ton



1.125 inches (29mm)1.75 inches (44mm)1.0 inches (25mm)1.0 inches (25mm)1.0 inches (25mm)1.0 inches (25mm)0.5 inches (13mm)0.5 inches (13mm)

0.375 inches (10mm)







75 to 90 degrees


Lower (cast)SidesRear, Upper

MiddleLower

TopFloor, Front




Traverse: Hydraulic and manual 360 degreesTraverse Rate: (max) 15 seconds/360 degreesElevation: Manual +20 to —10 degreesFiring Rate: (max) 30 rounds/minuteLoading System: ManualStabilizer System: Elevation only



FIRE CONTROL AND VISION EQUIPMENTPrimary Weapon: Periscope M4 with Telescope M40Vision Devices: Direct

Driver Hatch, peephole (1)Asst. Driver Hatch, peephole (1)Commander Hatch, pistol ports (2)

Gunner Hatch, pistol port (1)

Total Periscopes: M4 (1), M6 (3)Total Protectoscopes: (3)Total Pistol Ports: Hull (0), Turret (3)

IndirectPeriscope M6 (1)Periscope M6 (1)Periscope M6 (1)Protectoscopes (2)Periscope M4 (1)Protectoscope (1)

ENGINEMake and Model: Twin Cadillac, Series 42Type: 16 cylinder (8/engine), 4 cycle, 90 degree veeCooling System: Liquid Ignition: DelcoDisplacement:

Bore and Stroke:Compression Ratio:Net Horsepower: (max)

Gross Horsepower: (max)

Net Torque : (max)

Gross Torque: (max)

Weight:

Fuel: 80 octane gasolineEngine Oil:POWER TRAINTransmission: Hydramatic (2), 4 speeds forward, 1 reverse

692 cubic inches(346 cubic inches/engine)3.5 x 4.5 inches7.06:1220 hp at 3400 rpm(110 hp/engine)296 hp at 3200 rpm(148 hp/engine)488 ft-lb at 1200 rpm(244 ft-lb/engine)560 ft-lb at 1200 rpm(280 ft-lb/engine)1168 pounds, dry(584 pounds/engine)89 gallons16 quarts (8 quarts/engine)

Gear Ratios: 4threverse

1.00:13.81:1

1st 3.26:12nd 2.26:13rd 1.44:1

Transfer Unit: Hydraulic, 2 speedsGear Ratios: 2.37:1 and 1.00:1








ELECTRICAL SYSTEMNominal Voltage: 12 volts DCMain Generator: (2, 1/engine) 12 volts, 50 amperes (25 amperes/generator),

belt driven by each engineAuxiliary Generator: 12 volts, 50 amperes, driven by the auxiliary engineBattery: (1) 12 voltsCOMMUNICATIONSRadio: SCR 508, 528, or 538 in left sponson; SCR 506 in right sponson

(command tanks only)Interphone: (part of radio) 4 stationsFlag Set M238, spotlight, sirenFlares: 3 each M17 and M18 (command tanks only)Ground Signals Projector M4 (command tanks only)FIRE AND GAS PROTECTION

(1) 10 pound carbon dioxide, fixed(1) 4 pound carbon dioxide, portable(1) l½ quart decontaminating apparatus

PERFORMANCEMaximum Speed: Level roadMaximum Grade:Maximum Trench:Maximum Vertical Wall:Maximum Fording Depth:Minimum Turning Circle: (diameter)

36 miles/hour60 per cent5.3 feet18 inches36 inches42 feet

Cruising Range: Roads approx. 100 miles

481

LIGHT TANK M5A1 (late production)

GENERAL DATACrew: 4 menLength: Gun forward, w/sandshields & stowage box 190.5 inchesLength: Gun to rear, w/sandshields & stowage box 190.5 inchesLength: w/o gun, w/sandshields & stowage box 190.5 inchesGun Overhang: w/sandshields & stowage box 0 inchesWidth: Over sandshields 90 inchesHeight: Over MG mount 101 inchesTread: 73.3 inchesGround Clearance: 16.5 inchesFire Height: 77.4 inchesTurret Ring Diameter: (inside) 46.75 inchesWeight, Combat Loaded: w/rubber tracks 33,500 pounds

w/steel tracks 34,700 poundsWeight, Unstowed: w/rubber tracks 31,100 pounds

w/steel tracks 32,300 poundsPower to Weight Ratio: Net, w/rubber tracks 13.1 hp/ton

w/steel tracks 12.7 hp/tonGross, w/rubber tracks 17.7 hp/ton

w/steel tracks 17.1 hp/tonGround Pressure: Zero penetration, w/rubber tracks 12.3 psi

w/steel tracks 12.8 psiARMORType: Turret, rolled homogeneous steel; Hull, rolled homogeneous steel;

Welded assemblyHull Thickness: Actual Angle w/Vertical

Front, Upper 1.125 inches (29mm) 48 degreesLower (cast) 1.5-2.5 inches

(38-64mm) 0 to 23 degreesSides, Front 1.125 inches (29mm) 0 degrees

Rear 1.0 inches (15mm) 0 degreesRear, Upper 1.0 inches (25mm) 49 degrees

Middle 1.0 inches (25mm) 0 degreesLower 1.0 inches (25mm) 17 degrees

Top 0.5 inches (13mm) 90 degreesFloor, Front 0.5 inches (13mm) 90 degrees


Gun Shield (cast) 2.0 inches (51mm) 0 to 14 degreesFront 1.75 inches (44mm) 10 degreesSides 1.25 inches (32mm) 0 degreesRear 1.25 inches (32mm) 0 degreesTop 0.5 inches (13mm) 75 to 90 degrees



Secondary:(1) .30 caliber MG M1919A4 flexible AA mount on turret(1) .30 caliber MG M1919A5 coaxial w/37mm gun in turret(1) .30 caliber MG M1919A4 in bow mountProvision for (4) .45 caliber SMG M3


FIRE CONTROL AND VISION EQUIPMENTPrimary Weapon: Telescope M70D

Periscope M4A1 with Telescope M40Vision Devices: Direct Indirect

Driver Hatch, peephole (1) Periscope M6 (1)Asst. Driver Hatch, peephole (1) Periscope M6 (1)Commander Hatch Periscope M6 (2)Gunner Hatch Periscope M4A1 (1)

Total Periscopes: M4A1 (1), M6 (4)

ENGINEMake and Model: Twin Cadillac, Series 42Type: 16 cylinder (8/engine), 4 cycle, 90 degree veeCooling System: Liquid Ignition: DelcoDisplacement: 692 cubic inches

(346 cubic inches/engine)Bore and Stroke: 3.5 x 4.5 inchesCompression Ratio: 7.06:1Net Horsepower: (max) 220 hp at 3400 rpm

(110 hp/engine)Gross Horsepower: (max) 296 hp at 3200 rpm

(148 hp/engine)Net Torque: (max) 488 ft-lb at 1200 rpm

(244 ft-lb/engine)Gross Torque: (max) 560 ft-lb at 1200 rpm

(280 ft-lb/engine)Weight: 1168 pounds, dry

(584 pounds/engine)Fuel: 80 octane gasoline 89 gallonsEngine Oil: 16 quarts (8 quarts/engine)POWER TRAINTransmission: Hydramatic (2), 4 speeds forward, 1 reverse










ELECTRICAL SYSTEMNominal Voltage: 12 volts DCMain Generator: (2, I/engine) 12 volts, 50 amperes (25 amperes/generator),

belt driven by each engineAuxiliary Generator: 12 volts, 50 amperes, driven by the auxiliary engineBattery: (1) 12 voltsCOMMUNICATIONSRadio: SCR 508, 528, or 538 in rear of turret; SCR 506 in right sponson

(command tanks only)Interphone: (part of radio) 4 stationsFlag Set M238, spotlight, sirenFlares: 3 each M17 and M18 (command tanks only)Ground Signals Projector M4 (command tanks only)FIRE AND GAS PROTECTION


PERFORMANCEMaximum Speed: Level road 36 miles/hourMaximum Grade: 60 per centMaximum Trench: 5.3 ¡feetMaximum Vertical Wall: 18 inchesMaximum Fording Depth: 36 inchesMinimum Turning Circle: (diameter) 42 feetCruising Range: Roads approx. 100 miles

482

LIGHT TANK T7E5 (MEDIUM TANK M7, PILOT)

GENERAL DATACrew: 5 menLength: Gun forward, w/o fenders 210 inchesLength: Gun to rear, w/o fenders 206 inchesLength: w/o gun, w/o fenders 206 inchesGun Overhang: Gun forward, w/o fenders 4 inchesWidth: 112 inchesHeight: 93 inchesTread: 91.5 inchesGround Clearance: 16 inchesFire Height: 77 inchesTurret Ring Diameter: (inside) 64 inchesWeight, Combat Loaded: 53,950 poundsWeight, Unstowed: 50,000 poundsPower to Weight Ratio: Net 13.0 hp/ton

Gross 14.8 hp/tonGround Pressure: Zero penetration 10.7 psiARMORType: Turret, cast homogeneous steel; Hull, cast homogeneous steel;




0 to 50 degrees0 degrees0 degrees19 degrees90 degrees90 degrees90 degrees


LowerSides, Upper

LowerRear, Upper



Gun Shield (cast) 2.5 inches (64mm) 0 degreesFront 2.0 inches (51mm) 23 degreesSides, Left 1.5 inches (38mm) 21 degrees

Right 1.5 inches (38mm) 24 degreesRear 1.5 inches (38mm) 11 degreesTop 0.75 inches (19mm) 90 degrees





FIRE CONTROL AND VISION EQUIPMENTPrimary Weapon:

HatchHatch

Vision DevicesDriverAsst. DriverCommanderGunnerLoader

Total Periscopes: M4 (1), M6 (5)Total Vision Slots: Hull (2), Turret (0)

DirectTelescope M55

Periscope M4 withTelescope M38

Directvision slot (1)vision slot (1)HatchNoneHatch

IndirectAzimuth Indicator M19Gunner's Quadrant MlElevation Quadrant M9

IndirectPeriscope M6 (1)Periscope M6 (1)Periscope M6 (2)Periscope M4 (1)Periscope M6 (1)

973 cubic inches5 x 5.5 inches5.7:1350 hp at 2400 rpm400 hp at 2400 rpm800 ft-lb at 1800 rpm890 ft-lb at 1800 rpm1137 pounds, dry138 gallons36 quarts

ENGINEMake and Model: Continental R-975-C1Type: 9 cylinder, 4 cycle, radialCooling System: Air Ignition: MagnetoDisplacement:Bore and Stroke:Compression Ratio:Net Horsepower: (max)Gross Horsepower: (max)Net Torque: (max)Gross Torque: (max)Weight:Fuel: 80 octane gasolineEngine Oil:POWER TRAINTransfer Case: Spicer, fixed ratio

Gear Ratio: 1.05:1Transmission: Spicer automatic, 3 speeds forward, 1 reverse

Torque Convenor Ratio: 8.35:1 (max)Gear Ratios: 1st 10.42:1 3rd 1:1

2nd 2.085:1Steering: Controlled differential

Bevel Gear Ratio: 2.1:1Brakes: Mechanical, external contractingFinal Drive: Herringbone gear Gear Ratio: 2.685:1Drive Sprocket: At front of vehicle with 13 teeth


8 wheels in 4 bogies (2 bogies/track)Tire Size: 20 x 9 inches6 track support rollers (3 rollers/track)Trailing adjustable idler w/volute spring at rear of each trackIdler Size: 30 x 9 inches

Tracks: Outside guide, rubber bushed; T48Type: Double pin, 16.56 inch width, rubber chevronPitch: 6 inchesShoes per Vehicle: 142 (71/track)Ground Contact Length: 152.5 inches

ELECTRICAL SYSTEMNominal Voltage: 24 volts DCMain Generator: (1) 24 volts, 50 amperes, driven by power take-off from

main engineAuxiliary Generator: (1) 30 volts, 50 amperes, driven by auxiliary engineBattery: (2) 12 volts in seriesCOMMUNICATIONSRadio: SCR 508, 528, or 538 in rear of turret; SCR 506 (command tanks

only) in right sponsonInterphone: (part of radio) 5 stationsFlag Set M238, Panel Set AP50A, spotlight, sirenFlares: 3 each, M17, M18, M19, and M21 (command tanks only)Ground Signals Projector M4 (command tanks only)FIRE AND GAS PROTECTION


PERFORMANCEMaximum Speed: Level road 30 miles/hourMaximum Grade: 50 per centMaximum Trench: 6.5 feetMaximum Vertical Wall: 24 inchesMaximum Fording Depth: 36 inchesMinimum Turning Circle: (diameter) 64 feetCruising Range: Roads approx. 100 miles

483

LIGHT TANK M22 (T9E1)

GENERAL DATACrew: 3 menLength: Gun forward 156 inchesLength: Gun to rear 155 inchesLength: w/o gun 155 inchesGun Overhang: Gun forward 1 inchWidth: 88.5 inchesHeight: 72.5 inchesTread: 70.3 inchesGround Clearance: 10 inchesFire Height: 58 inchesTurret Ring Diameter: (inside) 47.45 inchesWeight, Combat Loaded: 16,400 poundsWeight, Unstowed: 14,600 poundsPower to Weight Ratio: Net 19.8 hp/ton

Gross 23.4 hp/tonGround Pressure: Zero penetration 7.1 psiARMORType: Turret, cast homogeneous steel; Hull, rolled homogeneous steel;

Welded assemblyActual Angle w/Vertical

0.5 inches (13mm) 65 degrees1.0 inches (25mm) 0 degrees1.0 inches (25mm) 0 degrees

0.375 inches (10mm) 45 degrees0.5 inches (13mm) 0 degrees0.5 inches (13mm) 9 degrees

0.375 inches (10mm) 90 degrees0.5 inches (13mm) 90 degrees


Driver head coverLower

Sides, UpperLower

RearTopFloor

Turret Thickness:Gun ShieldFrontSidesRearTop

1.0 inches (25mm) 50 degrees1.0 inches (25mm) 30 degrees1.0 inches (25mm) 5 degrees1.0 inches (25mm) 0 degrees0.375-0.75 inches

(10-19mm) 90 degreesARMAMENTPrimary: 37mm Gun M6 in Mount M53 (T55) in turret

Traverse: Manual 360 degreesElevation: Manual +30 to —10 degreesFiring Rate: (max) 30 rounds/minuteLoading System: ManualStabilizer System: None

Secondary:(1) .30 caliber MG M1919A4 coaxial w/37mm gun in turretProvision for (3) .45 caliber SMG M3


FIRE CONTROL AND VISION EQUIPMENTPrimary Weapon: Periscope M8 with Telescope M46Vision Devices: Direct Indirect

Driver Head cover, peephole (1) Periscope M6 (1)Commander Hatch Periscope M6 (2)Gunner Hatch Periscope M8 (1)


434.0 cubic inches4.875 x 3.875 inches6.25:1162 hp at 2800 rpm192 hp at 2800 rpm332 ft-lb at 2100 rpm360 ft-lb at 2100 rpm1000 pounds, dry57 gallons12 quarts

ENGINEMake and Model: Lycoming 0-435TType: 6 cylinder, 4 cycle, opposedCooling System: Air Ignition: DelcoDisplacement:Bore and Stroke:Compression Ratio:Net Horsepower: (max)Gross Horsepower: (max)Net Torque: (max)Gross Torque: (max)Weight:Fuel: 80 octane gasolineEngine Oil:POWER TRAINClutch: Dry disc, 2 plateTransfer Case: Fixed ratio

Gear Ratio: 2:1Transmission: manual, 4 speeds forward, 1 reverse (synchromesh 3rd and 4th)



Brakes: Mechanical, external contractingFinal Drive: Spur gear Gear Ratio: 2.23:1Drive Sprocket: At front of vehicle with 22 teeth



Tracks: Outside guide, dry pin; T78Type: Single pin, 11.25 inch width, cast malleable ironPitch: 3 inchesShoes per Vehicle: 212 (106/track)Ground Contact Length: 102.5 inches

ELECTRICAL SYSTEMNominal Voltage: 12 volts DCMain Generator: (1) 12 volts, 50 amperes, belt driven by main engineAuxiliary Generator: NoneBattery: (2) 6 volts in seriesCOMMUNICATIONSRadio: SCR 510 in rear of turretInterphone: RC99, 3 stationsFlag Set M238Ground Signals Projector M4 (command tanks only)FIRE AND GAS PROTECTION



