United States Armed Forces
The U.S. Armed Forces are one of the largest military forces in terms of personnel. It draws its personnel from a large pool of paid volunteers. Although conscription has been used in the past, it has not been used since 1973, but the Selective Service System retains the power to conscript males, and requires that all male citizens and residents residing in the U.S. between the ages of 18–25 register with the service. On February 22, 2019, however, a federal district court ruled that registering only males for Selective Service is unconstitutional; the case is now pending appeal.
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