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.