484

LIGHT TANK M24

GENERAL DATACrew: 4 or 5 menLength: Gun forward, w/sandshields 219 inchesLength: Gun to rear, w/sandshields 198 inchesLength: w/o gun, w/sandshields 198 inchesGun Overhang, Gun forward, w/sandshields 21 inchesWidth: Over sandshields 118 inchesHeight: Over AA MG 109 inchesTread: 96 inchesGround Clearance: 18 inchesFire Height: 73 inchesTurret Ring Diameter: (inside) 60 inchesWeight, Combat Loaded: 40,500 poundsWeight, Unstowed: 36,300 poundsPower to Weight Ratio: Net 10.9 hp/ton

Gross 14.6 hp/tonGround Pressure: Zero penetration, T72 tracks 11.3 psiARMORType: Turret, rolled homogeneous steel; Hull, rolled homogeneous steel;


Front, Upper 1.0 inches (25mm) 60 degreesLower 1.0 inches (25mm) 45 degrees

Sides, Front 1.0 inches (25mm) 12 degreesRear 0.75 inches (19mm) 12 degrees

Rear, Upper 0.75 inches (19mm) 0 degreesLower 0.75 inches (19mm) 42 degrees

Top 0.5 inches (13mm) 77 to 90 degreesFloor, Front 0.5 inches (13mm) 90 degrees


Gun Shield (cast) 1.5 inches (38mm) 0 to 60 degreesFront (cast) 1.5 inches (38mm) 0 to 60 degreesSides, Right 1.0 inches (25mm) 25 degrees

Left 1.0 inches (25mm) 20 degreesRear 1.0 inches (25mm) 0 degreesTop 0.5 inches (13mm) 68 to 90 degrees



Secondary:(1) .50 caliber MG HB M2 flexible AA mount on turret(1) .30 caliber MG M1919A4 coaxial w/75mm gun in turret(1) .30 caliber MG M1919A4 in bow mount(1) 2 inch Mortar M3 (smoke) fixed in turretProvision for (4) .45 caliber SMG M3

AMMUNITION48 rounds 75mm 8 hand grenades440 rounds .50 caliber 14 2-inch smoke bombs720 rounds .45 caliber3750 rounds .30 caliber

FIRE CONTROL AND VISION EQUIPMENTPrimary Weapon: Direct Indirect

Telescope M71G Azimuth Indicator M21Periscope M4A1 with Gunners Quadrant Ml

Telescope M38A2 Elevation Qyadrant M9Vision Devices: Direct Indirect

Driver Hatch Periscope M6 (1)Asst. Driver Hatch Periscope M6 (1)Commander Vision blocks (6) Periscope M6 (1)

in cupola, hatchGunner None Periscope M4A1 (1)Loader Hatch and pistol port None

Total Periscopes: M4A1 (1), M6 (3)Total Vision Cupolas: (1) w/6 vision blocks on turret topTotal Pistol Ports: Hull (0), Turret (1)

ENGINEMake and Model: Twin Cadillac, Series 44T24Type: 16 cylinder (8/engine), 4 cycle, 90 degree veeCooling System: Liquid Ignition: DelcoDisplacement: 692 cubic inches






(584 pounds/engine)Fuel: 80 octane gasoline 110 gallonsEngine Oil: 16 quarts (8 quarts/engine)POWER TRAINTransmission: Hydramatic (2), 4 speeds

Gear Ratios: 1st 3.92:1 3rd 1.55:12nd 2.53:1 4th 1:1

Transfer Unit: Synchromesh, 2 speeds forward, 1 reverseGear Ratios: high 2.34:1 reverse 2.44:1

low 1.03:1Steering: Controlled differential

Bevel Gear Ratio: 2.62:1 Steering Ratio: 1.33:1Brakes: Mechanical, external contractingFinal Drive: Herringbone gear Gear Ratio: 2.55:1Drive Sprocket: At front of vehicle with 13 teeth

Pitch Diameter: 22.979 inchesRUNNING GEARSuspension: Torsion bar

10 individually sprung dual road wheels (5/track)Tire Size: 25.5 x 4.5 inches6 dual track return rollers (3/track)Dual compensating idler at rear of each trackIdler Size: 22.5 x 5 inchesShock absorbers fitted on first 2 and last 2 road wheels

Tracks: Center guide, rubber bushed; T72, T72E1, and T85E1Type: (T72) Single pin, 16 inch width, steel, parallel grouser

(T72E1) Single pin, 16 inch width, steel, parallel grouser*(T85E1) Double pin, 14 inch width, rubber, chevron 16.5 inch

width w/extended end connectors* Three holes in the T72E1 track shoe permit the attachment of

28 inch grousersPitch: 5.5 inchesShoes per Vehicle: 150 (75/track)Ground Contact Length: 112.25 inches

ELECTRICAL SYSTEMNominal Voltage: 24 volts DCMain Generator: (2, I/engine) 24 volts, 50 amperes, belt driven by each engineAuxiliary Generator: NoneBattery: (4) 6 volts in seriesCOMMUNICATIONSRadio: SCR 508, 528, or 538 in rear of turret; SCR 506 in front of assistant

driver (command tanks only)Interphone: (part of radio) 5 stationsFlag Set M238, Panel Set AP50A, spotlight, sirenFlares: 3 each, M17, M18, M19, and M21 (command Tanks only)Ground Signals Projector M4 (command tanks only)FIRE AND GAS PROTECTION


PERFORMANCEMaximum Speed: Level road 35 miles/hourMaximum Grade: 60 per centMaximum Trench: 8 feetMaximum Vertical Wall: 36 inchesMaximum Fording Depth: 40 inchesMinimum Turning Circle: (diameter) 46 feetCruising Range: Roads approx. 100 miles

485

LIGHT TANK T24E1

GENERAL DATACrew: 4 or 5 menLength: Gun forward, w/sandshields 218 inchesLength: Gun to rear, w/sandshields 196 inchesLength: w/o gun, w/sandshields 196 inchesGun Overhang: Gun forward, w/sandshields 22 inchesWidth: Over sandshields 118 inchesHeight: Over AA MG 112 inchesTread: 96 inchesGround Clearance: 18 inchesFire Height: 73 inchesTurret Ring Diameter: (inside) 60 inchesWeight, Combat Loaded: 40,000 poundsWeight, Unstowed: 36,000 poundsPower to Weight Ratio: Net 20.0 hp/ton


Welded assemblyHull thickness: Actual Angle w/Vertical




Top 0.5 inches (13mm) 77 to 90 degreesFloor, Front 0.5 inches (13mm) 90 degrees


Gun Shield (cast) 1.5 inches (38mm) 0 to 60 degreesFront (cast) 1.5 inches (38mm) 0 to 60 degreesSides, Right 1.0 inches (25mm) 25 degrees

Left 1.0 inches (25mm) 20 degreesRear 1.0 inches (25mm) 0 degreesTop 0.5 inches (13mm) 68 to 90 degrees

ARMAMENTPrimary: 75mm Gun M5 (T13E1) in Mount T90 in turret

Traverse: Hydraulic and Manual 360 degreesTraverse Rate: (max) 15 seconds/360 degreesElevation: Manual +15 to -10 degreesFiring Rate: (max) 20 rounds/minuteLoading System: ManualStabilizer System: Elevation only

Secondary:(1) .50 caliber MG HB M2 flexible AA mount on turret(1) .30 caliber MG M1919A4 coaxial w/75mm gun in turret(1) .30 caliber MG M1919A4 in bow mount(1) 2 inch Mortar M3 (smoke) fixed in turretProvision for (4) .45 caliber SMG M3

AMMUNITION50 rounds 75mm 8 hand grenades600 rounds .50 caliber 15 2-inch smoke bombs600 rounds .45 caliber2500 rounds .30 caliber


Telescope T92 Azimuth Indicator M19Periscope M4 with Gunner's Quadrant Ml

Telescope M38 Elevation Quadrant M9Vision Devices: Direct Indirect

Driver Hatch Periscope M6 (1)Asst. Driver Hatch Periscope M6 (1)Commander Hatch Periscope M6 (2)Gunner None Periscope M4 (1)Loader Hatch None



ENGINEMake and Model: Continental R-975-C4Type: 9 cylinder, 4 cycle, radialCooling System: Air Ignition: MagnetoDisplacement:Bore and Stroke:Compression Ratio:Net Horsepower: (max)Gross Horsepower: (max)Net Torque: (max)Gross Torque: (max)Weight:Fuel: 80 octane gasolineEngine Oil:POWER TRAINTransmission: Spicer automatic, 3 ranges forward, 1 reverse

Range Ratios: low 2.2:1 high 0.80:1normal 1.0:1 reverse 2.0:1

Torque Converter Multiplication: 5.25:1Steering: Controlled differential



10 individually sprung dual road wheels (5/track)Tire Size: 25.5 x 4.5 inches6 dual track return rollers (3/track)Dual compensating idler at rear of each trackIdler Size: 25.5 x 5 inchesShock absorbers fitted on first 2 and last 2 road wheels

Tracks: Center guide, rubber bushed: T72Type: Single pin, 16 inch width, steel, parallel grouserPitch: 5.5 inchesShoes per Vehicle: 150 (75/track)Ground Contact Length: 112.25 inches

ELECTRICAL SYSTEMNominal Voltage: 24 volts DCMain Generator: (1) 24 volts, 80 amperes, belt driven by the main engineAuxiliary Generator: (1) 24 volts, 24 amperes, driven by the auxiliary engineBattery: (4) 6 volts in seriesCOMMUNICATIONSRadio: SCR 508, 528, or 538 in rear of turret; SCR 506 in front of assistantdriver (command tanks only)Interphone: (part of radio) 5 stationsFlag Set M238, Panel Set AP50A, spotlight, sirenFlares: 3 each, M17, M18, M19, and M21 (command tanks only)Ground Signals Projector M4 (command tanks only)FIRE AND GAS PROTECTION


PERFORMANCEMaximum Speed: Level Road 48 miles/hourMaximum Grade: 60 per centMaximum Trench: 6 feetMaximum Vertical Wall: 36 inchesMaximum Fording Depth: 50 inchesMinimum Turning Circle: (diameter) 46 feetCruising Range: Roads approx. 160 miles

486

TWIN 40mm GUN MOTOR CARRIAGE M19 AND M19A1

GENERAL DATACrew: 6 menLength: w/sandshields and rear stowage 228.8 inchesWidth: w/sandshields 115.4 inchesHeight: Over AA MG 116.7 inchesTread: 96.0 inchesGround Clearance: 17.8 inchesFire Height: 78 inchesWeight, Combat Loaded: M19 39,000 pounds

M19A1 41,000 poundsWeight, Unstowed: M19 34,500 pounds

M19A1 36,500 poundsPower to Weight Ratio: Net, M19 11.3 hp/ton

M19A1 10.7 hp/tonGross, M19 15.2 hp/ton

M19A1 14.4 hp/tonGround Pressure: Zero penetration w/T72 tracks, M19 9.8 psi

M19A1 10.3 psiARMORType: Rolled homogeneous steel; Welded assemblyHull Thickness:

Front, UpperLower

SidesRear, Upper

LowerTop, Front

RearFloor, Front


Gun shields, FrontSides

SidesRearTop

ARMAMENTPrimary: 40 mm Dual Automatic Gun M2 in Mount M4 on rear of chassis

Actual0.5 inches (13mm)0.5 inches (13mm)0.5 inches (13mm)0.5 inches (13mm)


Open0.5 inches (13mm)

0.375 inches (10mm)


Open


90 degrees



Traverse: Hydraulic and manualTraverse Rate: (max)Elevation: Hydraulic and manualElevation Rate: (max)Firing Rate: (max)

360 degrees9 seconds/360 degrees+85 to -3 degrees25 degrees/second240 rounds/minute(120 rounds/gun)AutomaticNone

Loading System:Stabilizer System:

Secondary:Provision for (2) .45 caliber SMG M3Provision for (4) .30 caliber Carbine Ml w/(l) Grenade Launcher M8

AMMUNITION352 rounds 40mm* 12 hand grenades420 rounds .45 caliber 10 rifle grenades M9A1430 rounds .30 caliber (carbine)*An additional 320 40mm rounds carried in the ammunition trailer

FIRE CONTROL AND VISION EQUIPMENTPrimary Weapon: This same fire control system is used for antiaircraft fire and

for direct and indirect fire against ground targets.Computing Sight M13 or M13A1 w/reflex sights M23 and M24Local Control System M16 or M16A1Azimuth Indicator T23

Vision Devices: Direct IndirectDriver Hatch Periscope M6 (1)Asst. Driver Hatch Periscope M6 (1)Commander Open top NoneCannoneers Open top None

Total Periscopes: M6 (2)

ENGINEMake and Model: Twin Cadillac, Series 44T4Type: 16 cylinder (8/engine), 4 cycle, 90 degree veeCooling System: Liquid Ignition: DelcoDisplacement:



Net Torque: (max)

Gross Torque: (max)

Weight:


Fuel: 80 octane gasolineEngine Oil:POWER TRAINTransmission: Hydramatic (2), 4 speeds





Pitch Diameter: w/T72 or T72E1 tracks 22.979 inchesW/T85E1 tracks 22.816 inches

RUNNING GEARSuspension: Torsion bar

10 individually sprung dual road wheels (5/track)Tire Size: 25.5 x 4.5 inches8 dual track return rollers (4/track)Dual compensating idler at rear of each trackIdler Size: 22.5 x 5 inchesShock absorbers on first 2 and last 2 road wheels of each track


(T72E1) Single pin, 16 inch width, steel, parallel grouser*(T85E1) Double pin, 14 inch width, rubber, chevron 16.5 inch

width w/extended end connectors* Three holes in the T72E1 track shoe permit the attachment of

28 inch grousersPitch: 5.5 inchesShoes per Vehicle: 160 (80/track)Ground Contact Length: 124 inches

ELECTRICAL SYSTEMNominal Voltage: 24 volts DCMain Generator: (2, I/engine) 24 volts, 150 amperes, belt driven

by each engineAuxiliary Generator: (1, on M19A1 only) 24 volts, 150 amperes, gear driven

by the auxiliary engineBattery: (4) 12 volts, 2 sets of 2 in series connected in parallelCOMMUNICATIONSRadio: (M19) SCR 510 or AN/VRC-5 in drivers' compartment

(M19A1) AN/VRC-5 in drivers' compartment with SCR 593 orAN/GRR-5 in right turret bulge

Interphone: RC99 w/SCR 510, 4 stationsFlag Set M238, Panel Set AP50AFlares: 3 each, M17, MIS, M19, and M21FIRE AND GAS PROTECTION



487

75mm HOWITZER MOTOR CARRIAGE M8

GENERAL DATACrew: 4 menLength: w/sandshields 196 inchesWidth: w/sandshields 91.5 inchesHeight: Over AA MG 107 inchesTread: 73.5 inchesGround Clearance: 14 inchesFire Height: 76 inchesTurret Ring Diameter: (inside) 54.4 inchesWeight, Combat Loaded: 34,600 poundsWeight, Unstowed: 31,000 poundsPower to Weight Ratio: Net 12.7 hp/ton





Rear, Upper 1.0 inches (25mm) 50 degreesMiddle 1.0 inches (25mm) 0 degreesLower 1.0 inches (25mm) 17 degrees

Top 0.5 inches (13mm) 90 degreesFloor, Front 0.5 inches (13mm) 90 degreesRear 0.375 inches (10mm) 90 degrees

Turret Thickness:Howitzer Shield (cast) 1.5 inches (38mm) 0 to 60 degreesFront 1.5 inches (38mm) 0 to 63 degreesSides 1.0 inches (25mm) 20 degreesRear 1.0 inches (25mm) 20 degreesTop open

ARMAMENTPrimary: 75mm Howitzer M2 or M3 in Mount M7 in turret

Traverse: Manual 360 degreesElevation: Manual +40 to -20

degreesFiring Rate: (max) 6 rounds/minuteLoading System: ManualStabilizer System: None

Secondary:(1) .50 caliber MG HB M2 flexible, ring mount on turretProvision for (1) .45 caliber SMG M1928A1Provision for (3) .30 caliber Carbine Ml

