(b) When delivery under this section is made to any civil authority of a person undergoing sentence of a court-martial, the delivery, if followed by conviction in a civil tribunal, interrupts the execution of the sentence of the court-martial. The offender, after having answered to the civil authorities for his offense, shall, upon the request of competent military authority, be returned to military custody for the completion of such sentence of the court-martial.
PART III. NONJUDICIAL PUNISHMENT.