Lineages and Honors of the California National Guard
18th Cavalry Regiment

Constituted 22 July 1885 in the California National Guard as the 7th Infantry Battalion and organized from existing companies in southern California
Expanded, reorganized, and redesignated 5 May 1888 as the 7th Infantry Regiment
Consolidated 7 December 1895 with the 9th Infantry Regiment (organized 8 February 1890 in the California National Guard) and consolidated unit designated as the 7th Infantry Regiment

Mustered into Federal service 9 May 1898 at the Presidio of San Francisco as the 7th California Volunteer Infantry; mustered out of Federal service 2 December 1898 at Los Angeles

Mustered into Federal service 29 June 1916 at Sacramento; mustered out of Federal service 11 November 1916 at Los Angeles Drafted into Federal service 5 August 1917

Consolidated 25 September-1 November 1917 with the 2d Battalion, Companies L and M, and the Sanitary Detachment, 2d Infantry Regiment; consolidated unit reorganized and redesignated as the 160th Infantry and assigned to the 40th Division

Demobilized 7 May 1919 at Camp Kearny, California

Former southern California elements reorganized 23 August-6 October 1921 in the California National Guard as the 160th Infantry and assigned to the 40th Division; Headquarters Federally recognized 31 January 1922 at Los Angeles

2d Battalion 160th Infantry, reorganized and redesignated 1 April 1929 as the 2d Battalion, 185th Infantry, an element of the 40th Division (160th Infantry - hereafter separate lineage)

Expanded, reorganized, and redesignated March-April 1930 as the 2d and 3d Battalions, 185th Infantry, elements of the 40th Division (later designated as the 40th Infantry Division)

Inducted into Federal service 3 March 1941 at home stations Inactivated 7 April 1946 at Camp Stoneman, California

2d Battalion, 185th Infantry, redesignated 5 August 1946 as the 223d Infantry and remained assigned to the 40th Infantry Division (3d Battalion, 185th
Infantry, concurrently redesignated as the 224th Infantry - hereafter separate lineage)

223d Infantry organized and Federally recognized 15 October 1946 with Headquarters at Pasadena Ordered into active Federal service 1 September 1950 at home stations

(223d Infantry [NGUS] organized and Federally recognized 2 September 1952 with Headquarters at Pasadena)

Released 30 June 1954 from active Federal service and reverted to state control; Federal recognition concurrently withdrawn from the 223d Infantry (NGUS)

2d Battalion, 223d Infantry, consolidated with the 3d Battalion, 111th Armored Cavalry (organized and Federally recognized 26 January 1951 with Headquarters at Van Nuys [changed 1 November 1951 to Burbank]); consolidated unit concurrently reorganized and redesignated as the 139th Tank Battalion, with Headquarters at Burbank, and assigned to the 40th Armored Division (223d Infantry - hereafter separate lineage)

139th Tank Battalion reorganized and redesignated 1 July 1959 as the 2d Medium Tank Battalion, 185th Armor, an element of the 40th Armored Division

Reorganized and redesignated 1 March 1963 as the 1st Reconnaissance Squadron, 18th Armored Cavalry, and relieved from assignment to the 40th Armored Division

Reorganized and redesignated 1 November 1965 as the 1st Squadron, 18th Armored Cavalry

Ordered into active Federal service 13 May 1968 at home stations; released 12 December 1969 from active Federal service and reverted to state control

Reorganized and redesignated 13 January 1974 as the 18th Cavalry, a parent regiment under the Combat Arms Regimental System, to consist of the 1st Squadron, an element of the 40th Infantry Division

Withdrawn 19 January 1988 from the Combat Arms Regimental System and reorganized under the United States Army Regimental System
1st Squadron [less Troops C and D] ordered into active Federal service 1 May 1992 at home stations; released 9 May 1992 and reverted to state control

Campaign Participation Credit
 
World War I
Streamer without inscription
World War II
Bismarck Archipelago
Luzon (with arrowhead)
Southern Philippines (with arrowhead)
Korea
Second Korean Winter
Korea, Summer-Fall 1952
Third Korean Winter
Korea, Summer 1953

Decorations

Philippine Presidential Unit Citation, Streamer embroidered 17 OCTOBER 1944 TO 4 JULY 1945

Republic of Korea Presidential Unit Citation, Streamer embroidered KOREA 1952-1953

 

 
12 September 1996
 
JOHN W. MOUNTCASTLE
Brigadier General, United States Army
Chief of Military History

 
TROOP C, 1st SQUADRON, 18th CAVALRY REGIMENT

Worksheet
 
Organized and Federally recognized 18 September 1947 in the California National Guard at Imperial as Headquarters and Service Troop, 109th Cavalry Reconnaissance Squadron
 
Location changed to El Centro
 
Reorganized and redesignated 15 September 1949 as Headquarters and Headquarters Company, 1st Battalion, 111th Armored Cavalry; concurrently
 
Reorganized and redesignated 1 July 1954 as Headquarters and Headquarters Company, 134th Tank Battalion
 
Consolidated 1 May 1959 with the Medical Detachment, 134th Tank Battalion (organized and Federally recognized 1 July 1954 at El Centro), Company D, 134th Tank Battalion (organized and Federally recognized 17 March 1949 at El Centro), and consolidated unit designated as Headquarters and Headquarters Company, 5th Medium Tank Battalion, 185th Armor
 
Converted and redesignated 1 November 1960 as Company B, 40th Ordnance Battalion
 
Reorganized and redesignated 1 March 1963 as Company C, 40th Maintenance Battalion
 
Reorganized and redesignated 15 March 1964 as the 123d Ordnance Company
 
Reorganized and redesignated 1 November 1965 as the 1st, 2d, and 3d Direct Support Platoons, 123d Ordnance Company
 
Converted and redesignated 29 January 1968 as the Battalion Ground Surveillance Section, Battalion Scout Platoon, and the Armored Vehicle Launched Bridge Section, Headquarters and Headquarters Company, 3d Battalion, 185th Armor
 
Reorganized and redesignated 1 November 1971 as the Support Company, 3d Battalion, 185th Armor
 
Reorganized and redesignated 1 November 1985 as tthe Support Company, 2d Battalion, 185th Armor
 
Reorganized and redesignated 1 August 1985 as Company B, 2d Battalion, 185th Armor
 
Location changed 1991-1992 to National City
 
Reorganized and redesignated 1 September 2000 as Detachment 1, Company A, 2d Battalion, 185th Armor; concurrently, location changed to El Cajon
 
Reorganized and redesignated 1 September 2002 as Troop G, 18th Cavalry
 
Reorganized and redesignated 1 September 2007 as Troop C, 1st Squadron, 18th Cavalry Regiment; concurrently, location changed to San Diego
 
 
HOME STATION: San Diego
 
CAMPAIGN PARTICIPATION CREDIT
 
None
 
DECORATIONS
 
None
 
 
 

 
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Updated 12 October 2018