AMMUNITION46 rounds 75mm 8 hand grenades400 rounds .50 caliber600 rounds .45 caliber735 rounds .30 caliber (carbine)


Telescope M70D Panoramic Telescope M12A5Aiming Post Ml

Gunner's Quadrant MlVision Devices: Direct Indirect

Driver Vision door Periscope M9 (2)Asst. Driver Vision door Periscope M9 (2)Commander Open top turret NoneGunner Open top turret None


ENGINEMake and Model: Twin Cadillac, Series 42Type: 16 cylinder (8/engine), 4 cycle, 90 degree veeCooling System: Liquid Ignition: DelcoDisplacement: 692 cubic inches






(584 pounds/engine)Fuel: 80 octane gasoline 89 gallonsEngine Oil: 16 quarts (8 quarts/engine)POWER TRAINTransmission: Hydramatic, (2) 4 speeds forward, 1 reverse










ELECTRICAL SYSTEMNominal Voltage: 12 volts DCMain Generator: (2, I/engine), 12 volts, 50 amperes

(25 amperes/generator), belt driven by each engineAuxiliary Generator: (1) 12 volts, 50 amperes, driven by the auxiliary engineBattery: (1) 12 voltsCOMMUNICATIONSRadio: SCR 510 in right sponsonInterphone: RC99, 3 stationsFlares: 3 each, M17 and M18Panel Set AP50AGround Signals Projector M4FIRE AND GAS PROTECTION



488

76mm GUN MOTOR CARRIAGE M18

GENERAL DATACrew: 5 menLength: Gun forward 262 inchesLength: w/o gun 208 inchesGun Overhang: Gun forward 54 inchesWidth: Over track guards 113 inchesHeight: Over AA MG 101 inchesTread: 94.63 inchesGround Clearance: 14.3 inchesFire Height: 73.8 inchesTurret Ring Diameter: (inside) 69 inchesWeight, Combat Loaded: 39,000 poundsWeight, Unstowed: 35,500 poundsPower to Weight Ratio: Net 20.5 hp/ton

Gross 23.6 hp/tonGround Pressure: Based on a 3116 square inch contact area 12.6 psiARMORType: Turret, rolled and cast homogeneous steel; Hull, rolled homogeneous

steel; Welded assemblyActual

0.5 inches (13mm)0.5 inches (13mm)0.5 inches (13mm)0.5 inches (13mm)0.5 inches (13mm)0.5 inches (13mm)0.5 inches (13mm)0.5 inches (13mm)0.31 inches (8mm)0.19 inches (5mm)


0 degrees13 degrees35 degrees90 degrees90 degrees


Upper middleLower middleLower

Sides, UpperLower

Rear, UpperLower

TopFloor

Turret Thickness:Gun Shield 0.75 inches (19mm) 0 to 60 degreesFront (cast) 1.0 inches (25mm) 23 degreesSides 0.5 inches (13mm) 20 degreesRear 0.5 inches (13mm) 9 degreesTop Open

ARMAMENTPrimary: 76mm Gun M1A1, M1A1C, or M1A2 in Mount Ml in turret

Traverse: Hydraulic and manual 360 degreesTraverse Rate: (max) 15 seconds/360 degreesElevation: Manual +20 to —10 degreesFiring Rate: (max) 20 rounds/minuteLoading System: ManualStabilizer System: None

Secondary :(1) .50 caliber MG HB M2 flexible, ring mount on turretProvision for (5) .30 caliber Carbine Ml

AMMUNITION45 rounds 76mm 12 hand grenades800 rounds .50 caliber 4 smoke pots Ml HC450 rounds .30 caliber (carbine)


Vision Devices:DriverAsst. DriverCommanderGunnerLoader

DirectTelescope M76C or T93

Periscope M4A1 withTelescope M47A2

DirectHatchHatch

Open top turretOpen top turretOpen top turret

IndirectAzimuth Indicator M18Elevation Quadrant M9Gunner's Quadrant Ml

IndirectPeriscope M6 (1)Periscope M6 (1)

NonePeriscope M4A1 (1)

NoneTotal Periscopes: M4A1 (1), M6 (2)


ENGINEMake and Model: Continental R-975-C4Type: 9 cylinder, 4 cycle, radialCooling System: Air Ignition: MagnetoDisplacement:Bore and Stroke:Compression Ratio:Net Horsepower: (max)Gross Horsepower: (max)Net Torque: (max)Gross Torque: (max)Weight:Fuel: 80 octane gasolineEngine Oil:POWER TRAINRear Transfer Case: Spur gear

Gear Ratio: 1:1Front Transfer Case: Spur gear

Gear Ratio: 1.29:1Transmission: Torqmatic, 3 speeds forward, 1 reverse

Gear Ratios: 1st 1.000:1 3rd 0.244:12nd 0.421:1 reverse 0.756:1

Torque Converter: Detroit Transmission 900TRatio: (max) 4.5:1


Brakes: Mechanical, external contractingFinal Drive: Spur gear Gear Ratio: 2.176:1Drive Sprocket: At front of vehicle with 31 teeth (alternate engaged)

The sprocket and final drive unit is pivoted and fitted withcompensating linkage to maintain track tensionPitch Diameter: 25.234 inches


10 individually sprung dual road wheels (5/track)Tire Size: 26 x 4.5 inches8 dual track return rollers (4/track)Dual adjustable idler at rear of each trackIdler Size: 23.5 x 4.5 inchesShock absorbers on first 2 and last 2 road wheels of each track

Tracks: Center guide, rubber bushed; T69Type: Single pin, 12 inch width, steel, parallel grouser

The 14 3/8 inch long track pins increase the projected groundcontact area to 3116 square inches

Pitch: 5.09 inchesShoes per Vehicle: 166 (83/track)Ground Contact Length: 116.5 inches

ELECTRICAL SYSTEMNominal Voltage: 24 volts DCMain Generator: (1) 24 volts, 50 amperes, driven by main engineAuxiliary Generator: (1) 24 volts, 50 amperes, driven by the auxiliary engineBattery: (2) 12 volts in seriesCOMMUNICATIONSRadio: SCR 610 in rear of turretInterphone: RC99, 5 stationsFlag Set M238Pistol Pyrotechnic M2FIRE AND GAS PROTECTION


PERFORMANCEMaximum Speed: Level RoadMaximum Grade:Maximum Trench:Maximum Vertical Wall:Maximum Fording Depth:Minimum Turning Circle: (diameter)Cruising Range: Roads

50 miles/hour60 per cent6.1 feet36 inches48 inches66 feet

approx. 100 miles

489

105mm HOWITZER MOTOR CARRIAGE T82

GENERAL DATACrew:Length:Width: Over side railsHeight: Over MG mountTread:Ground Clearance:Fire Height:Weight, Combat Loaded:Weight, Unstowed:Power to Weight Ratio: Net

GrossGround Pressure: Zero penetrationARMORType: Rolled homogeneous steel; Welded assemblyHull Thickness:

Front, Fighting CompartmentUpper HullLower Hull (cast)

Actual0.5 inches (13mm)

1.125 inches (29mm)1.5 to 2.5 inches

(38-64mm)0.25 inches (6mm)

1.125 inches (29mm)1.0 inches (25mm)0.25 inches (6mm)1.0 inches (25mm)1.0 inches (25mm)1.0 inches (25mm)

Open0.5 inches (13mm)

0.375 inches (10mm)

4 men175 inches

95.5 inches90.5 inches77.0 inches

17 inches67 inches

32,000 pounds28,000 pounds



0 to 23 degrees


49 degrees0 degrees

17 degrees


Sides, Fighting CompartmentLower FrontLower Rear

Rear, Fighting CompartmentUpper HullMiddle HullLower Hull

Top, Fighting CompartmentFloor, Front

RearARMAMENTPrimary: 105mm Howitzer M3 in modified Mount M3A1 in front hull

Traverse: Manual 40 degrees(18 left, 22 right)

Elevation: Manual +35 to -5 degreesFiring Rate: (max) 8 rounds/minuteLoading System: ManualStabilizer System: None

Secondary:(1) .50 caliber MG HB M2 on pedestal mount over howitzer

or right frontProvision for (4) .30 caliber Carbine Ml

AMMUNITION58 rounds 105mm 12 hand grenades500 rounds .50 caliber500 rounds .30 caliber (carbine)


Vision Devices:DriverCommanderCannoneers

DirectTelescope T117E4 (2)

DirectVision door

Open topOpen top

IndirectPanoramic sight MlRange Quadrant T15

Gunner's Quadrant MlIndirect

Protectoscope (1)NoneNone

Total Protectoscope s : (1) in driver's vision door

ENGINEMake and Model: Twin Cadillac, Series 42Type: 16 cylinder (8/engine), 4 cycle, 90 degree veeCooling System: Liquid Ignition: DelcoDisplacement:



Net Torque: (max)

Gross Torque: (max)

Weight:

Fuel: 80 octane gasolineEngine Oil:POWER TRAINTransmission: Hydramatic (2), 4 speeds forward, 1 reverse


Gear Ratios: 4th 1.00:13.81:1

1st 3.26:12nd 2.26:13rd 1.44:1






Tracks: Outside guide, rubber bushed; T55E1 w/extended end connectorsType: Double pin, 16 inch width, steel, chevronPitch: 5.5 inchesShoes per Vehicle: 132 (66/track)Ground Contact Length: 121 inches

ELECTRICAL SYSTEMNominal Voltage: 12 volts DCMain Generator: (2, I/engine) 12 volts, 50 amperes, (25 amperes/generator),

belt driven by each engineAuxiliary Generator: NoneBattery: (1) 12 voltsCOMMUNICATIONSRadio: SCR 510 in left sponsonInterphone: NoneFlag Set M238, Panel Set AP50AFlares: 3 each M17, M18, M19, and M21FIRE AND GAS PROTECTION


PERFORMANCEMaximum Speed: Level roadMaximum Grade:Maximum Trench:Maximum Vertical Wall:Maximum Fording Depth:Minimum Turning Circle: (diameter)Cruising Range: Roads approx


5.3 feet18 inches36 inches42 feet

100 miles

490


GENERAL DATACrew: 7 menLength: w/rear stowage 216 inchesWidth: 118 inchesHeight: Over AA MG 112 inchesTread: 96 inchesGround Clearance: 18 inchesFire Height: 66 inchesWeight, Combat Loaded: 46,000 poundsWeight, Unstowed: 38,000 poundsPower to Weight Ratio: Net 9.7 hp/ton

Gross 12.9 hp/tonGround Pressure: Zero penetration w/T72 tracks 11.6 psiARMORType: Rolled homogeneous steel; Welded assemblyHull Thickness: Actual Angle w/Vertical

Front, Upper 0.5 inches (13mm) 60 degreesLower 0.5 inches (13mm) 45 degreesFighting Compartment 0.5 inches (13mm) 0 degrees

Sides, Front 0.5 inches (13mm) 12 degreesFighting Compartment 0.5 inches (13mm) 0 degrees


Top, Front 0.5 inches (13mm) 90 degreesFighting Compartment Open

Floor, Front 0.5 inches (13mm) 90 degreesRear 0.375 inches (10mm) 90 degrees

Howitzer Shield: 0.5 inches (13mm) 0 to 38 degreesARMAMENTPrimary: 105mm Howitzer M4 in Mount M5 (T14) in front hull

Traverse: Manual 51.7 degrees(25.4 left, 26.3 right)

Elevation: Manual +42.8 to -10.5 degreesFiring Rate: (max) 8 rounds/minuteLoading System: ManualStabilizer System: None

Secondary:(1) .50 caliber MG HB M2 on ring mount at right front of hullProvision for (1) .45 caliber SMG M3Provision for (6) .30 caliber Carbine M2

AMMUNITION126 rounds 105mm 8 hand grenades990 rounds .50 caliber750 rounds .45 caliber960 rounds .30 caliber (carbine)

FIRE CONTROL AND VISION EQUIPMENTPrimary Weapon: Direct

Telescope M76G

Vision Devices: DirectDriver HatchCommander Open topCannoneers Open top


IndirectPanoramic Telescope M12A2

Range Quadrant T14Gunner's Quadrant Ml

IndirectPeriscope M6 (1)

NoneNone

ENGINEMake and Model: Twin Cadillac, Series 44T4Type: 16 cylinder, (8/engine), 4 cycle, 90 degree veeCooling System: Liquid Ignition: DelcoDisplacement:



Net Torque: (max)

Gross Torque: (max)

Weight:


Fuel: 80 octane gasolineEngine Oil:POWER TRAINTransmission: Hydramatic (2), 4 speeds





Pitch Diameter: w/T72 or T72E1 tracks 22.979 inchesW/T85E1 tracks 22.816 inches




(T72E1) Single pin, 16 inch width, steel parallel grouser*(T85E1) Double pin, 14 inch width, rubber, chevron 16.5 inchwidth w/extended end connectors

* Three holes in the T72E1 track shoe permit the attachment of28 inch grousers


ELECTRICAL SYSTEMNominal Voltage: 24 volts DCMain Generator: (2, 1/engine) 24 volts, 50 amperes, belt driven by each engineAuxiliary Generator: NoneBattery: (4) 6 volts in seriesCOMMUNICATIONSRadio: NoneInterphone: RC99, 3 stationsFlag Set M238, Panel Set AP50AFlares: 3 each, M17, M18, M19, and M21FIRE PROTECTION



491


GENERAL DATACrew: 5 menLength: 230 inchesWidth: 112 inchesHeight: 94 inchesTread: 96 inchesGround Clearance: 17 inchesFire Height: 77 inchesWeight, Combat Loaded: 42,500 poundsWeight, Unstowed: 38,500 poundsPower to Weight Ratio: Net 10.4 hp/ton

Gross 13.9 hp/tonGround Pressure: Zero penetration, T72 tracks 0.7 psiARMORType: Rolled homogeneous steel; Welded assemblyHull Thickness: Actual Angle w/Vertical


Sides 0.5 inches (13mm) 12 degreesRear 0.5 inches (13mm) 0 degreesTailgate 0.25 inches (6mm) 0 degrees (raised)Top, Front 0.5 inches (13mm) 90 degreesRear openCrew Shields 0.25 inches (6mm) 0 degreesFloor, Front 0.5 inches (13mm) 90 degrees

Rear 0.375 inches (10mm) 90 degreesARMAMENTPrimary: 155mm Howitzer Ml in Mount M14 (T19) on rear of chassis

Traverse: Manual 37.5 degrees(20.5 left, 17 right)

Elevation: Electric and manual +45 to —5 degreesFiring Rate: (max) 4 rounds/minuteLoading System: ManualStabilizer System: None

Secondary:Provision for (2) .45 caliber SMG M3Provision for (3) .30 caliber Carbine Ml

AMMUNITION22 rounds 155mm 12 hand grenades420 rounds .45 caliber480 rounds .30 caliber (carbine)


Telescope M69D* Panoramic Telescope M12*Gunner's Quadrant Ml

* Later, the Telescope M69D was eliminated and the Panoramic TelescopeM12A6 was used for both direct and indirect fire

Vision Devices: Direct IndirectDriver Hatch Periscope M6 (1)Asst. Driver Hatch Perjjcope M6 (1)Commander Open top NoneCannoneers Open top None


ENGINEMake and Model: Twin Cadillac, Series 44T4Type: 16 cylinder (8/engine), 4 cycle, 90 degree veeCooling System: Liquid Ignition: DelcoDisplacement: 692 cubic inches






(584 pounds/engine)Fuel: 80 octane gasoline 110 gallonsEngine Oil: 16 quarts (8 quarts/engine)POWER TRAINTransmission: Hydramatic (2), 4 speeds








(T72E1) Single pin, 16 inch width, steel, parallel grouser*(T85E1) Double pin, 14 inch width, rubber, chevron16.5 inch width w/extended end connectors

Three holes in the T72E1 track shoe permit the attachment of28 inch grousers


ELECTRICAL SYSTEMNominal Voltage: 24 volts DCMain Generator: (2, I/engine) 24 volts, 50 amperes, belt driven by each engineAuxiliary Generator: NoneBattery: (4) 6 volts in seriesCOMMUNICATIONSRadio: SCR 510, 610, or 619 in drivers' compartmentInterphone: RC99, 3 stationsFlag Set M238, Panel Set AP50AFlares: 3 each, M17, M18, M19, and M21FIRE PROTECTION



