In what year did congress pass the selective service act, which required all male u. s. citizens to register for the military draft upon turning eighteen?

To that end, Congress passed the Selective Service Act, which Wilson signed into law on May 18, 1917. The act required all men in the U.S. between the ages of 21 and 30 to register for military service. Within a few months, some 10 million men across the country had registered in response to the military draft.

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