U.S. Army In WWII

The military history of the United States in World War II covers the war against Germany, Italy, Japan and starting with the 7 December 1941 attack on Pearl Harbor. During the first two years of World War II, the United States had maintained formal neutrality as made officially in the Quarantine Speech delivered by U.S. President Franklin D. Roosevelt in 1937, while supplying Britain, the Soviet Union, and China with war material through the Lend-Lease Act which was signed into law on 11 March 1941, as well as deploying the U.S. military to replace the British invasion forces in Iceland.

Amerikanischen Armee im Zweiten Weltkrieg

Ejército Americano en la Segunda Guerra Mundial

Armée Américaine à la Seconde Guerre mondiale

美军在二战中的照片和视频

американской армии во Второй мировой войне

During World War II about 16.000.000 personnel served in the U.S. Military: approximately 11.200.000 in the Army, 4.200.000 in the Navy, and 660.000 in the Marine Corps. In March 1942, the Army was re-organized into three forces: the Army Ground Forces (AGF), Army Air Forces (AAF), and the Army Service Forces (ASF),the latter included the corps of engineers, quartermaster corps, medical corps, signal corps, chemical warfare service, ordnance department, and the military police corps.
By 1945, operating strength reached 8.3 million. But only 2.75 million, or a third, were in the AGF. About 1.200.000 personnel were assigned to divisions and 1.500.000 to non-divisional units. Non-divisional forces included service units and some additional combat troops not initially assigned to a division. Winston Churchill described the U.S. Army during the Second World War a “prodigy of organization… an achievement which soldiers of every other country will always study with admiration and envy.”