492

LANDING VEHICLE TRACKED (ARMORED) MARK 1

GENERAL DATACrew: 6 menLength: 313 inchesWidth: 128 inchesHeight: 121 inchesTread: 113.5 inchesGround Clearance: Hard surface 18 inchesFire Height: 107 inchesDraft: Loaded 50 inchesTurret Ring Diameter: (inside) 46.75 inchesWeight, Combat Loaded: 32,800 poundsPower to Weight Ratio: Net 15.2 hp/ton



0.5 inches (13mm)0.25 inches (6mm)0.25 inches (6mm)0.25 inches (6mm)12 gauge mild steel0.25 inches (6mm)0.25 inches (6mm)0.25 inches (6mm)10 gauge mild steel




Hull Thickness:Front, Upper (cab)

MiddleLower

SidesPontoonsRear, Upper

LowerTopFloor

Turret Thickness:Gun Shield (cast) 2.0 inches (51mm) 0 to 14 degreesFront 0.5 inches (13mm) 10 degreesSides 0.5 inches (13mm) 0 degreesRear 0.5 inches (13mm) 0 degreesTop 0.25 inches (6mm) 75 to 90 degrees



Secondary:(1) .30 caliber MG M1919A5 coaxial w/37mm gun in turret(2) .30 caliber MG M1919A4 on Mark 21 Scarff mounts behind turret

AMMUNITION104 rounds 37mm6000 rounds .30 caliber

FIRE CONTROL AND VISION EQUIPMENTPrimary Weapon: Telescope M54

Periscope M4 with Telescope M40Vision Devices: Direct Indirect

Driver Hatch and Periscope M6 (1)front window

Asst. Driver Hatch Periscope M6 (1)Commander Hatch Periscope M6 (2)Gunner Hatch Periscope M4 (1)Machine Gunners Open Mount None



5th 0.738:16.19:1





Brakes: Mechanical, external contractingFinal Drive: Herringbone gear Gear Ratio: 3.150:1Drive Sprocket: At front of vehicle with 37 teeth (alternate engaged)

Pitch Diameter: 23.49 inchesRUNNING GEARSuspension: Torsilastic

22 road wheels (11/track)Tire Size: 12 x 7.25 inches4 track return rollers (2/track)Adjustable idler sprocket w/33 teeth at rear of each trackIdler Sprocket Pitch Diameter: 20.95 inches

Tracks: Outside guide, dry pinType: Steel link, 14.25 inch width, extruded grousersPitch: 8 inches (4 inches each for inside and outside links)Shoes per Vehicle: 146 (73/track)Ground Contact Length: 126.5 inches

ELECTRICAL SYSTEMNominal Voltage: 12 volts DCMain Generator: (1) 12 volts, 50 amperes, belt driven by main engineAuxiliary Generator: (1) 12 volts, 50 amperes, driven by the auxiliary engineBattery: (1) 12 voltsCOMMUNICATIONSRadio: TCS (Navy) in right side of driving compartmentInterphone: 6 stationsFIRE PROTECTION


PERFORMANCEMaximum Speed: Level road

In waterMaximum Grade:Maximum Trench:Angle of Approach:Angle of Departure:Maximum Vertical Wall:Maximum Fording Depth:Minimum Turning Circle: (diameter) Land

WaterCruising Range: Roads

Water

25 miles/hour7 miles/hour

60 per cent5 feet

35 degrees30 degrees36 inches

Floats30 feet48 feet

approx. 125 milesapprox. 75 miles

493

LANDING VEHICLE TRACKED (ARMORED) MARK 4 AND 5

6 men313 inches128 inches

122.5 inches113.5 inches

18 inches109 inches22 inches38 inches

54.4 inchesapprox. 40,000 pounds


GENERAL DATACrew:Length:Width:Height:Tread:Ground Clearance: Hard surfaceFire Height:Draft: Loaded, front

rearTurret Ring Diameter: (inside)Weight, Combat Loaded:Power to Weight Ratio: Net

GrossGround Pressure: Zero penetrationARMORType: Turret, rolled homogeneous steel; Hull, rolled homogeneous steel;


Front, Upper (cab) 0.5 inches (13mm) 30 degreesMiddle 0.25 inches (6mm) 83 degreesLower 0.25 inches (6mm) 35 to 90 degrees

Sides 0.25 inches (6mm) 0 degreesPontoons 12 gauge mild steel 0 degreesRear, Upper 0.25 inches (6mm) 0 degrees

Lower 0.25 inches (6mm) 60 degreesTop 0.25 inches (6mm) 90 degreesFloor 10 gauge mild steel 90 degrees

Turret Thickness:Gun Shield (cast) 1.5 inches (51mm) 0 to 60 degreesFront 1.0 inches (25mm) 0 to 63 degreesSides 1.0 inches (25mm) 20 degreesRear 1.0 inches (25mm) 0 degreesTop Open

ARMAMENTPrimary: 75mm Howitzer M3 in Mount M7 [LVT(A)(4)] or M12 [LVT(A)(5)]

in turretTraverse: LVT(A)(4) Manual 360 degrees

LVT(A)(5) Hydraulic and manual 360 degreesTraverse Rate: (max) LVT(A)(5) 15 seconds/360 degreesElevation: Manual +40 to -20 degreesFiring Rate: (max) 6 rounds/minuteLoading System: ManualStabilizer System: LVT(A)(4) None

LVT(A)(5) Elevation onlySecondary:

LVT(A)(4) early: (1) .50 caliber MG HB M2, ring mount on turretLVT(A)(4) late and LVT(A)(5): (2) .30 caliber MG M1919A4, one on

each side of turretLVT(A)(4) late and LVT(A)(5): (1) .30 caliber MG M1919A4 in cab

bow mountAMMUNITION

100 rounds 75mm400 rounds .50 caliber [early LVT(A)(4) only]2000 rounds .30 caliber [early LVT(A)(4) only]6000 rounds .30 caliber [late LVT(A)(4) and LVT(A)(5)]


Telescope M70C LVT(A)(4) Panoramic Telescope M12A5Telescope M70R LVT(A)(5) Gunner's Quadrant Ml

Fuze Setter M14 or M27

Vision Devices:Driver, LVT(A)(4) early

LVT(A)(4) lateand LVT(A)(5)

Asst. Driver, LVT(A)(4) earlyLVT(A)(4) lateand LVT(A)(5)

Commander

Gunner

Loader

Direct IndirectHatch and Periscope M6 (1)

front windowHatch and None

(2) vision blocksHatch Periscope M6 (1)

Hatch and Periscope M6 or(2) vision blocks Periscope M12 (1)Open turret and None(1) vision block*Open turret and None(1) vision block*Open turret and None(1) vision block*

Open turret None


ENGINEMake and Model: Continental W-670-9AType: 7 cylinder, 4 cycle, radialCooling System: Air Ignition: MagnetoDisplacement:Bore and Stroke:Compression Ratio:Net Horsepower: (max)Gross Horsepower: (max)Net Torque: (max)Gross Torque: (max)Weight:Fuel: 80 octane gasolineEngine Oil:POWER TRAINTransmission: Synchromesh, 5 speeds forward, 1 reverse



Brakes: Mechanical, external contractingFinal Drive: Herringbone gear Gear Ratio: 3.150:1Drive Sprocket: At front of vehicle with 37 teeth (alternate engaged)

Pitch Diameter: 23.49 inchesRUNNING GEARSuspension: Torsilastic

22 road wheels (11/track)Tire Size: 12 x 7.25 inches4 track return rollers (2/track)Adjustable idler sprocket w/33 teeth at rear of each trackIdler Sprocket Pitch Diameter: 20.95 inches

Tracks: Outside guide, dry pinType: Steel link, 14.25 inch width, extruded grousersPitch: 8 inches (4 inches each for inside and outside links)Shoes per Vehicle: 146 (73/track)Ground Contact Length: 126.5 inches

ELECTRICAL SYSTEMNomimal Voltage: 12 volts DCMain Generator: (1) 12 volts, 50 amperes, belt driven by main engineAuxiliary Generator: LVT(A)(4), (1) 12 volts, 50 amperes, driven by

the auxiliary engineLVT(A)(5), (2) 12 volts, 50 amperes, driven by

the auxiliary enginesBattery: (2) 12 volts in seriesCOMMUNICATIONSRadio: SCR 508 or 528 in right side of driving compartment

Late LVT(A)(4) and LVT(A)(5) have AN/VRC-3 in left rear of turretAN/GRC-9 (command vehicles only) in hull behind cab

Interphone: (part of radio) 6 stationsFIRE PROTECTION


PERFORMANCEMaximum Speed: Level road 25 miles/hour

In water 7 miles/hourMaximum Grade: 60 per centMaximum Trench: 5 feetAngle of Approach: 35 degreesAngle of Departure: 30 degreesMaximum Vertical Wall: 36 inchesMaximum Fording Depth: FloatsMinimum Turning Circle: (diameter) Land 30 feet

Water 48 feetCruising Range: Roads approx. 125 miles

Water approx. 75 miles

Cannoneer*Late model turrets only

Total Periscopes: LVT(A)(4) early, M6 (2)LVT (A)(4) late and LVT(A)(5), M6 or M12 (1)

Total Vision Blocks: LVT(A)(4) late and LVT(A)(5) (7) 494

WEAPON DATA SHEETS

Armament for the light tanks described in this vol-ume ranged from the 37mm gun M1916 in the six-ton tankM1917 to the lightweight 75mm gun M6 in the light tankM24. The latter was identical in ballistic performance tothe 75mm gun M3 which armed the major portion of theSherman medium tanks. The light tank chassis also servedas a motor carriage for weapons as heavy as the 155mmhowitzer Ml. Data describing the characteristics of the var-ious weapons installed on these chassis are tabulated onthe following pages. The dimensions used are defined inthe sketches below.

CANNON WITH SLIDING WEDGE BREECHBLOCK

A. Length of Chamber (to rifling)

B. length of Rifling

C. Length of Bore

D. Depth of Breech Recess

E. Length, Muzzle to Rear Face of Breech

F. Additional Length, Muzzle Brake, Etc.

G. Overall Length

H. Length, Breechblock and Firing Lock

CANNON WITH INTERRUPTED SCREW BREECHBLOCK

APAPBCAPCBC

APCRHEHEATCP-T

Armor piercing, uncappedArmor piercing with ballistic capArmor piercing with armor piercing

cap and ballistic capArmor piercing, composite rigidHigh explosiveHigh explosive antitank, shaped chargeConcrete piercingTracer

Penetration performance data for the various types ofarmor piercing ammunition are quoted for 30 degree anglesof obliquity as this was the common practice during WorldWar II. It should be noted that the relative performancebetween different types of projectiles at 30 degrees is notnecessarily maintained at other angles of obliquity. Forexample, the AP monoblock shot may be more effectivethan APCR at high angles of obliquity, but the reverse istrue at low angles. The simplified sketch in the introduc-tion to the vehicle data sheets defined the angle of obliq-uity as the angle between a line perpendicular to the armorplate and the projectile path. However, in three dimensions,the calculation of the true angle is a little more compli-cated as indicated in these sketches. Here, the angle ofobliquity is shown to be the angle whose cosine equals theproduct of the cosines for the vertical and lateral attackangles.

The official nomenclature for each type of ammuni-tion is that used during its period of greatest service. How-ever, since this was frequently changed during the servicelife, a standard nomenclature is added in parentheses toprevent confusion. These standard terms, which are usedseparately and in combination, are defined as follows.

495

37mm GUNS M5 AND M6

Carriage and Mount

Length of Chamber (to rifling)Length of RiflingLength of Chamber (to projectile base)Travel of Projectile in BoreLength of Bore

Depth of Breech RecessLength, Muzzle to Rear Face of Breech

Additional Length, Muzzle Brake, etc.Overall LengthDiameter of BoreChamber CapacityWeight, TubeTotal WeightType of Breechblock

RiflingAmmunitionPrimerWeight, Complete Round

Weight, Projectile

Maximum Powder PressureMaximum Rate of FireMuzzle Velocity

Muzzle Energy of Projectile, KE=½MV2

Rotational energy is neglected andvalues are based on long tons(2240 pounds)

Maximum Range (independent of mount)

Penetration Performance, M6 Gun*

APC M51 Shot (APCBC-T)

APC M51 Shot (APCBC-T)

Range

Range

Light Tanks M2A4 in Mount M20 (M5 gun)Light Tanks M3 in Mount M22 (M5 Gun)Light Tanks M3A1 and M5 in Mount M23 (M6 Gun)Light Tanks M3A3 and M5A1 in Mount M44 (M6 Gun)LVT(A)(1) in Mount M44 (M6 Gun)9.55 inches63.35 inches (M5 Gun), 68.45 inches (M6 Gun)8.1 inches (square base projectiles)64.8 inches (M5 Gun), 69.9 inches (M6 Gun)72.9 inches, 50.0 calibers (M5 Gun)78.0 inches, 53.5 calibers (M6 Gun)4.5 inches77.4 inches, 53.1 calibers (M5 Gun)82.5 inches, 56.6 calibers (M6 Gun)None77.4 inches (M5 Gun), 82.5 inches (M6 Gun)1.457 inches (37mm)19.35 cubic inches (APC M51), 19.19 cubic inches (HE M63)138 pounds (M6 Gun)185 pounds (M6 Gun)Manually operated vertical sliding wedge (M5 Gun)Semiautomatic vertical sliding wedge (M6 Gun)12 grooves, uniform right-hand twist, one turn in 25 calibersFixedPercussionAPC M51 Shot (APCBC-T)AP M74 Shot (AP-T)HE M63 Shell (HE)Canister M2APC M51 Shot (APCBC-T)AP M74 Shot (AP-T)HE M63 Shell (HE)Canister M2 (122 steel balls)50,000 psi30 rounds/minute

APC M51 Shot (APCBC-T)AP M74 Shot (AP-T)HE M63 Shell (HE)Canister M2APC M51 Shot (APCBC-T)AP M74 Shot (AP-T)HE M63 Shell (HE)Canister M2APC M51 Shot (APCBC-T)AP M74 Shot (AP-T)HE M63 Shell (HE)Canister M2

3.48 pounds3.34 pounds3.13 pounds3.49 pounds1.92 pounds1.92 pounds1.61 pounds1.94 pounds

M5 M62855 ft/sec 2900 ft/sec2855 ft/sec 2900 ft/sec2565 ft/sec 2600 ft/sec2470 ft/sec 2500 ft/sec108 ft-tons 112 ft-tons108 ft-tons 112 ft-tons73 ft-tons 75 ft-tons82 ft-tons 84 ft-tons12,725 yards 12,850 yards8,625 yards 8,725 yards9,425 yards 9,500 yards

(M5 and M6) approx. 150 to 200 yardsHomogeneous steel armor at 30 degrees obliquity

500 yards 1000 yards 1500 yards 2000 yards2.1 inches (53mm) 1.8 inches (46mm) 1.6 inches (40mm) 1.4 inches (35mm)

Face-hardened steel armor at 30 degrees obliquity500 yards 1000 yards 1500 yards 2000 yards

1.8 inches (46mm) 1.6 inches (40mm) 1.5 inches (38mm) 1.3 inches (33mm)

*The lower velocity of the M5 gun reduced the penetration by approximately 0.1 inches (3mm) at all ranges

496

Carriage and MountLength of Chamber (to rifling)Length of RiflingLength of Chamber (to projectile base)

Travel of Projectile in Bore

Length of BoreDepth of Breech RecessLength, Muzzle to Rear Face of BreechLength of Flash HiderLength of Automatic Loader AssemblyOverall LengthDiameter of BoreChamber CapacityWeight of Barrel Assembly (each)Total WeightType of BreechblockRiflingAutomatic LoaderAmmunitionPrimerWeight, Complete Round

