The New Mexico State Guard (NMSG) the state defense force of the state of New Mexico. The New Mexico State Guard is an all-volunteer, reserve military force which works parallel to the state's National Guard It is authorized by Title 32, Section 109, United States Code, NGB Reg. 10-4, Chapter 20, NMSA, 1978 Comp., U.S. Constitution, and, New Mexico State Constitution. It is one of three military divisions of the Department of Military Affairs of the State of New Mexico ("DMA").