The draft was increased by Selective Service System, who finally gathered 19 million men.
By recruiting civilians, what did the military's size increase?
The Federal Government was permitted to temporarily augment the military through conscription thanks to the Selective Service Act, which Congress passed on May 18, 1917. The law finally required that all males between the ages of 21 and 45 register for military service.
How did the Selective Service System help the United States to be able to field millions of men for World War One?
The Selective Service Act, which Congress drafted and Wilson approved on May 18, 1917, served as a vehicle for achieving this. Between the ages of 21 and 30, the law mandated that all men in the United States enlist in the military. To avoid being drafted into the military, roughly 10 million boys nationwide enrolled quickly.