Weight, Projectile

Maximum Rate of FireMuzzle Velocity

Muzzle Energy of Projectile KE=½MV2



40MM DUAL AUTOMATIC GUN M2

Motor Carriages M19 and M19A1 in Mount M412.73 inches75.85 inches11.2 inches (square base shot AP-T M81A1)9.8 inches (boat-tailed shell HE-T Mk II)77.4 inches (square base shot AP-T M81A1)78.8 inches (boat-tailed shell HE-T Mk H)88.58 inches, 56.3 calibers5.9 inches, approx.95 inches, approx.10 inches, approx.39 inches, approx.144 inches, approx.1.573 inches (40mm)29.9 cubic inches296 pounds2000 pounds, approx.Semiautomatic, vertical sliding wedge16 grooves, increasing twist, one turn in 45 to 30 calibersEach w/7 round magazine loaded from 4 round clipsFixedPercussionAP-T M81A1 Shot (AP-T)HE-T Mk II Shell (HE-T)AP-T M81A1 Shot (AP-T)HE-T Mk II Shell (HE-T)240 rounds/minute (120 rounds/gun)AP-T M81A1 Shot (AP-T)HE-T Mk II Shell (HE-T)AP-T M81A1 Shot (AP-T)HE-T Mk II Shell (HE-T)

Penetration Performance

AP-T M81A1 Shot (AP-T)

AP-T M81A1 Shot (AP-T)

AP-T M81A1 Shot (AP-T)HE-T Mk II Shell (HE-T)Homogeneous steel armor at 30 degrees obliquity

Range 500 yards 1000 yards 1500 yards1.9 inches (48mm) 1.6 inches (41mm) 1.2 inches (30mm)

Face-hardened steel armor at 30 degrees obliquityRange 500 yards 1000 yards 1500 yards

1.8 inches (46mm) 1.5 inches (38mm) 1.2 inches (30mm)

4.57 pounds4.70 pounds1.96 pounds1.93 pounds

2870 ft/sec2870 ft/sec112 ft-tons110 ft-tons

9,475 yards10,850 yards*

2000 yards1.0 inches (25mm)


* Actual range limited by shell destroying tracer to approximately 5200 yards horizontal and 5100 yards vertical

497

6 POUNDER MARK III

Carriage and MountLength of Chamber (to rifling)Length of RiflingLength of Chamber (to projectile base)Travel of Projectile in BoreLength of BoreDepth of Breech RecessLength, Muzzle to Rear Face of BreechAdditional Length, Muzzle Brake, etc.Overall LengthDiameter of BoreChamber CapacityTotal WeightType of BreechblockRiflingAmmunitionPrimerWeight, Complete Round

Weight, Projectile





Penetration PerformanceRange

APC M86 Projectile (APCBC/HE-T)

RangeAPC M86 Projectile (APCBC/HE-T)

Light Tank T7E2 in turret combination mount18.02 inches78.18 inches16.2 inches80.0 inches96.2 inches, 42.9 calibers4.75 inches100.95 inches, 45.0 calibersNone100.95 inches2.244 inches (57mm)100.05 cubic inches (AP M70), 98.87 cubic inches (APC M86)761 poundsSemiautomatic, vertical sliding wedge24 grooves, uniform right-hand twist, one turn in 30 calibersFixedPercussionAPC M86 Projectile (APCBC/HE-T)AP M70 Shot (AP-T)APC M86 Projectile (APCBC/HE-T)AP M70 Shot (AP-T)46,000 psi30 rounds/minuteAPC M86 Projectile (APCBC/HE-T)AP M70 Shot (AP-T)APC M86 Projectile (APCBC/HE-T)AP M70 Shot (AP-T)

13.88 pounds12.92 pounds7.27 pounds6.28 pounds


approx. 13,000 yardsapprox. 8,900 yards

APC M86 Projectile (APCBC/HE-T)AP M70 Shot (AP-T)Homogeneous steel armor at 30 degrees obliquity

500 yards 1000 yards 1500 yards 2000 yards3.0 inches (76mm) 2.7 inches (69mm) 2.3 inches (58mm) 2.0 inches (51mm)


2.8 inches (71mm) 2.7 inches (69mm) 2.5 inches (64mm) 2.4 inches (61mm)

498

75mm HOWITZERS M2 AND M3

Carriage and Mount

Length of Chamber (to rifling)Length of RiflingLength of Chamber (to projectile base)Travel of Projectile in BoreLength of BoreDepth of Breech RecessLength, Muzzle to Rear Face of BreechAdditional Length, Muzzle Brake, etc.Overall LengthDiameter of BoreChamber CapacityTotal WeightType of BreechblockRiflingAmmunitionPrimerWeight, Complete Round

Weight, Projectile





Penetration PerformanceHEAT M66 Shell (HEAT-T)

Motor Carriage M8 in Mount M7LVT(A)(4) in Mount M7, LVT(A)(5) in Mount M1211.12 inches35.91 inches7.7 inches (boat-tailed projectiles)39.3 inches (boat-tailed projectiles)47.03 inches, 15.9 calibers7.15 inches54.18 inches, 18.4 calibersNone54.18 inches2.950 inches (75mm)59.08 cubic inches (HE M48)318 pounds (M2 Howitzer), 421 pounds (M3 Howitzer)Manually operated, horizontal sliding wedge28 grooves, uniform right-hand twist, one turn in 20 calibersSemifixed and Fixed (HC BI M89 and HEAT M66)PercussionHE M48 Shell (HE)HE M41A1 Shell (HE)HEAT M66 Shell (HEAT-T)WP M64 Shell, SmokeHE M48 Shell (HE)HE M41A1 Shell (HE)HEAT M66 Shell (HEAT-T)WP M64 Shell, Smoke29,000 psi8 rounds/minuteHE M48 Shell (HE) Charge 4HE M41A1 Shell (HE) Charge 4HEAT M66 Shell (HEAT-T)WP M64 Shell, Smoke, Charge 4HE M48 Shell (HE) Charge 4HE M41A1 Shell (HE) Charge 4HEAT M66 Shell (HEAT-T)WP M64 Shell, Smoke, Charge 4HE M48 Shell (HE) Charge 4HE M41A1 Shell (HE) Charge 4HEAT M66 Shell (HEAT-T)WP M64 Shell, Smoke, Charge 4Homogeneous steel armor at 0 degrees obliquity

3.6 inches at any range

18.24 pounds17.40 pounds16.30 pounds18.89 pounds14.60 pounds13.76 pounds13.10 pounds15.25 pounds

1250 ft/sec1250 ft/sec1000 ft/sec1250 ft/sec158 ft-tons149 ft-tons91 ft-tons165 ft-tons9620 yards9650 yards7900 yards9620 yards

499

75mm GUNS M3, M6, AND M17

Carriage and Mount

Length of Chamber (to rifling)Length of RiflingLength of Chamber (to projectile base)Travel of Projectile in BoreLength of BoreDepth of Breech RecessLength, Muzzle to Rear Face of Breech

M3 GunM6 GunM17 Gun

Additional Length, Muzzle Brake, etc.Overall LengthDiameter of BoreChamber CapacityTotal WeightType of Breechblock

RiflingAmmunitionPrimerWeight, Complete Round

Weight, Projectile






APC M61 Projectile (APCBC/HE-T)HVAP T45* (APCR-T)AP M72 Shot (AP-T)

RangeAPC M61 Projectile (APCBC/HE-T)AP M72 Shot (AP-T)

* Experimental only

Medium Tank M7 in Mount M47 (M3 Gun)Light Tank M24 in Mount M64 (M6 and M17 Guns)14.4 inches96.2 inches12.96 inches (APC M61), 11.5 inches (HE M48)97.67 inches (APC M61), 99.1 inches (HE M48)110.63 inches, 37.5 calibers7.75 inches (M3 Gun), 5.75 inches (M6 and M17 Guns)

118.38 inches, 40.1 calibers116.38 inches, 39.4 calibers116.4 inches, 39.4 calibersNone (M3 and M6 Guns), approx. 5 inches (M17 Gun) w/Muzzle Brake M5118.38 inches (M3 Gun), 116.38 inches (M6 Gun), approx. 121 inches (M17 Gun)2.950 inches (75mm)88.05 cubic inches (APC M61), 80.57 cubic inches (HE M48)893 pounds (M3 Gun), 410 pounds (M6 Gun), 457 pounds (M17 Gun w/Muzzle Brake)Semiautomatic sliding wedge, gun mounted so breechblock slides at 45 degrees in MountM47 and horizontally in Mount M6424 grooves, uniform right-hand twist, one turn in 25.59 calibersFixedPercussionAPC M61 Projectile (APCBC/HE-T) 19.92 poundsHVAP T45 Shot (APCR-T)* 13.60 poundsAP M72 Shot (AP-T) 18.80 poundsHE M48 Shell (HE), Supercharge 19.56 poundsHE M48 Shell (HE), Normal 18.80 poundsHC BI M89 Shell, Smoke 9.83 poundsWP M64 Shell, Smoke 20.26 poundsAPC M61 Projectile (APCBC/HE-T) - 14.96 poundsHVAP T45 Shot (APCR-T)* 8.40 poundsAP M72 Shot (AP-T) 13.94 poundsHE M48 Shell (HE) 14.70 poundsHC BI M89 Shell, Smoke 6.61 poundsWP M64 Shell, Smoke 15.25 pounds38,000 psi20 rounds/minute ,APC M61 Projectile (APCBC/HE-T) 2030 ft/secHVAP T45 Shot (APCR-T)* 2850 ft/secAP M72 Shot (AP-T) 2030 ft/secHE M48 Shell (HE), Supercharge 1980 ft/secHE M48 Shell (HE), Normal 1520 ft/secHC BI M89 Shell, Smoke 850 ft/secWP M64 Shell Smoke 1980 ft/secAPC M61 Projectile (APCBC/HE-T) 427 ft-tonsHVAP T45 Shot (APCR-T) 473 ft-tonsAP M72 Shot (AP-T) 398 ft-tonsHE M48 Shell (HE), Supercharge 400 ft-tonsHE M48 Shell (HE), Normal 235 ft-tonsHC BI M89 Shell, Smoke 33 ft-tonsWP M64 Shell, Smoke 414 ft-tonsAPC M61 Projectile (APCBC/HE-T) 14,000 yardsAP M72 Shot (AP-T) 10,650 yardsHE M48 Shell (HE), Supercharge 14,000 yardsHE M48 Shell (HE), Normal 11,400 yardsHC BI M89 Shell, Smoke (at 12 degrees elevation) 1,500 yardsWP M64 Shell, Smoke 13,860 yardsHomogeneous steel armor at 30 degrees obliquity

500 yards 1000 yards 1500 yards 2000 yards2.6 inches (66mm) 2.4 inches (60mm) 2.2 inches (55mm) 2.0 inches (50mm)4.6 inches (117mm) 3.8 inches (97mm) 3.1 inches (79mm) 2.5 inches (64mm)3.0 inches (76mm) 2.5 inches (63mm) 2.0 inches (51mm) 1.7 inches (43mm)


2.9 inches (74mm) 2.6 inches (67mm) 2.4 inches (60mm) 2.1 inches (54mm)2.6 inches (66mm) 2.1 inches (53mm) 1.6 inches (41mm) 1.3 inches (33mm)

500

3 inch GUN M7


Weight, Projectile






APC M62 Projectile (APCBC/HE-T)HVAP M93 Shot (APCR-T)AP M79 (AP-T)

Motor Carriages T56 and T57 on a pedestal mount23.15 inches126.85 inches21.5 inches (square base projectiles)128.5 inches (square base projectiles)150.0 inches, 50.0 calibers8.1 inches158.1 inches, 52.7 calibersNone158.1 inches3.000 inches205.585 cubic inches (APC M62), 203.50 cubic inches (HE M42A1)1990 poundsSemiautomatic, vertical sliding wedge28 grooves, uniform right-hand twist, one turn in 40 calibersFixedPercussionAPC M62 Projectile (APCBC/HE-T)HVAP M93 Shot (APCR-T)AP M79 Shot (AP-T)HE M42A1 Shell (HE)HC BI M88 Shell, SmokeAPC M62 Projectile (APCBC/HE-T)HVAP M93 Shot (APCR-T)AP M79 Shot (AP-T)HE M42A1 Shell (HE)HC BI M88 Shell, Smoke38,000 psi15 rounds/minuteAPC M62 Projectile (APCBC/HE-T)HVAP M93 Shot (APCR-T)AP M79 Shot (AP-T)HE M42A1 Shell (HE)HC BI M88 Shell, SmokeAPC M62 Projectile (APCBC/HE-T)HVAP M93 Shot (APCR-T)AP M79 Shot (AP-T)HE M42A1 Shell (HE)HC BI M88 Shell, SmokeAPC M62 Projectile (APCBC/HE-T)HVAP M93 Shot (APCR-T)AP M79 Shot (AP-T)HE M42A1 Shell (HE)HC BI M88 Shell, Smoke (at 12 degrees elevation)Homogeneous steel armor at 30 degrees obliquity

500 yards 1000 yards 1500 yards3.7 inches (93mm) 3.5 inches (88mm) 3.2 inches (82mm)6.2 inches (157mm) 5.3 inches (135mm) 4.6 inches (116mm)4.3 inches (109mm) 3.6 inches (92mm) 3.0 inches (76mm)

27.24 pounds20.77 pounds26.56 pounds24.91 pounds15.40 pounds15.44 pounds9.40 pounds15.00 pounds12.87 pounds7.38 pounds

2600 ft/sec3400 ft/sec2600 ft/sec2800 ft/sec900 ft/sec724 ft-tons753 ft-tons703 ft-tons699 ft-tons41 ft-tons16,100 yards13,100 yards12,770 yards14,780 yards2,000 yards

2000 yards3.0 inches (75mm)3.9 inches (98mm)2.5 inches (64mm)

501

Carriage and MountLength of Chamber (to rifling)Length of RiflingLength of Chamber (to projectile base)Travel of Projectile in BoreLength of BoreDepth of Breech RecessLength, Muzzle to Rear Face of BreechAdditional Length, Muzzle Brake, etc.Overall LengthDiameter of BoreChamber CapacityWeight, Tube (w/o muzzle brake)Weight, Complete (w/o muzzle brake)Weight, Muzzle Brake M2Total WeightType of Breechblock

Rifling

AmmunitionPrimerWeight, Complete Round

Weight, Projectile





Penetration Performance*Range

APC M62 Projectile (APCBC/HE-T)HVAP M93 Shot (APCR-T)AP M79 Shot (AP-T)

76mm GUNS M1A1, M1A1C AND M1A2

Motor Carriages M18, T86, and T86E1 in Mount Ml22.46 inches133.54 inches20.7 inches (square base projectiles)135.3 inches (square base projectiles)156.00 inches, 52.0 calibers7.75 inches163.75 inches, 54.6 calibers11.6 inches, Muzzle Brake M2 on M1A1C and M1A2 only163.75 inches (M1A1), 175.4 inches (M1A1C and M1A2)3.000 inches142.6 cubic inches (APC M62), 140.50 cubic inches (HE M42A1)940 pounds (M1A1)1206 pounds (M1A1C), 1231 pounds (M1A2)62 pounds1268 pounds (M1A1C), 1293 pounds (M1A2)Semiautomatic sliding wedge. Gun mounted so breechblock sidesat 45 degrees in Mount Ml28 grooves, uniform right-hand twist, one turn in 40 calibers(M1A1 and M1A1C) or 32 calibers (M1A2)FixedPercussionAPC M62 Projectile (APCBC/HE-T)HVAP M93 Shot (APCR-T)AP M79 Shot (AP-T)HE M42A1 Shell (HE)HC BI M88 Shell, SmokeAPC M62 Projectile (APCBC/HE-T)HVAP M93 Shot (APCR-T)AP M79 Shot (AP-T)HE M42A1 Shell (HE)HC BI M88 Shell, Smoke43,000 psi20 rounds/minuteAPC M62 Projectile (APCBC/HE-T)HVAP M93 Shot (APCR-T)AP M79 Shot (AP-T)HE M42A1 Shell (HE)HC BI M88 Shell, SmokeAPC M62 Projectile (APCBC/HE-T)HVAP M93 Shot (APCR-T)AP M79 Shot (AP-T)HE M42A1 Shell (HE)HC BI M88 Shell, SmokeAPC M62 Projectile (APCBC/HE-T)HVAP M93 Shot (APCR-T)AP M79 Shot (AP-T)HE M42A1 Shell (HE)HC BI M88 Shell, Smoke (at 12 degrees elevation)Homogeneous steel armor at 30 degrees obliquity

500 yards 1000 yards 1500 yards3.7 inches (93mm) 3.5 inches (88mm) 3.2 inches (82mm)6.2 inches (157mm) 5.3 inches (135mm) 4.6 inches (116mm)4.3 inches (109mm) 3.6 inches (92mm) 3.0 inches (76mm)

24.80 pounds18.91 pounds24.24 pounds22.23 pounds13.43 pounds15.44 pounds9.40 pounds15.00 pounds12.87 pounds7.38 pounds

2600 ft/sec3400 ft/sec2600 ft/sec2700 ft/sec900 ft/sec724 ft-tons753 ft-tons703 ft-tons650 ft-tons41 ft-tons16,100 yards13,100 yards12,770 yards14,200 yards2,000 yards

2000 yards3.0 inches (76mm)3.9 inches (98mm)2.5 inches (64mm)

* Penetration values are for the M1A1 gun. A slight increase for APC was obtained with the M1A2 gun at the longer ranges.

