Conscription

From Conservapedia

Conscription is a term for creating a compulsory army. Several countries employ conscription in order to keep their military strong including Israel, South Korea,Taiwan, and Switzerland. The United States has employed conscription, known as "the draft" during times of war, though not since the Vietnam War. In the United States during the Vietnam era, the draft was performed by lottery. All American males must register for the draft when they reach eighteen years of age.