About California State Military Reserve The California State Military Reserve (CSMR) is the State Defense Force of California authorized by United States Code (32 USC 109c) and the California Military and Veteran’s Code (CM&VC 550). The mission of the California State Military Reserve, as recognized in National Guard Regulation 10-4, is to provide an adequately trained and organized State military reserve force under the exclusive control of the Governor. The CSMR is meant to be capable of accomplishing those State emergency responsibilities normally assigned to the National Guard, when the Guard is federalized or otherwise not available. In addition, the CSMR performs such military duties as the Governor directs within the parameters of applicable federal and state law. Typically those additional military duties include assisting civil authorities during domestic emergencies and assisting in the mobilization and demobilization process of the National Guard. The CSMR is a volunteer operational force upon which the California National Guard depends. Its members are subject to call to state active duty by the Governor of the State of California.