10 U.S.C. § 1155
- Secretary concerned
- The term "Secretary concerned" means-(A) the Secretary of the Army, with respect to matters concerning the Army;(B) the Secretary of the Navy, with respect to matters concerning the Navy, the Marine Corps, and the Coast Guard when it is operating as a service in the Department of the Navy;(C) the Secretary of the Air Force, with respect to matters concerning the Air Force and the Space Force; and(D) the Secretary of Homeland Security, with respect to matters concerning the Coast Guard when it is not operating as a service in the Department of the Navy.
- active duty
- The term "active duty" means full-time duty in the active military service of the United States, including sustained duty in the Space Force. Such term includes full-time training duty, annual training duty, and attendance, while in the active military service, at a school designated as a service school by law or by the Secretary of the military department concerned. Such term does not include full-time National Guard duty.
- armed forces
- The term "armed forces" means the Army, Navy, Air Force, Marine Corps, Space Force, and Coast Guard.