What did the selective act do for the U.S army?

The Selective Service Act, enacted in 1917, authorized the U.S. government to draft soldiers into the military during World War I. It required men aged 21 to 30 to register for military service, expanding the Army's manpower significantly. This act enabled the U.S. Army to quickly mobilize and deploy forces to support the Allies in the war, ultimately contributing to the Allied victory. The draft system established by this act laid the groundwork for future conscription during subsequent conflicts.