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At 7:55 a.m. on Sunday, December 7, 1941, 353 Japanese planes launched a surprise attack on the American naval base at Pearl Harbor.

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An American cryptologist (decoder) intercepted a Japanese message asking about American fleet movement out of Pearl Harbor 2 days prior to the attack. Ignored Early on December 7, a radar operator noticed a large group of planes heading towards Pearl Harbor Ignored

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2,403 US Personnel killed 68 Civilians killed 19 Navy ships destroyed or damaged (including 8 battleships) All 4 aircraft carriers survived (had set out to sea on a test-run earlier that morning and werent discovered by the Japanese)

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On December 8, FDR asked Congress for a declaration of war against Japan in what would become one of the most famous speeches in American history. The United States officially declared war on Japan on December 11, 1941.

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