History of the United States during WW2
The military history of the United States during WW2 began with the 7 December 1941 attack on Pearl Harbor and ending with the 2 September 1945 surrender of Japan.
During the first two years of WW2, the United States had maintained formal neutrality, which was officially announced in the Quarantine Speech delivered by US President Franklin D. Roosevelt in 1937. While officially neutral, the US supplied Britain, the Soviet Union, and China with war materiel through the Lend-Lease Act signed into law on 11 March 1941, and deployed the US military to replace the British forces stationed in Iceland.
Following the "Greer incident" (USS Greer was a United States Navy destroyer and became the first US Navy ship to fire on a German ship, three months before the United States officially entered WW2) Roosevelt publicly confirmed the "shoot on sight" order on 11 September 1941, effectively declaring naval war on Germany and Italy in the Battle of the Atlantic.
During the first two years of WW2, the United States had maintained formal neutrality, which was officially announced in the Quarantine Speech delivered by US President Franklin D. Roosevelt in 1937. While officially neutral, the US supplied Britain, the Soviet Union, and China with war materiel through the Lend-Lease Act signed into law on 11 March 1941, and deployed the US military to replace the British forces stationed in Iceland.
Following the "Greer incident" (USS Greer was a United States Navy destroyer and became the first US Navy ship to fire on a German ship, three months before the United States officially entered WW2) Roosevelt publicly confirmed the "shoot on sight" order on 11 September 1941, effectively declaring naval war on Germany and Italy in the Battle of the Atlantic.
