What did the selective service act mean for the us troops?

The Selective Service Act, enacted in 1917 during World War I, mandated that American men aged 21 to 30 register for military service. This law allowed the U.S. government to draft soldiers to bolster its forces, significantly increasing troop numbers. The act marked a shift from voluntary enlistment to conscription, ensuring that the military could meet the demands of the war. It played a crucial role in mobilizing the American military and shaping the U.S. military experience during the war.