The selective service act is the requirement of all young men to register by the time they turn 18, with selective service, in the event of a draft.

The Selective Service Act is a law in the United States that requires all male citizens and immigrants aged 18 to 25 to register with the Selective Service System. In the event of a national emergency, this system can be used to draft individuals into the military.

The Selective Service Act, although the definition you give of it is a bit misleading.

In 1917, the selective service act was passed. The selective service was the draft. In the United States, the young men felt it was against the 13th amendment.

according to the selective service act the order in which men were called to service would be determined buy?