(a) In the state military forces not in federal service, the processes and sentences of its courts-martial shall be executed by the civil officers prescribed by the laws of the state.
(b) If the sentence of a court-martial, as approved and ordered executed, adjudges confinement, and the convening authority has approved the sentence in whole or in part, the reviewing authority, or the commanding officer for the time being, as the case may be, shall issue a warrant of commitment to the sheriff of the county in which the court-martial was held or in which the offense was committed, directing the sheriff to take the body of the sentenced person and confine him in the county jail of the county for the period named in the sentence, as approved, or until the sheriff is directed to release him by proper authority.