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During World War II, the United States Army underwent significant changes and played a crucial role in the conflict, fundamentally shaping its purpose and structure. The primary objective of the U.S. Army during this period was to mobilize and deploy forces to combat Axis powers, including Germany, Italy, and Japan.
A military service number of the Regular Army. Service numbers were used by the United States Army from 1918 until 1969. Prior to this time, the Army relied on muster rolls as a means of indexing enlisted service members while officers were usually listed on yearly rolls maintained by the United States War Department.
The following are the original service numbers which were first issued to United States military personnel: [2] R-1: Arthur Crean – First service number of the United States armed forces; O-1: John J. Pershing – First officer service number of the United States Army; 100 00 01: Clayton Aab — First enlisted service number of the United ...
The Army Service Forces was one of the three autonomous components of the United States Army during World War II, the others being the Army Air Forces and Army Ground Forces, created on 9 March 1942. By dividing the Army into three large commands, the Chief of Staff , General George C. Marshall , drastically reduced the number of officers and ...
The 1st through 25th Infantry Divisions, excepting the 10th Mountain Division, were raised in the Regular Army or the Army of the United States prior to American involvement in World War II. Because of funding cuts, in September 1921, the 4th through 9th Infantry Divisions were mostly inactivated.
This is a list of formations of the United States Army during the World War II.Many of these formations still exist today, though many by different designations. Included are formations that were placed on rolls, but never organized, as well as "phantom" formations used in the Allied Operation Quicksilver deception of 1944—these are marked accordingly.
While the United States Armed Forces is an all-volunteer military, conscription through the Selective Service System can be enacted at the president's request and Congress' approval, with all males ages 18 through 25 living in the United States required to register with the Selective Service. [240]
The military history of the United States during World War II covers the nation's role as one of the major Allies in their victory over the Axis powers. The United States is generally considered to have entered the conflict with the 7 December 1941 surprise attack on Pearl Harbor by Japan and exited it with the surrender of Japan in 2 September ...