Final answer:
The Conscription Act was a law that required men to register for the draft and be available for military service during times of war. It was enacted during the Civil War and World War I, extending soldiers' service and forcing eligible men to be available for military service.
Step-by-step explanation:
The Conscription Act was a law passed by Congress that required men to register for the draft and be available for military service during times of war. It was first enacted in 1863 during the Civil War in the United States and expanded in 1917 and 1918 during World War I. The age range and requirements varied in different versions of the act, but generally, it extended soldiers' service and forced eligible men to be available for military service.