10 U.S.C. § 1049
The following persons may be provided subsistence at the expense of the United States:
- (1)Enlisted members while sick in hospitals.
- (2)Applicants for enlistment and selective service registrants called for induction.
- (3)Prisoners.
- (4)Civilian employees, as authorized by law.
- (5)Supernumeraries, when necessitated by emergent military circumstances.