The
Selective Training and Service Act of 1940, also known as the
Burke-Wadsworth Act, , was the first peacetime
conscription in United States history. This Selective Service Act required that men between the ages of 21 and 35 register with local draft boards. Later, when the U.S. entered
World War II, all men aged 18 to 45 were made subject to military service, and all men aged 18 to 65 were required to register.