Organized and Federally recognized March 1981 in the California Army National Guard at Camp Roberts as Detachment 1, 570th Military Police Company
Redesignated 1 January 1986 as Detachment 1, 649th Military Police Company; location concurrently changed to San Luis Obispo
Reorganized and redesignated 1 August 1990 as the 649th Military Police Company (less Detachment 1 at Alameda; location of Detachment 1 changed 1 January 1991 to Richmond)
Ordered into active Federal service 3 January 1991 at San Luis Obispo and Richmond; released 25 May 1991 from active Federal service and reverted to state control
Ordered into active Federal service 2 May 1992 at San Luis Obispo and Richmond; released 9 May 1992 from active Federal service and reverted to state control
HOME STATION: San Luis Obispo (less Detachment 1 at Richmond