The Attack on the Pearl Harbor naval base by Japan.
The Pearl Harbor
Pearl Harbor attack was done by Japanese forces on December 7, 1941. The attack led to President Franklin D. Roosevelt declaring war on Japan.
The attack resulted in devastation and death. For the first time in the history of America, the American people were united in their determination to go to war. As a result Americans in large number enrolled in the armed services.
Therefore, The Attack on the Pearl Harbor naval base by Japan led to the peak of 3,030,407 enlistments for US military service in 1942.
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