502

90mm GUN M3

Carriage and Mount

Length of Chamber (to rifling)Length of RiflingLength of Chamber (to projectile base)Travel of Projectile in BoreLength of BoreDepth of Breech RecessLength, Muzzle to Rear Face of BreechAdditional Length, Muzzle Brake, etc.Overall LengthDiameter of BoreChamber CapacityWeight, Complete (w/o muzzle brake)Weight, Muzzle Brake M3Total WeightType of BreechblockRiflingAmmunitionPrimerWeight, Complete Round

Weight, Projectile






APC M82 Projectile (APCBC/HE-T) earlyAPC M82 Projectile (APCBC/HE-T) lateHVAP M304 (T30E16) Shot (APCR-T)AP T33 Shot (APBC-T)

Installed experimentally on Motor Carriage M18 in the M36 turretProposed for use on the Motor Carriage T7824.8 inches152.4 inches20.8 inches (boat-tailed projectiles)156.4 inches (boat-tailed projectiles)177.15 inches, 50.0 calibers9.00 inches186.15 inches, 52.5 calibers16.0 inches, Muzzle Brake M3 on late production guns202.2 inches with Muzzle Brake M33.543 inches (90mm)300 cubic inches2300 pounds149.5 pounds2450 poundsSemiautomatic vertical sliding wedge32 grooves, uniform right-hand twist, one turn in 32 calibersFixedPercussionAPC M82 Projectile (APCBC/HE-T) earlyAPC M82 Projectile (APCBC/HE-T) lateHVAP M304 (T30E16) Shot (APCR-T)AP T33 Shot (APBC-T)HE M71 Shell (HE)WP M313 Shell, SmokeAPC M82 Projectile (APCBC/HE-T)HVAP M304 (T30E16) Shot (APCR-T)AP T33 Shot (APBC-T)HE M71 Shell (HE)WP M313 Shell, Smoke38,000 psi8 rounds/minuteAPC M82 Projectile (APCBC/HE-T) earlyAPC M82 Projectile (APCBC/HE-T) lateHVAP M304 (T30E16) Shot (APCR-T)AP T33 Shot (APBC-T)HE M71 Shell (HE)WP M313 Shell, SmokeAPC M82 Projectile (APCBC/HE-T) earlyAPC M82 Projectile (APCBC/HE-T) lateHVAP M304 (T30E16) Shot (APCR-T)AP T33 Shot (APBC-T)HE M71 Shell (HE)WP M313 Shell, SmokeAPC M82 Projectile (APCBC/HE-T) earlyAPC M82 Projectile (APCBC/HE-T) lateHVAP M304 (T30E16) Shot (APCR-T)AP T33 Shot (APBC-T)HE M71 Shell (HE)WP M313 Shell, SmokeHomogeneous steel armor at 30 degrees obliquity

500 yards4.7 inches (120mm)5.1 inches (129mm)8.7 inches (221mm)4.7 inches (119mm)



42.75 pounds43.87 pounds37.13 pounds43.82 pounds41.93 pounds41.93 pounds24.11 pounds16.80 pounds24.06 pounds23.29 pounds23.29 pounds

2650 ft/sec2800 ft/sec3350 ft/sec2800 ft/sec2700 ft/sec2700 ft/sec1174 ft-tons1310 ft-tons1307 ft-tons1310 ft-tons1177 ft-tons1177 ft-tons20,400 yards21,400 yards15,700 yards21,000 yards19,560 yards19,560 yards



503

105mm HOWITZER M3


Weight, Projectile





Penetration PerformanceHEAT M67 Shell (HEAT-T)

RangeHE Ml Shell, Charge 5, w/Concrete PiercingFuze M78 (T105)

Motor Carriage T82 in modified Mount M3A115.0 inches51.0 inches11.4 inches (boat-tailed projectiles)54.6 inches (boat-tailed projectiles)66.0 inches, 16.0 calibers8.3 inches74.3 inches, 17.9 calibersNone74.3 inches4.134 inches (105mm)153.80 cubic inches955 poundsManually operated, horizontal sliding wedge36 grooves, uniform right-hand twist, one turn in 20 calibersSemifixed, variable charge except for HEAT M67PercussionHE Ml Shell (HE), Charge 5 40.46 poundsHEAT M67 Shell (HEAT-T) 36.65 poundsHC BE M84 Shell, Smoke, Charge 5 40.32 poundsWP M60 Shell, Smoke, Charge 5 41.83 poundsHE Ml Shell (HE) 33.00 poundsHEAT M67 Shell (HEAT-T) 29.22 poundsHC BE M84 Shell, Smoke 32.87 poundsWP M60 Shell, Smoke 34.31 pounds28,000 psi8 rounds/minuteHE Ml Shell (HE), Charge 5 1020 ft/secHEAT M67 Shell (HEAT-T) 1020 ft/secHC BE M84 Shell, Smoke, Charge 5 1020 ft/secWP M60 Shell, Smoke, Charge 5 1020 ft/secHE Ml Shell (HE), Charge 5 238 ft-tonsHEAT M67 Shell (HEAT-T) 211 ft-tonsHC BE M84 Shell, Smoke, Charge 5 237 ft-tonsWP M60 Shell, Smoke, Charge 5 247 ft-tonsHE Ml Shell (HE), Charge 5 8295 yardsHEAT M67 Shell (HEAT-T) 8490 yardsHC BE M84 Shell, Smoke, Charge 5 8295 yardsWP M60 Shell, Smoke, Charge 5 8295 yardsHomogeneous steel armor at 0 degrees obliquity

4.0 inches at any rangeConcrete at 0 degrees obliquity

0 yards 500 yards 1000 yards 2000 yards1.0 feet 0.9 feet 0.8 feet 0.7 feet

504

105mm HOWITZER M4


Weight, Projectile





Penetration PerformanceHEAT M67

RangeHE Ml Shell, Charge 7 w/Concrete PiercingFuze M78 (T105)

Motor Carriage M37 in Mount M515.03 inches78.02 inches11.38 inches (boat-tailed projectiles)81.67 inches (boat-tailed projectiles)93.05 inches, 22.5 calibers8.25 inches101.30 inches, 24.5 calibersNone101.30 inches4.134 inches (105mm)153.80 cubic inches1140 poundsManually operated, horizontal sliding wedge36 grooves, uniform right-hand twist, one turn in 20 calibersSemifixed, variable charge except for HEAT M67PercussionHE Ml Shell (HE), Charge 7 42.07 poundsHEAT M67 Shell (HEAT-T) 36.85 poundsHC BE M84 Shell, Smoke, Charge 7 41.94 poundsWP M60 Shell, Smoke, Charge 7 43.77 poundsHE Ml Shell (HE) 33.00 poundsHEAT M67 Shell (HEAT-T) 29.22 poundsHC BE M84 Shell, Smoke 32.97 poundsWP M60 Shell, Smoke 34.31 pounds28,000 psi8 rounds/minuteHE Ml Shell (HE), Charge 7 1550 ft/secHEAT M67 Shell (HEAT-T) 1250 ft/secHC BE M84 Shell, Smoke, Charge 7 1550 ft/secWP M60 Shell, Smoke, Charge 7 1550 ft/secHE Ml Shell (HE), Charge 7 550 ft-tonsHEAT M67 Shell (HEAT-T) 317 ft-tonsHC BE M84 Shell, Smoke, Charge 7 547 ft-tonsWP M60 Shell, Smoke, Charge 7 571 ft-tonsHE Ml Shell (HE), Charge 7 12,205 yardsHEAT M67 Shell (HEAT-T) 8,590 yardsHC BE M84 Shell, Smoke, Charge 7 12,205 yardsWP M60 Shell, Smoke, Charge 7 12,150 yardsHomogeneous steel armor at 0 degrees obliquity

4.0 inches at any rangeConcrete at 0 degrees obliquity


505

4.5 inch GUN M1

Carriage and MountLength of Chamber (to rifling)Length of RiflingLength of Chamber (to projectile base)Travel of Projectile in BoreLength of BoreDepth of Breech RecessLength, Muzzle to Rear Face of BreechAdditional Length, Breech MechanismOverall LengthDiameter of BoreChamber CapacityTotal WeightType of BreechblockRiflingAmmunitionPrimerWeight, Complete Round

Weight, ProjectileMaximum Powder PressureMaximum Rate of FireMuzzle Velocity





HE M65 Shell (HE) w/ConcretePiercing Fuze M78 (T105)

Range

Motor Carriage T16 in Mount Ml30.41 inches156.83 inches25.08 inches162.16 inches187.24 inches, 41.6 calibers6.40 inches193.64 inches, 43.0 calibers7 inches approx.201 inches approx.4.50 inches531 cubic inches4075 poundsStepped thread, interrupted screw, horizontal swing32 grooves, uniform right-hand twist, one turn in 25 calibersSeparate loadingPercussionHE M65 Shell (HE)HE M65 Shell (HE) SuperchargeHE M65 Shell (HE)40,000 psi4 rounds/minuteHE M65 Shell (HE)HE M65 Shell (HE) SuperchargeHE M65 Shell (HE)HE M65 Shell (HE) Supercharge

HE M65 Shell (HE)HE M65 Shell (HE) SuperchargeConcrete at 0 degrees obliquity

0 yards 1000 yards 5000 yards3.8 feet 3.5 feet 2.1 feet

61.963 pounds66.315 pounds54.90 pounds


16,650 yards21,125 yards

10,000 yards1.2 feet

506

155mm HOWITZER Ml

Carriage and MountLength of Chamber (to rifling)Length of RiflingLength of Chamber (to projectile base)Travel of Projectile in BoreLength of BoreDepth of Breech RecessLength, Muzzle to Rear Face of BreechAdditional Length, Breech MechanismOverall LengthDiameter of BoreChamber CapacityTotal WeightType of BreechblockRiflingAmmunitionPrimerWeight, Complete Round

Weight, Projectile






HE M107 Shell (HE) w/ConcretePiercing Fuze M78 (T105)

Range

Motor Carriage M41 (T64E1) in Mount M14 (T19)27.2 inches113.10 inches19.6 inches (boat-tailed projectiles)120.68 inches (boat-tailed projectiles)140.3 inches, 23.0 calibers8.9 inches149.2 inches, 24.5 calibers5 inches approx.154 inches approx.6.102 inches (155mm)725 cubic inches3825 poundsStepped thread, interrupted screw, horizontal swing48 grooves, uniform right-hand twist, one turn in 25 calibersSeparate loadingPercussionHE M107 Shell (HE), Charge M4A1 108.91 poundsHC BE M116 Shell, Smoke, Charge M4A1 109.01 poundsH M110 Shell, Chemical, Charge M4A1 109.11 poundsHE M107 Shell (HE) 95.00 poundsHC BE M116 Shell, Smoke 95.10 poundsH M110 Shell, Chemical 95.20 pounds32,000 psi4 rounds/minuteHE M107 Shell (HE), Charge M4A1 1850 ft/secHC BE M116 Shell, Smoke, Charge M4A1 1850 ft/secH M110 Shell, Chemical, Charge M4A1 1850 ft/secHE M107 Shell (HE), Charge M4A1 2254 ft-tonsHC BE M116 Shell, Smoke, Charge M4A1 2256 ft-tonsH M110 Shell, Chemical, Charge M4A1 2259 ft-tons

HE M107 Shell (HE), Charge M4A1 16,355 yardsHC BE M116 Shell, Smoke, Charge M4A1 16,355 yardsH M110 Shell, Chemical, Charge M4A1 16,374 yardsConcrete at 0 degrees obliquity


507

REFERENCES AND SELECTED BIBLIOGRAPHY

Books and Manuscripts

Appleman, Roy E., "South to the Naktong, North to the Yalu", The U.S. Armyin the Korean War, Office of the Chief of Military History, Washington, D.C., 1961

Barnes, Lieutenant Colonel Gladeon M., "Tank Development Program for the U.S.Army", Army War College, 15 April 1938

Chase, Daniel, "A History of Combat Vehicle Development", unpublished manuscriptJones, Major Ralph E., Rarey, Captain George H., Icks, First Lieutenant Robert

J., "The Fighting Tanks Since 1916", The National Service Publishing Company,Washington, D.C., June 1933

Koyen, Captain Kenneth, "The Fourth Armored Division from the Beach to Bavaria",published 1946

Perkins, Major Norris H. and Rogers, Michael E., "Roll Again Second Armored,The Prelude to Fame 1940-1943", Produced and published for the authors by KristallProductions Ltd, Surbiton, Surrey, England, 1988

Robinett, Brigadier General Paul McDonald, "Armor Command", published 1948Rubel, Colonel George Kenneth, "Daredevil Tankers, The Story of the 740th Tank

Battalion", published 19 September 1945Wagner, William, "Continental, Its Motors and its People", Armed Forces Journal

International with Aero Publishers, Inc., Fallbrook, California, 1983Whiting, Theodore E., Crawford, Richard H., and Cook, Lindsley F., "Statistics:

Procurement", The U.S. Army in World War II, Office of the Chief of MilitaryHistory, Washington, D.C., 9 April 1952

Whiting, Theodore E., Todd, Carrel I., Craft, Anne P., "Statistics: Lend-Lease",The U.S. Army in World War II, Office of the Chief of Military History,Washington, D.C., 15 December 1952

Wilson, Dale E., "Treat 'Em Rough, The Birth of American Armor, 1917-1920",Presidio Press, Novato, California, 1989

Reports and Offical Documents

"Catalogue of Standard Ordnance Items—Tanks and Automotive Vehicles", Officeof the Chief of Ordnance, Washington, D.C., Revised to June 1945

"The Design, Development, and Production of Tanks in World War II", Office ofthe Chief of Ordnance, Washington, D.C., 15 August 1944

"The Employment of Armor in Korea, Volume I", The Armor School, Fort Knox,Kentucky, 1952

"Fire Warfare", Office of Scientific Research and Development, National DefenseResearch Committee, Washington, D.C., 1946

"A Handbook of Ordnance Automotive Engineering—Combat and Tracklaying Vehi-cles", Aberdeen Proving Ground, Maryland, 1 May 1945

"Handbook of the Six-ton Special Tractor Model 1917", War Department, Washington,D.C., July 15, 1918

"New Ordnance Materiel", Office of the Chief of Ordnance, Washington, D.C.,January 1945

"Notes on Materiel, Light Tank T24E1", American Car & Foundry Company,Berwick, Pennsylvania, 28 December 1944

"Notes on the Medium Tank M7", Rock Island Arsenal, Illinois, February 1943"Pacific Area Materiel" Office of the Chief of Ordnance, Washington, DC., July 1945"Record of Army Ordnance Research and Development—Tanks", Office of the Chief

of Ordnance, Washington, D.C., undated"Report of the Fiscal Year 1944-1945, Research and Development Service", Office

of the Chief of Ordnance, Washington, DC., October 1945"Research, Investigation & Experimentation in the Field of Amphibian Vehicles

for the United States Marine Corps", Final Report, Ingersoll Kalamazoo Division,Borg-Warner Corporation, Kalamazoo, Michigan, December 1957

"Summary of Combat Vehicle Development", Office of the Chief of Ordnance,Detroit, Michigan, 1945

"Technical Manual TM9-252, 40mm Automatic Gun Ml (AA) and 40mm Anti-aircraft Gun Carriages M2 and M2A1", War Department, Washington, D.C.,17 January 1944

"Technical Manual TM9-303, 57mm Guns Ml and Mk III (British) and CarriagesMl, M1A1, M1A2, M1A3, and M2", War Department, Washington, D.C.,25 April 1944

"Technical Manual TM9-3Ö7, 75mm Tank Guns M2 and M3 and Mounts Ml, M34,and M34A1", War Department, Washington, D.C., 23 March 1944

