In the early summer of 1941, President Franklin D. Roosevelt requested that the U.S. Congress prolong the service duration for draftees from twelve months to a total of thirty months, with the possibility of additional time if he deemed it necessary for national security. On August 12, the extension was narrowly approved by a one-vote margin in the United States House of Representatives.

Source: Fleeson, Doris. “Hull Joins Fight For Longer Draft; Passage Seen in Close Vote Today.” Daily News, 12 Aug. 1941, p. 10. https://www.newspapers.com/article/daily-news/134180149/