Headquarters,
45th Infantry Brigade Combat Team

• Constituted 19 October 1920 as Headquarters, 45th Division (to be organized with troops from Arizona, Colorado, New Mexico, and Oklahoma)
• Organized and Federally recognized 3 August 1923 at Oklahoma City, Oklahoma; Headquarters Detachment organized and Federally recognized 1 July 1924 at Oklahoma City, Oklahoma
• Headquarters and Headquarters Detachment, 45th Division, inducted into Federal service 16 September 1940 at Oklahoma City
• Redesignated 23 February 1942 as the 45th Infantry Division
• Reorganized and redesignated 23 February 1942 as Headquarters, 45th Infantry Division
• Inactivated 7 December 1945 at Camp Bowie, Texas
• Reorganized and Federally recognized 5 September 1946 in the Oklahoma National Guard at Oklahoma City
• Ordered into active Federal service 1 September 1950 at Oklahoma City
• (Headquarters, 45th Infantry Division [NGUS], organized and Federally recognized 15 September 1952 at Oklahoma City)
• Released from active Federal service 30 April 1954 and reverted to state control; Federal recognition concurrently withdrawn from Headquarters, 45th Infantry Division (NGUS)
• Reorganized and redesignated 1 February 1968 as Headquarters, 45th Infantry Brigade, and location changed to Edmond (Headquarters Company, 45th Infantry Brigade, concurrently reorganized and redesignated from Headquarters Company, 1st Battalion, 179th Infantry - see ANNEX)
• Location changed 1 October 1996 to Oklahoma City
• Ordered into active Federal service 19 September 2003 at Oklahoma City; released from active Federal service 17 September 2004 and reverted to state control
• Ordered into active Federal service 19 October 2007 at Oklahoma City
• Reorganized and redesignated 1 September 2008 as Headquarters, 45th Infantry Brigade Combat Team
• Released from active Federal service 21 November 2008 and reverted to state control
• Location changed 1 July 2010 to Norman
• Ordered into active Federal service 27 March 2011 at Norman; released from active Federal service 29 April 2012 and reverted to state control
• ANNEX
• Organized and Federally recognized 31 August 1918 in the Oklahoma National Guard at Edmond as Headquarters Company, 2d Infantry
• Redesignated 14 October 1921 as Headquarters Company, 179th Infantry, an element of the 45th Division (later redesignated as the 45th Infantry Division)
• Inducted into Federal service 16 September 1940 at Edmond
• Inactivated 21 September 1945 at Camp Bowie, Texas
• Reorganized and Federally recognized 10 September 1946 at Edmond
• Ordered into active Federal service 1 September 1950 at Edmond
• (Headquarters Company, 179th Infantry [NGUS], organized and Federally recognized 15 September 1952 at Edmond)
• Released from active Federal service 30 April 1954 and reverted to state control; Federal recognition concurrently withdrawn from Headquarters Company, 179th Infantry (NGUS)
• Reorganized and redesignated 1 May 1959 as Headquarters Company, 1st Battle Group, 179th Infantry
• Reorganized and redesignated 1 April 1963 as Headquarters Company, 1st Battalion, 179th Infantry

HOME STATION: Norman