Converted and redesignated 23 February 1942 as the 83rd Reconnaissance Troop (less 3rd Platoon), 83rd division Headquarters and Headquarters Company, 165th infantry Brigade, concurrently converted and redesignated as the 3rd Platoon, 83rd reconnaissance Troop, 83 Division.

Troop ordered into active military service 15 August 1942 and reorganized at Camp Atterbury, Indiana, as the 83rd Cavalry reconnaissance Troop, and element of the 83rd Infantry division.

Converted and redesignated (less 3rd Platoon) 27 March 1963 as headquarters and headquarters Company, 2nd Brigade, 83rd Infantry Division (3rd Platoon, 83rd reconnaissance Company – hereafter separated lineage).

It was activated 15 April 1963 at Columbus, Ohio and then inactivated 31 December 1965 at Columbus, Ohio The unit was again activated on 26 January 2007 as headquarters and Headquarters Company, 165th Infantry Brigade and transferred to the United States Army Training and Doctrine Command; Headquarters concurrently activated at Fort Jackson, South Carolina to serve as a Training Brigade.

This article incorporates public domain material from Headquarters, 165th Infantry Brigade Lineage and Honors.