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 this state or regulations adopted under sections 40.005 to 40.490. Fees for serving processes provided for in sections 40.005 to 40.490 shall be the same as prescribed by law for similar processes of a civil nature, and shall upon proper vouchers being filed, be paid by the adjutant general in the usual manner.