"Technical Manual TM9-312, 75mm Gun AN-M5 and Aircraft Mount AN-M9",War Department, Washington, D.C., 16 November 1944

"Technical Manual TM9-313, 75mm Gun M6 and Combination Gun Mount M64",Department of the Army, Washington, D.C., 27 January 1948

"Technical Manual TM9-318, 75mm Howitzers M2 and M3", War Department,Washington, D.C., 14 December 1944

"Technical Manual TM9-324, 105mm Howitzer M4 (Mounted in Combat Vehicles)",Department of the Army, Washington, D.C., August 1950

"Technical Manual TM9-717, 105mm Howitzer Motor Carriage M37", Departmentof the Army, Washington, D.C., 6 October 1947

"Technical Manual TM9-724, Light Tank T9E1", War Department, Washington, D.C,17 November 1943

"Technical Manual TM9-725, Light Tanks", War Department, Washington, D.C.,May 15, 1941

"Technical Manual TM9-726, Light Tank M3", War Department, Washington, D.C.,July 15, 1942

"Technical Manual TM9-727, Light Tanks M3A1 and M3A3", War Department,Washington, D.C., 4 December 1943

"Technical Manual TM9-729, Light Tank T24", War Department, Washington, D.C.,27 June 1944

"Technical Manual TM9-732, Light Tanks M5 and M5A1", War Department,Washington, D.C., 27 November 1943

"Technical Manual TM9-732B, 75mm Howitzer Motor Carriage M8", WarDepartment, Washington, D.C., October 10, 1942

"Technical Manual TM9-744, 155mm Howitzer Motor Carriage M41", WarDepartment, Washington, D.C., 17 September 1947

"Technical Manual TM9-755, 76mm Gun Motor Carriage M18 and Armored UtilityVehicle M39", War Department, Washington, D.C., 25 April 1945

"Technical Manual TM9-757, Twin 40mm Gun Motor Carriage M19", WarDepartment, Washington, D.C., 7 July 1945

"Technical Manual TM9-761, Twin 40mm Gun Motor Carriage M19A1", Departmentof the Army, Washington, D.C., 3 March 1953

"Technical Manual TM9-775, Tracked Landing Vehicles (Armored) Mk 1 (LVT(A)(1)and Mk2 (LVT(A)(2), Tracked Landing Vehicle Mk 2 (LVT(2)", War Department,Washington, D.C., 5 February 1944

"Technical Manual TM9-775, Tracked Landing Vehicle Mk 4 (LVT(4), TrackedLanding Vehicles (Armored) Mk 4 (LVT(A)(4) and Mk 5 (LVT(A)(5)",Department of the Army, Washington, D.C., June 1951

"Technical Manual TM9-1728, Ordnance Maintenance, Power Train for Light TanksM3 and M3A1", War Department, Washington, D.C., April 8, 1942

"Technical Manual TM9-1729B, Ordnance Maintenance, Light Tank M24 and Twin40mm Gun Motor Carriage M19—Transmission, Transfer Unit, Propeller Shaft,Controlled Differential, and Final Drives", War Department, Washington, D.C.,10 February 1945

"Technical Manual TM9-1729C, Ordnance Maintenance, Light Tank M24 and 155mmHowitzer Motor Carriage M41—Tracks, Suspension, Hull, and Turret", WarDepartment, Washington, D.C., 9 September 1947

"Technical Manual TM9-2853, Preparation of Ordnance Materiel for Deep WaterFording", War Department, Washington, D.C., 7 July 1945

508

INDEX

Ad Hoc Reviewing Committee, 377Airborne tanks, 241Allis-Chalmers Manufacturing Company, 213Alligator, 260American Armament Corporation, 217-218, 237American Car & Foundry Company, 120, 134,

153, 164, 186American LaFrance and Foamite Corporation,

52American Steel Foundries, 124, 127Ammunition stowage

Cargo carrier T22, 381Cargo carrier T23, 381Combat car Ml, 124Combat car M1A1, 124Combat car M2, 124Light tank M2A1, 124Light tank M2A2, 124Light tank M2A3, 124Light tank M3, 133Light tank M3A1, 159Light tank M3A3, 170Light tank M22, 253Six-ton tank M1917, 24Wet stowage, 229.50 caliber multi-GMC T77, 34940mm GMC M19, 35475mm HMC M 8, 32875mm HMC T18, 320-32176mm GMC M18, 315105mm HMC M37, 330105mm HMC T82, 332-333155 HMC T64, 3373 inch GMC M5, 2964.2 inch mortar carrier T38, 3454.5 inch GMC T16, 337

Ammunition trailer M28, 354Amphibian Vehicles, 259-293

Alligator, 260Amphibian tractor T33, 264Amphibian tractor T34, 264Amphibian tractor T35, 264Applique armor, 269, 273Christie amphibian tank, 259-260Crocodile, 262CT-3, 268Light tank M3E4, 360-361Light tank M5A1, 364Light tank M24, 364-365Light tank TÍO, 259-260Lightweight LVT(3) and LVT(4), 274LVT(l), 262-264, 399, 428LVT(2), 262-264, 268, 369, 428, 432LVT(3), 268, 272-274,LVT(3)C, 274, 450LVT(4), 268-271, 451LVT(A)(1), 275-281, 370, 429, 432, 434,

493LVT(A)(1) W/M24 turret, 289LVT(A)(2), 264-267LVT(A)(2) w/37mm gun, 432LVT(A)(4), 281-287, 430-434, 450-451,

494LVT(A)(5), 287-288, 450, 494Model A, 272Model B, 272Rocket launcher T54 on LVT(4), 271Water Buffalo, 28976mm GMC T86, 290-29276mm GMC T86E1, 290-292105mm HMC T87, 292-293, 334

Ardennes, 416Armored ambulance, 405Armored cars

M8, 384M20, 384T5, 60T6, 60

Armored utility tractorsT41, 385T41E1, 385

Armored utility vehiclesM39, 308, 380, 387-388, 450T13, 344T16, 344T41, 385-387T41E1, 385-388

B25H bomber, 221Baldwin Locomotive Works, 120Barnes, Major General Gladeon M., 115, 332Bataan, 395-397Borg-Warner Corporation, 264, 268, 272Bougainville, 425-426Bourg, France, 17Brazilian tanks

X1A, converted M3A1, 452X1A1, converted M3A1, 452 British units1st Armoured Division, 3912nd Royal Tank Regiment, 3964th Armoured Brigade, 3946th Airborne Division, 4196th Airborne Reconnaissance Regiment,

4197th Armoured Brigade, 125, 3967th Armoured Division, 3947th Hussars, 3967th Indian Light Cavalry, 4358th Hussars, 3949th Queen's Royal Lancers, 391

Brown, Colonel Rothwell H., 437Buick Division GMC, 115, 304-305, 361Bullet splash protection, 119Burgess-Norton, 336, 384Burma, 125, 396, 435, 437Butaritari Island, 426-427C54 aircraft, 241, 245-246, 255C82 aircraft, 255Cadillac Division GMC, 176, 186, 196, 228,

325, 336-338, 355, 364Canada, tank deliveries, 38-39Canal Defense Light (CDL), 416Cannon

2 pounder, 255, 392, 3946 pounder Mark III, 203-205, 49820mm Hispano-Suiza AN-M2, 35120mm Hispano-Suiza AN-M3, 35220mm Hispano-Suiza Birkigt, 213-21420mm Oerlikon, 214, 35137mm antitank gun, 115-11637mm gun M1916, 11, 17, 20, 24, 26, 31,

41, 46, 5637mm Browning gun Ml, 29437mm gun M3, 118, 143, 29537mm gun M3A1, 14337mm gun M5, 143, 49637mm gun M5E1, 14337mm gun M6, 142-143, 182, 186, 198-199,

260, 275, 392, 394, 425, 49637mm gun M6 w/Littlejohn device, 255,

41937mm gun Puteaux, 2637mm gun semiautomatic, high velocity, 4637mm gun M1924 semiautomatic, 5037mm 44 cal. American Armament,

217-21840mm gun Ml, 353-35440mm gun M2, dual, 354, 49747mm (1.85 inch) gun, 294

57mm gun Ml, 304-30575mm gun M3, 205-206, 212, 219-221,

302-303, 305, 50075mm gun M5, 220-221, 22975mm gun M6, 229-230, 289, 50075mm gun M17 (T21), 230-231, 50075mm gun T13E1, 220, 229, 23775mm gun T22, 35975mm howitzer Ml, 31875mm howitzer M1A1, 319-321, 323-32475mm howitzer M2, 324, 49975mm howitzer M3, 281, 324, 49975mm recoilless rifle T21, 344, 34676mm gun Ml, 219, 30576mm gun M1A1, M1A1C, M1A2, 314,

405, 50281mm mortar T24E1, 25690mm gun M3, 316, 503105mm howitzer M2A1, 329105mm howitzer M3, 332, 504105mm howitzer M4, 292-293, 329,

334-335, 505105mm howitzer T12, 334-335105mm howitzer T51, 334105mm recoilless rifle T19, 346155mm howitzer Ml, 337-338, 340, 5073 inch gun M6, 296, 3853 inch gun M7, 296, 298, 5013 inch gun T9 modified, 295, 2984.2 inch mortar, 3184.2 inch mortar M2, 3444.5 inch gun Ml, 336, 338, 506

Cargo CarriersConverted light tank M3, 424

Converted light tank M3A3, 424Converted light tank M5A1, 424Tl, 41, 381T1E1, 41-42, 381T2, 381T5, 111, 381T22, 354, 381-382T23, 354, 381T22E1, 238, 382T23E1, 238, 354, 382

Cast hull and turret for light tank M2A4, 124C.F. Braun & Company, 379Chaffee, Major General Adna R., 228Chevrolet Division GMC, 343China, 215, 325Chinese-American Provisional Tank Group,

437Chonui, Korea, 438Christie, J. Walter, 31, 55, 60, 241, 259,

317-318Christmas, Brigadier General John K., 115Churchill, Major Tom, 409Clapp, Captain S.H., 30C.L. Best Company, 17 Cletrac MC-2 tractor,

329Cleveland Tractor Company, 51, 295, 329Combat Cars

Ml, 72-79, 82, 86, 88, 115, 124, 319, 472M1A1, 79-80, 473M1A1E1, 79M1A2, 82M1E1, 78-79M1E2, 79, 106M1E3, 81, 320M2, 82-86, 124, 474Tl, 55-59, 63T1E1, 55T1E2, 56T1E3, 59T2, 60-63

509

T2E1, 62T3, 62T4, 63-64, 66, 68T4E1, 64-67, 72T4E2, 67T5, 64, 66, 68-70, 81, 88, 99T5E1, 71, 101T5E2, 72T5E3, 78, 81T5E4, 81T6, 88T7, 88-90

Command vehicle, M8 conversion, 424Computing sights

M7, 353Mark IX, 349T5E1, 349T41, 353T63, 353

Concentric recoil mechanismT19, 220133, 221

Crete, 391Crocodile, 262Crusader operation, 394Culin, Sergeant Curtis, 408"Curse of Scotland", 397, 435Daubin, Captain Freeland A. Jr., 400-401Dien Ben Phu, 451Diesel powered tanks rejected for U.S. Army,

160Douglas Aircraft Company, 241Dummy inflatable light tank, 195Electro-Motive Corporation, 124Engineer vehicles, 370-371

Dozer T4 on M24 light tank, 370-371Dozer M4 on M24 light tank, 370-371LVT(A)(1), 370Mine exploder T2, 371Mine roller, 371

EnginesAmerican LaFrance, 52, 59Beaver, 11Buda, 28Buick series 60, 115, 304-305Cadillac, 145, 172, 178, 200, 225-226, 228,

272, 453Continental A-70, 61Continental R-670, 62, 70, 81, 107Continental W-670, 81, 88, 99, 107, 116,

120, 127, 139, 153, 157, 171,200, 263Continental W-670-9, 298Continental W-670-12, 298Continental R-950, 171Continental R-975, 206, 208, 211Continental R-975-C1, 298, 307, 314Continental R-975-C4, 314Cummins, 55Cummins HBS-600, 144, 202Cunningham, 40, 46, 51-52Detroit Diesel 6V-53T, 453Ford GAA, 212Ford, GAN, 212Ford Model A, 54Ford Model T, 11, 14Ford V-8, 111-112Franklin, 30General Motors 6-71 diesel, 105General Motors V-4-223 diesel, 110Guiberson T-570-1, 81Guiberson T-1020, 78-79, 82, 99, 109, 120,

127, 139, 153Guiberson T-1071, 202Hercules, 296Hercules DRXBS, 200Hercules RXLD, 217

Hercules WXLC-3, 215Hudson, 16La Salle V8, 54, 318Liberty V-12, 56, 59Lycoming O-435T, 241, 248, 252Menasco, 111Starters, 139Wright R-975, 88, 199, 204, 206, 208, 211

England, 407-408Everglades, 260Experimental Mechanized Force, 42Firestone Tire and Rubber Company, 320-321Fisher Body Division CMC, 219Flame thrower, portable M1A1, 372-373Flame thrower tanks, 372-380

E7-7 flame thrower, 377-378E7-LVT(A)(1), 378E8 flame thrower, 379E9 flame thrower, 380E14-7R2, 378-379Iroquois flame thrower, 380Light tank M3A1, 372-375Light tank M5A1, 377-380LVT w/flame thrower, 374, 376LVT (4), 376LVT(A)(1), 376, 378Mark I Navy, 376-377NDRC, 377Q flame thrower, 377Ronson flame thrower, 374, 376Satan, 374-375T65 SP flame thrower, 38043rd Chemical Laboratory Company, 374,

376Flotation equipment, 360-364

Berg device, 361Collapsible pontons, 361Ritchie device, 361T7 device, 334, 361-363

Food Machinery Corporation, 260, 268Ford Motor Company, 11-16, 54, 111-112, 212,

361Fording equipment, 365-367

Light tank M3, 365Light tank M3A1, 365-366Light tank M3A3, 365-366Light tank M5, 365, 367Light tank M5A1, 365, 367Light tank M24, 365, 36776mm GMC M18, 365105mm HMC M37, 365155mm HMC M41, 365

French tanksM24 light tank w/90mm gun, 452

Fuel SystemsJettison fuel tanks, 140-141Light tank M3, 140-141Light tank M3A1, 157Light tank M3A3, 162, 169Light tank M22, 248Light tank M24, 226, 228

Gatehouse, Brigadier A.H., 394Gela, Sicily, 402General Motors Corporation, 105, 110, 115,

145, 176, 186German tanks

Panther, 5, 409PzKw III, 400-401PzKw IV, 400-402 German unitsBattle Group Stephan, 3945th Panzer Regiment, 39421st Panzer Division, 394190th Panzer Battalion, 400

Goodrich, 81Graham-Paige, 264Great Britain, 228, 246, 325Greece, 391

Guadalcanal, 125, 372, 376, 397-399, 424Guiberson, 78-79, 81-82, 99, 109, 139, 153, 202Half-track personnel carrier M3, 329, 347Hamilcar glider, 255, 419Hanes, Captain Donald, 395Hellcat, 308Integrated fighting compartment, 142, 159, 170International Harvester Company, 206Irzyk, Lieutenant Colonel Albin F., 409Iwo Jima, 433James Cunningham, Son and Company, 40-41,

45, 318Japanese units

4th Tank Regiment, 395Jettison fuel tanks, 140-141Korea, 388, 438-450Koyen, Captain Kenneth, 409Kwajalein Atoll, 429Leach, Colonel James H., 5, 396Lend-Lease Program, 125, 129, 153, 164, 192,

215, 228, 246, 325, 391, 419, 464Leyte, 376Lima Locomotive Works, 378Littlejohn device, 255, 419Low height drive shaft, 81-82Luzon, 378, 396Lycoming, 241MacArthur, General of the Army Douglas,

395Machine guns

.30 caliber Browning tank, 11, 21

.30 caliber Colt, 217-218

.30 caliber Marlin tank, 11, 20, 24-25

.30 caliber M1919A4, 122, 263

.50 caliber, 56, 59-60, 115, 214, 231

.50 caliber MG HB M2, 263, 281, 328"Mae West" M2A2 light tank, 5Magnetic mines, Japanese Type 99, 171Makin Atoll, 426-427Malaya, 396Mariana Islands, 374Marmon-Herrington Company, 145, 215-218,

