10 U.S.C. § 886: Art. 86. Absence without leave

Any member of the armed forces who, without authority—(1) fails to go to his appointed place of duty at the time prescribed; (2) goes from that place; or (3) absents himself or remains absent from his unit, organization, or place of duty at which he is required to be at the time prescribed; shall be punished as a court-martial may direct.