In the United States, military conscription, commonly known as the draft, has been employed by the U.S. federal government in six conflicts: the American Revolutionary War, the American Civil War, World War I, World War II, the Korean War, and the Vietnam War. The fourth incarnation of the draft came into being in 1940, through the Selective Training and Service Act; this was the country's first peacetime draft.[1]
From 1940 until 1973, during both peacetime and periods of conflict, men were drafted to fill vacancies in the U.S. Armed Forces that could not be filled through voluntary means. Active conscription in the United States ended in 1973, when the U.S. Armed Forces moved to an all-volunteer military. However, conscription remains in place on a contingency basis; all male U.S. citizens, regardless of where they live, and male immigrants, whether documented or undocumented, residing within the United States, who are 18 through 25 are required to register with the Selective Service System.[2][3][4]
U.S. federal law continues to permit compulsory conscription of men between the ages of 17 and 44 who are, or who have made a declaration of intention to become, U.S. citizens, and women in certain health care occupations, for militia service pursuant to Article I, Section 8 of the United States Constitution and 10 U.S. Code § 246.[5][6][7]
Conscription has faced strong opposition throughout American history from prominent figures like Daniel Webster, who stated, "A free government with an uncontrolled power of military conscription is the most ridiculous and abominable contradiction and nonsense that ever entered into the heads of men."[8]