Page "Conscription Crisis of 1944" Paragraph 9

Conversely, the United States, which did not enter the war until December 7, 1941, following the Attack on Pearl Harbor, instituted the Selective Service Act on September 14, 1940 and extended it by a single vote the following year.

The law was not controversial during the war, however, and draftees served under the same conditions as enlistees.