Organized 28 July 1909 in the California National Guard at San Francisco as the 7th Company, 1st Coast Defense Command, Coast Artillery Corps
Drafted into Federal service 5 August 1917
Reorganized and redesignated 31 August 1917 as the 27th Company, Coast Defenses of San Francisco
Reorganized and redesignated 25 October 1918 as Battery D, 18th Artillery (Coast Artillery Corps)
Redesignated 2 December 1918 as the 27th Company, Coast Defenses of San Francisco
Demobilized in September 1919 at Fort Winfield Scott, California
Reorganized and Federally recognized 7 May 1924 in the California National Guard at San Francisco as Battery M, 250th Coast Artillery
Redesignated 1 November 1924 as Battery F, 250th Coast Artillery
Inducted into Federal service 16 September 1940 at San Francisco
Converted and redesignated 18 May 1944 as Battery B, 527th Field Artillery Battalion
Inactivated 24 September 1945 in Italy
Reorganized and Federally recognized 5 April 1948 at San Francisco as Battery C, 271st Antiaircraft Artillery Automatic Weapons Battalion
Reorganized and redesignated 1 January 1951 as Battery C, 271st Antiaircraft Artillery Gun Battalion
Redesignated 1 October 1953 as Battery C, 271st Antiaircraft Artillery Battalion
Reorganized and redesignated 1 March 1958 as Battery C, 271st Missile Battalion
Location changed 1 May 1958 to Daly City
Reorganized and redesignated 1 May 1959 as Battery C, 2d Missile Battalion, 250th Artillery
Consolidated 1 March 1963
with Company D, 1st Battle Group, 159th Infantry (see ANNEX 1),
and consolidated unit reorganized and redesignated as Company
A, 1st Battalion, 159th Infantry, an
element of the 49th Infantry Division; location concurrently changed
to San Francisco
Consolidated 29 January
1968 with Company C, 1st Battalion, 159th Infantry (see ANNEX
1), and consolidated unit designated as Company A, 1st Battalion,
159th Infantry; concurrently relieved
from assignment to the 49th Infantry Division
Converted and redesignated 13 January 1974 as the 970th Military Police Company (less Detachment 1 at San Mateo)
Location changed 1 Sepember 1975 to San Mateo
Consolidated 1 November 1991 with Detachment 1, 970th Military Police Company (see ANNEX 2), and consolidated unit designated as the 970th Military Police Company
Ordered into active Federal service 2 May 1992 at San Mateo; released 9 May 1992 from active Federal service and reverted to state control
Annex 1
Organized and Federally
recognized in the California National Guard at San Francisco as
elements of the 3d Battalion, 159th Infantry, an element of the
40th Division, as follows:
Headquarters and Headquarters Company, 3d Battalion, on 13 June
1922
Company K on 28 March 1922
Company L on 4 April 1922
Company M on 28 March 1922
Inducted into Federal service 3 March 1941 at home stations (159th Infantry relieved 29 October 1941 from assignment to the 40th Division and assigned to the 7th Division [later redesignated as the 7th Infantry Division]; relieved 23 August 1943 from assignment to the 7th Infantry Division)
Inactivated 4 November 1945 at Camp Shanks, New York
(159th Infantry assigned 5 August 1946 to the 49th Infantry Division)
Reorganized and Federally recognized at San Francisco as follows:
Headquarters and Headquarters
Company, 3d Battalion, and Companies K and L on 19 March 1947
Company M on 23 April 1947
(Company L changed location 1 May 1955 to Daly City)
Reorganized and redesignated 1 May 1959 as elements of the 1st Battle Group, 159th Infantry, as follows:
Headquarters and Headquarters Company, 3d Battalion, and Company K consolidated to form Company C
Company L as Company D
Company M as Company E
Companies C and E, 1st Battle Group, 159th Infantry, consolidated 1 March 1963 to form Company C, 1st Battalion, 159th Infantry
Annex 2
Organized 19 May 1949 in the California Army National Guard at Fairfax as Company D, 579th Engineer Battalion, an element of the 49th Infantry Division
Location changed 1 October 1959 to San Rafael
Redesignated 1 March 1963 as Company E, 579th Engineer Battalion
Redesignated 29 January 1968 as Company D, 579th Engineer Battalion
Redesignated 13 January 1974 as Company D, 132d Engineer Battalion, an element of the 40th Infantry Division
Reorganized and redesignated 1 November 1976 as Detachment 1, Company C, 579th Engineer Battalion, an element of the 49th Infantry Division
Redesignated 1 October 1981 as Detachment 1, Company D, 579th Engineer Battalion
Converted and redesignated 1 August 1986 as Detachment 1, 970th Military Police Company, and relieved from assignment to the 49th Infantry Division
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