241-242, 245-246, 334, 383Marshall, General of the Army George C,

395Marthille, France, 409Massey-Harris Company, 176, 186, 228Maxwell Motor Company, 17Middle East, 125, 391Miller, Lieutenant Colonel Ernest B., 395Modernization of light tanks and combat cars,

82Moratai, 431Morin, Lieutenant Ben R., 395Mortar carriers

81mm mortar carrier M4, 34281mm mortar carrier M4A1, 34281mm mortar carrier M21, 34281mm mortar carrier T27, 342-34381mm mortar carrier T27E1, 3424.2 inch mortar carrier T21, 3424.2 inch mortar carrier T29, 342-3444.2 inch mortar carrier T35, 3444.2 inch mortar carrier T38, 344-345

Motor CarriagesCombination GMC M15, 347, 353Combination GMC M15A1, 347, 353Combination GMC T81, 353.50 caliber multi-GMC M13, 347.50 caliber multi-GMC M14, 347.50 caliber multi-GMC M16, 347.50 caliber multi-GMC M17, 347.50 caliber multi-GMC T77, 348-350.50 caliber multi-GMC T77E1, 350.50 caliber quad mount on M3 light tank,

34720mm multi-GMC T85, 352

510

20mm multi-GMC T85E1, 35237mm GMC M6, 29537mm GMC T42, 303-30440mm GMC M19, 238, 346, 354-356, 359,

382, 446-447, 48740mm GMC M19A1, 356-358, 446, 48740mm GMC T65, 351, 353-354, 38140mm GMC T65E1, 351, 354-355, 38257mm GMC T49, 298, 30475mm gun M1916 on Holt tractor, 31775mm gun M1920 on Christie chassis, 31775mm gun M1920 on Holt tractor, 31775mm GMC M3, 29575mm GMC T29, 30275mm GMC T67, 298, 305-30775mm GMC T67 w/76mm gun, 305-30675mm gun T22 on M19 chassis, 35975mm howitzer on Holt tractor, 31875mm HMC M8, 220, 321-328, 403, 417,

420-421, 451, 48875mm HMC M8 w/75mm gun M3,

302-30375mm HMC Tl, 54, 318-31975mm HMC T3, 31975mm HMC T17, 32075mm HMC T18, 320-32275mm HMC T30, 321, 40375mm HMC T41, 32275mm HMC T47, 321-32575mm recoilless rifles on M19 chassis, 34676mm GMC M18 (T70), 290-291, 298,

303, 305, 307-316, 334, 361, 385,405-406, 422-423, 434, 489

76mm GMC M18 evaluation as a lighttank, 315

76mm GMC M18 w/90mm M36 turret,316

76mm GMC T86, 290-292, 31676mm GMC T86E1, 290-292, 31690mm GMC M36, 295, 31690mm GMC T78, 316105mm HMC M7, 329105mm HMC M37, 238, 330-331, 344-345,

446, 448, 491105mm HMC M37 test w/recoilless rifle

and mortar, 344, 346105mm HMC T9, 329105mm HMC T19, 329105mm HMC T76, 329-330105mm HMC T82, 332-333, 490105mm HMC T87, 292-293, 334105mm HMC T88, 292, 334-335, 363105mm HMC T88E1, 334105mm howitzer M1920 on Christie chas-

sis, 317105mm howitzer M1920 on Holt tractor,

317105mm recoilless rifles on M19 chassis,

346155mm Christie GMC, 317-318155mm GMC Mark II, 317155mm HMC M41, 238, 338-341, 382,

446, 449, 492155mm HMC T64, 337, 354, 381155mm HMC T64E1, 338, 3823 inch GMC M5 (Tl), 2963 inch GMC M10, 295-2963 inch GMC Tl, 295-2963 inch GMC T20, 2983 inch GMC T50 concepts, 297-2983 inch GMC T56, 298-3013 inch GMC T57, 298, 3014.2 inch MMC T1, 41, 318, 3424.2 inch MMC T2, 3424.5 inch GMC T16, 329, 336-339, 354,

3814.5 inch GMC T16E1, 338, 382

8 inch Christie HMC, 317Napco International, Inc., 453National Defense Act of 1920, 55National Defense Research Committee

(NDRC), 290, 360, 377New Caledonia, 372New Georgia, 425-426New Guinea, 398, 425-426Noise reduction program, 144-145Normandy, 408Norwegian tanks

NM116 converted M24, 452-453Okinawa, 434Ozereyka Bay, 419Panoramic sights

M12, 292M12A5, 328M1917, 319

"Panther Pups" M24 light tanks, 417Peleliu, 376, 431-432Pershing, General John J., 9Philippine Islands, 430Pioneer Tractor Company, 10Pontiac Division GMC, 242Power traverse system, 142-143, 152, 176, 245,

287Pratt, Major General D.H., 241Production data, 464Protected vision slots, 18, 135, 137, 158, 217Protective Mobilization Plan, 82Protectoscopes, 135, 137, 158, 321Quad Cities Tank Arsenal, 206Range finders

Simrad LV3, 453Ranson, Sergeant Ellsworth, 409Rarey, Captain George H., 31Read, Brigadier General George, 424"Rebel's Roost" M24 light tank, 440, 442Recoilless rifle and mortar test on M37, 344,

346Reconnaissance vehicles

T8, 383-384T8E1, 383-384T18 light tractor, 383

Recovery vehiclesTRY T6, 368TRY T6E1, 368-369LVT(2) RV, 369

Rhine River crossing, 246, 419Robinett, Brigadier General Paul McD., 400Rocket launcher T54 on LVT(4), 271Roebling, Donald, 260Saipan, 375, 430Siglin, Major Carl, 400-401"Skysweeper" AA gun, 359Smoke apparatus, 35Smoke mortar, 2 inch M3, 230Soviet tanks

T34/85, 5, 438, 440Soviet Union, 228, 325, 419Sparkman & Stephens, 290, 360Sprimont, Belgium, 416Stabilizers, 142, 152, 158, 176, 245, 287,

361Standard Oil Development Company, 377,

380Steering

Clutch-brake, 28, 41, 51Controlled differential, 51, 66, 68

Stilwell, General Joseph, 437St. Louis Car Company, 264Straussler flotation equipment, 145, 360Stuart, General J.E.B., 129Studebaker Corporation, 360Sullivan, General Gordon, 5Summers, Colonel Harry, 5Suspensions

Christie, 31, 55Combat car Ml, 72Combat car M1E2, 79Combat car Tl, 56, 59Combat car T2, 61Combat car T5E4, 81Combat car T6, 88Combat car T7, 88Convertible wheel or track, 31, 55Horizontal volute spring, 115, 117, 199Kegresse-Hinton, 30Light tank M5, 181Light tank M24, 225, 228Light tankTl, 41Light tank T1E1, 41Light tank T1E2, 46Light tank T1E3, 49Light tank T1E4, 50Light tank T1E6, 53Link type, 41LVT(2), 263, 266LVT(3), 272Medium tank M7, 208Rubber torsion spring, 81, 111SdKfz 8, 238Semielliptic spring, 50Six-ton tank M1917, 29Skeleton tank, 10Spaced out, 196, 240Three-ton, M1918, 12, 14Torsilastic, 263, 266, 272Trailing idler, 81, 105, 110Vickers, 91Volute spring, 68, 91, 111, 115, 199

Tanks, BritishMark V, 9Mark V Star, 9Medium D, 259Vickers Armstrong light tank, 50

Tanks, FrenchRenault FT17, 9-11, 14, 17, 33

Tanks, U.S. builtAirborne tanks, 241Anglo-American Mark VIII, 9Christie amphibian tank, 112, 259-260Christie M1928, 55, 60Christie M1931, 55, 59Ford three-ton tank, 11-15, 111Grant medium tank, 394"Honey" light tank M3, 391, 394Light tank concepts, 115-117Light tank Ml (T1E1), 41Light tank M1A1, 86Light tankM!A2, 86Light tank M2A1, 82, 94-98, 115, 124,

294, 469Light tank M2A2, 5, 82, 98-106, 115,

124, 470Light tank M2A2E1, 99Light tank M2A2E2, 105Light tank M2A2E3, 105Light tank M2A3, 106-110, 118-119, 124,

471Light tank M2A3E1, 109Light tank M2A3E2, 109Light tank M2A3E3, 110Light tank M2A4, 110, 118-127, 142-143,

146, 199, 371, 396-397, 475Light tank M3, 127-153, 298, 302, 320,

336, 347, 360, 371, 374, 391-401,419, 435, 476, 478

Light tank M3 (diesel), 127-129, 477Light tank M3A1, 142-143, 152-162, 164,

172, 366, 374, 376, 399, 402,418-419, 425-427, 429, 435, 479

Light tank M3A1 (diesel), 153, 160Light tank M3A1E1, 160

511

Light tank M3A2, 160Light tank M3A3, 162-171, 176, 186,

298, 366, 405, 437, 480Light tank M3A3E1, 171, 174Light tank M3A3E2, 171Light tank M3E1, 144-145Light tank M3E2, 145, 172-174Light tank M3E3, 145, 174-176Light tank M3E4, 145, 360-361Light tank M4, 174, 361Light tank M5, 143, 145, 160, 162, 172,

176-186, 192, 220, 225, 227, 298,322, 326, 336, 351, 361, 367,374, 381, 400, 402, 407, 413, 481

Light tank M5A1, 171, 186-198, 220-221,225, 227-228, 332, 342, 364, 367,377-380, 383-384, 403-410,412-417, 419, 428-430, 438, 451,482

Light tank M5A1 (remanufactured), 195Light tank M5A1E1, 196-197Light tank M22 (T9E1), 246-256, 419,

484Light tank M24 (T24), 5, 192, 220-237,

329, 349, 351, 354, 364-365, 367,370-371, 384, 391-394, 405, 409,416-419, 438-446, 451-454, 485

Light tank Tl, 40Light tank T1E1, 41-45, 49-51, 62, 318, 468Light tank T1E2, 45-49Light tank T1E3, 49Light tank T1E4, 50-51Light tank TIES, 51Light tank T1E6, 52-53Light tank T2, 70, 91-93, 111Light tank T2E1, 93-94, 101Light tank T2E2, 98, 101Light tank T2E3, 101Light tank T3, 111Light tank T3E1, 111Light tank T3E2, 111Light tank T3E3, 111Light tank T4, 111Light tank T5, 111Light tank T6, 115-117Light tank T7, 124, 144, 199-203, 220, 336Light tank T7E1, 199-200, 202Light tank T7E2, 199-200, 202-206, 220Light tank T7E3, 200, 202, 212Light tank T7E4, 200, 202, 212Light tank T7E5, 205-206, 483Light tank T9, 242-245, 303, 383Light tank T9E1, 246-256Light tank T9E2, 256Light tank TÍO, 260-261Light tank T13, 213-214Light tank T16, 215-216Light tank T21, 220Light tank T24, 220-237, 316, 348, 354,

382Light tank T24E1, 237-240, 486Light tank w/heavy armor, 115Locust, 246, 255, 419Mark I, Ford 3 man, 16Mark II, 16Marmon-Herrington, 112Marmon-Herrington CTLS-4TAC, 215-216Marmon-Herrington CTMS-1TB1, 217Marmon-Herrington MTLS-1C14, 218-219Medium tank M3, 400, 419, 426Medium tank M4, 302Medium tank M4A3, 207, 212, 231Medium tank M7, 206-212, 219, 483Medium tank M7E1, 212Medium tank M7E2, 207Medium tank M26, 5, 231, 316, 441Medium tank M46, 5

Medium tank T3, 55-56, 59Medium tank T4, 64Medium tank T4E1, 69Medium tank T5, 105NM116 converted light tank M24, 452-453"Rebel's Roost" light tank M24, 440, 442Sherman tank, 5, 409, 416, 441Six-ton tank M1917, 17-30, 33-39, 454, 466Six-ton tank M1917A1, 30-33Six-ton tank M1917, signal, 17, 35Six-ton tank M1917, smoke, 35Six-ton special tractor M1917, 17-30, 33-39Skeleton tank, 10-11Stuart I, 129, 391-394Stuart II, 129Stuart III, 153, 435Stuart IV, 153Stuart V, 164, 410-411Stuart VI, 192, 410Stuart Hybrid, 142-143, 436Three-ton special tractor M1918, 11-15, 407X1A converted light tank M3A1, 452

Tank destroyers, 294-316Tarawa Atoll, 376, 428-429Task Force Smith, 5Tirnkin Bearing Company, 109Tinian, 375Tracks

Burgess-Norton, 196, 336, 384Combat car Ml, 72Combat car Tl, 59Combat car T2, 61Combat car T6, 88Combat car T7, 88Diehl, 453Extended end connectors, 197Ford three man Mark I tank, 16Ford three-ton tank, 12Goodrich rubber band T27, 81Grousers, canvas, 292Grousers, 28 inch, 232-233, 364Hagglund, 453Light tank T1E1, 41Light tank T1E2, 46Light tank T1E4, 50LVT(2), 263, 266LVT(3), 272Marmon-Herrington, 112Offset tracks, 197SdKfz 8, 238T16 series, 91, 196T36E1, 260T36E6, 336T64, 196T72, 228, 232-233T72E1, 232-233, 364T82, 316T85E1, 233, 453T86, 240T87, 24076mm gun motor carriage M18, 31476mm gun motor carriage T86, 290

Track Development ChassisTl, 54T2, 54, 318

TransmissionsAllison MT-653, 453Constant mesh sliding gear, 79, 109Cotta sliding gear, 28Modified, 61Detroit Gear, 200Ford planetary, 11-12, 14, 16Hydramatic, 145, 172, 178, 180, 199-200,

225-226, 272Light tank M3, 139Livermore, 202Selective sliding gear, 28, 61

Spicer, 171, 204, 206, 211, 237-238, 263Synchromesh, 105-106, 109-110, 115, 117Timken Electrogear, 109Torqmatic, 307Twin Disc torque converter, 304Warner Gear, 199, 204

Tuck, Major William R. 400Turret trainer, light tank M5A1, 198United Shoe Machinery, 348United States Army units

Armored division organization, 407Provisional Tank Group, 395Tank battalion organization, 4071st Armored Division, 400, 402-403, 4071st Armored Regiment, 4002nd Armored Division, 5, 400, 402, 4073rd Armored Division, 407-408, 4154th Armored Division, 4094th Light Tank Company, 425th Armored Division, 4146th Armored Division, 4247th Infantry Division, 4298th Tank Battalion, 409llth Light Tank Company, 5, 39613th Armored Group, 37813th Armored Regiment, 40015th Cavalry, 41517th Cavalry, 41417th Ordnance Company, 39521st Infantry, 438, 44024th Infantry Division, 440XXIV Corps, 37624th Reconnaissance Company, 440, 44225th Infantry Division, 37825th Reconnaissance Squadron, 443-44426th Cavalry (PS), 39526th Infantry, 40227th Infantry Division, 42630th Infantry Division, 41734th Tank Battalion, 41443rd Cavalry, 41743rd Chemical Laboratory Company, 374,

37670th Tank Battalion, 40278th Heavy Tank Battalion, 5, 43882nd Airborne Division, 417192nd Tank Battalion, 5, 395193rd Tank Battalion, 5, 396194th Tank Battalion, 5, 395708th Amphibian Tank Battalion, 429709th Tank Battalion, 412740th Tank Battalion, 416-417827th Tank Destroyer Battalion, 422

United States Marine Corps, 112, 125, 2591st Marine Division, 3762nd Marine Division, 375, 4293rd Marine Division, 3724th Marine Division, 375, 4294th Marine Raider Battalion, 4254th Marine Tank Battalion, 429

U.S. Wheel Tracklayer Corporation, 60V-40 tractor, 213Vietnam, 451Vision blocks, 281Vision cupola, 229Wainwright, Lieutenant General Jonathon, 395Water Buffalo, 289Waters, General John K., 400Weaver, Brigadier General James R.N., 395Welded face-hardened armor, 129, 141Wet stowage, 229Welded versus riveted turrets, 129Western Desert, 391Wickford, Lieutenant Colonel Theodore F., 395Van Dorn Iron Works, 17Yap, 376 York Safe and Lock Company, 344

512