USA HISTORY

Detailed explanation-1: -On May 18, 1917, Congress passed the Selective Service Act, which authorized the Federal Government to temporarily expand the military through conscription. The act eventually required all men between the ages of 21 to 45 to register for military service.

Detailed explanation-2: -On September 16, 1940, the United States instituted the Selective Training and Service Act of 1940, which required all men between the ages of 21 and 45 to register for the draft.

Detailed explanation-3: -The Selective Service Act of 1917 or Selective Draft Act ( Pub. L. 65–12, 40 Stat. 76, enacted May 18, 1917) authorized the United States federal government to raise a national army for service in World War I through conscription.

Detailed explanation-4: -To that end, Congress passed the Selective Service Act, which Wilson signed into law on May 18, 1917. The act required all men in the U.S. between the ages of 21 and 30 to register for military service. Within a few months, some 10 million men across the country had registered in response to the military draft.

Detailed explanation-5: -Senator Henry Wilson, chairman of the Committee on Military Affairs, sponsored the Conscription Act of 1863, which established the first national draft system and required registration by every male citizen and immigrant who had applied for citizenship between the ages of 20 and 45.