person who is enlisted in a branch of the armed force
United States Armed Forces oath of enlistment Upon enlisting in the United States Armed Forces, each person enlisting in an armed force (whether a soldier, sailor, coast guardsman, airman, or Marine) takes an oath of enlistment required by federal statute in 10 U.S.C. § 502. That section provides the text of the oath and sets out who may administer the oath: