205th Infantry Brigade (United States) - Lineage

Lineage

• Constituted 24 June 1921 in the Organized Reserves as Headquarters and Headquarters Company, 205th Infantry Brigade, and assigned to the 103rd Division
• Organized in November 1921 at Warren, Arizona
• Redesignated 23 March 1925 as Headquarters and Headquarters Company, 205th Brigade
• Redesignated 24 August 1936 as Headquarters and Headquarters Company, 205th Infantry Brigade
• Converted and redesignated 11 February 1942 as the 103rd Reconnaissance Troop (less 3rd Platoon), 103rd Division (Headquarters and Headquarters Company, 206th Infantry Brigade, concurrently converted and redesignated as the 3rd Platoon, 103rd Reconnaissance Troop, 103rd Division)
• Troop ordered into active military service 15 November 1942 and reorganized at Camp Claiborne, Louisiana, as the 103rd Cavalry Reconnaissance Troop, an element of the 103rd Infantry Division
• Reorganized and redesignated 8 August 1943 as the 103rd Reconnaissance Troop, Mechanized
• Inactivated 22 September 1945 at Camp Patrick Henry, Virginia
• Redesignated 15 April 1947 as the 103rd Mechanized Cavalry Reconnaissance Troop
• Activated 28 April 1947 at Council Bluffs, Iowa
• Organized Reserves redesignated 25 March 1948 as the Organized Reserve Corps.
• Reorganized and redesignated 25 November 1949 as the 103rd Reconnaissance Company
• Organized Reserve Corps redesignated 9 July 1952 as the Army Reserve.
• Inactivated 18 May 1959 at Council Bluffs, Iowa
• Converted and redesignated (less 3rd Platoon) 1 February 1963 as Headquarters and Headquarters Company, 205th Infantry Brigade, and relieved from assignment to the 103rd Infantry Division; concurrently activated at Fort Snelling, Minnesota (3d Platoon, 103rd Reconnaissance Company concurrently redesignated as Headquarters and Headquarters Company, 206th Infantry Brigade—hereafter separate lineage)
• Inactivated 15 September 1994 at Fort Snelling, Minnesota
• Withdrawn 24 October 1997 from the Army Reserve and allotted to the Regular Army; Headquarters concurrently activated at Fort Benjamin Harrison, Indiana
• Inactivated 6 October 1999 at Fort Benjamin Harrison, Indiana
• Headquarters activated 1 December 2006 at Indianapolis, Indiana