3-4th Cavalry Regiment
In FY 2006, as part of the Army's transformation towards a modular force, the 3-4 CAV stood down from the Aviation BDE and stood up with the 3rd Brigade, 25th IN.
The 3rd Squadron, 4th Cavalry Regiment, was originally constituted on 3 March 1855 in the regular Army as Company C, 1st Cavalry. Organized 17 June 1855 at Jefferson Barrracks, MO. It was redesignated on 3 August 1861 as Company C, 4th Cavalry. (Cavalry Companies officially designated as troops in 1883). IT was reorganized and redesignated on February 1928 as the Machine Gun Troop, 4th Cavalry; as the Service Troop, 4th Cavalry; and on 16 April 1942 as the Service Troop, 4th Cavalry Mechanized.
The unit was consolidated on 21 December 1943 with Headquarters Troop, 4th Cavalry, and the consolidated unit was reorganized and redesignated as Headquarters Troop, 4th Cavalry Group, Mechanized.
It was converted and redesignated on 1 May 1946 as Heaquarters and Service Toop, 4th constabulary regiment. It inactivated 1 May 1949 in Austria.
Redesignated on 20 August 1953 as Headquarters Company, 4th Armored Cavalry, the former Troop C, 4th Cavalry, was withdrawn on 15 February 1957 and consolidated with Troop C, 4th Cavalry, and the 25th Reconnaissance Company (active). The consolidated unit was redesignated and reorganized as Headquarters and Headquarters Troop, 3rd Reconnaissance Squadron, 4th Cavalry, an element of the 25th Infantry Division (its organic element were concurrently consolidated and reorganized).
It was reorganized and redesignated on 29 July 1963 as the 3rd Squadron, Cavalry. It inactivated on 16 March 1987 in Hawaii and was relieved from assignment to the 25th Infantry Division.
The unit was reassigned on 16 June 1989 to the 3rd Infantry Division and activated in Germany. It was relieved on 16 February 1996 from assignment to the 3rd Infantry Division and assigned to the 25th Infantry Division.
