Constituted 3 May 1861 in the Regular Army as Company B, 1st Battalion, 12th Infantry

Organized 20 October 1861 at Fort Hamilton, New York

Reorganized and redesignated 7 December 1866 as Company B, 12th Infantry

(12th Infantry assigned 17 December 1917 to the 8th Division; relieved 15 August 1927 from assignment to the 8th Division and assigned to the 4th Division; relieved
1 October 1933 from assignment to the 4th Division and assigned to the 8th Division; relieved 10 October 1941 from assignment to the 8th Division and assigned to the 4th Division [later redesignated as the 4th Infantry Division])

Inactivated 27 February 1946 at Camp Butner, North Carolina

Activated 15 July 1947 at Fort Ord, California

Inactivated 1 April 1957 at Fort Lewis, Washington, and relieved from assignment to the 4th Infantry Division

Redesignated 1 August 1957 as Headquarters and Headquarters Company, 2d Battle Group, 12th Infantry, assigned to the 8th Infantry Division, and activated in Germany (organic elements concurrently constituted and activated)

Relieved 24 March 1959 from assignment to the 8th Infantry Division and assigned to the 1st Infantry Division

Reorganized and redesignated 1 October 1963 as the 2d Battalion, 12th Infantry; concurrently relieved from assignment to the 1st Infantry Division and assigned to the 4th Infantry Division

Relieved 1 August 1967 from assignment to the 4th Infantry Division and assigned to the 25th Infantry Division

Inactivated 17 April 1971 at Fort Lewis, Washington

Relieved 1 April 1976 from assignment to the 25th Infantry Division, assigned to the 4th Infantry Division, and activated at Fort Carson, Colorado

Inactivated 21 September 1976 at Fort Carson, Colorado

Activated 16 June 1989 at Fort Carson, Colorado

Inactivated 15 September 1995 at Fort Carson, Colorado, and relieved from assignment to the 4th Infantry Division

Activated 29 September 2005 at Fort Carson, Colorado, as an element of the 2d Infantry Division

Redesignated 1 October 2005 as the 2d Battalion, 12th Infantry Regiment

Relieved 16 November 2005 from assignment to the 2d Infantry Division and assigned to the 2d Brigade Combat Team, 2d Infantry Division

Relieved 16 March 2008 from assignment to the 2d Brigade Combat Team, 2d Infantry Division, and assigned to the 4th Brigade Combat Team, 4th Infantry Division

 

CAMPAIGN PARTICIPATION CREDIT

  Vietnam
*Counteroffensive, Phase II
*Counteroffensive, Phase III
*Tet Counteroffensive
*Counteroffensive, Phase IV
*Counteroffensive, Phase V
*Counteroffensive, Phase VI
*Tet 69/Counteroffensive
*Summer-Fall 1969
*Winter-Spring 1970
*Sanctuary Counteroffensive
*Counteroffensive, Phase VII

  War on Terrorism
Iraq:
*National Resolution

  (Additional campaigns to be determined)

 

DECORATIONS

*Presidential Unit Citation (Army), Streamer embroidered LUXEMBOURG

*Presidential Unit Citation (Army), Streamer embroidered SUOI TRE, VIETNAM

*Meritorious Unit Commendation (Army), Streamer embroidered IRAQ 2006-2008

*Belgian Fourragere 1940

*Cited in the Order of the Day of the Belgian Army for action in Belgium

*Cited in the Order of the Day of the Belgian Army for action in the Ardennes

*Republic of Vietnam Cross of Gallantry with Palm, Streamer embroidered VIETNAM 1966-1967

*Republic of Vietnam Cross of Gallantry with Palm, Streamer embroidered VIETNAM 1967-1968

*Republic of Vietnam Cross of Gallantry with Palm, Streamer embroidered VIETNAM 1968-1970

*Republic of Vietnam Cross of Gallantry with Palm, Streamer embroidered VIETNAM 1968-1970

*Republic of Vietnam Civil Action Honor Medal, First Class, Streamer embroidered VIETNAM 1967-1970

 

BY ORDER OF THE SECRETARY OF THE ARMY: