Combat Systems Technical Schools Command - Mare Island

The Combat Systems Technical Schools Command at Mare Island was a pivotal United States Navy training facility established during the Cold War era. Located at Mare Island Naval Shipyard in Vallejo, California, the command specialized in advanced technical training for sailors in combat systems, including electronics, weapons, and fire control. Its graduates played crucial roles in the operation and maintenance of sophisticated naval technologies aboard U.S. warships. The school supported fleet readiness until the base's closure in the mid-1990s, after which its mission was transferred to other Navy training centers.