1120th MAINTENANCE COMPANY

• Organized and Federally recognized 31 August 1918 in the Oklahoma National Guard at Tishomingo as Company C, 3d Infantry
• Redesignated 2 June 1921 as Company L, 3d Infantry
• Redesignated 14 October 1921 as Company L, 180th Infantry, an element of the 45th Division (later redesignated as the 45th Infantry Division)
• Reorganized and redesignated 31 December 1921 as Headquarters Company, 1st Battalion, 180th Infantry
• Reorganized and redesignated 1 May 1940 as Headquarters Detachment, 1st Battalion, 180th Infantry
• Inducted into Federal service 16 September 1940 at Tishomingo
• Reorganized and redesignated 30 June 1942 as Headquarters Company, 1st Battalion, 180th Infantry
• Inactivated 24 November 1945 at Camp Bowie, Texas
• Reorganized and Federally recognized 3 October 1946 in the Oklahoma National Guard at Tishomingo as the 45th Cavalry Reconnaissance Troop, Mechanized, an element of the 45th Infantry Division
• Reorganized and redesignated 1 December 1948 as the 45th Reconnaissance Company
• Converted, reorganized, and redesignated 1 February 1949 as Company H, 180th Infantry, an element of the 45th Infantry Division
• Ordered into active Federal service 1 September 1950 at Tishomingo
• (Company H, 180th Infantry [NGUS], organized and Federally recognized 20 November 1952 at Tishomingo)
• Released from active Federal service 30 April 1954 and reverted to state control; Federal recognition concurrently withdrawn from Company H, 180th Infantry (NGUS)
• Reorganized and redesignated 1 May 1959 as Company E, 1st Battle Group, 180th Infantry
• Reorganized and redesignated 30 September 1962 as the 2d Rifle and Weapons Platoon, Company B, 1st Battle Group, 180th Infantry
• Converted, reorganized, and redesignated 1 April 1963 as Company A, 2d Battalion, 245th Armor, an element of the 45th Infantry Division
• Converted, reorganized, and redesignated 1 February 1968 as the 1245th Transportation Company and relieved from assignment to the 45th Infantry Division
• Reorganized and redesignated 1 May 1975 as Detachment 1, 1345th Transportation Company
• Redesignated 1 May 1976 as Detachment 1, 1245th Transportation Company
• Reorganized and redesignated 1 May 1982 as the 1245th Transportation Company
• Reorganized and redesignated 6 September 1992 as Detachment 1, 1245th Transportation Company
• Reorganized and redesignated 1 September 1996 as Detachment 1, 1120th Maintenance Company
• Consolidated 1 September 2001 with Detachment 2, 1120th Maintenance Company (organized and Federally recognized 16 November 1946 at Sulphur); consolidated unit designated as Detachment 1, 1120th Maintenance Company and location concurrently changed to Sulphur
• Consolidated 1 March 2007 with the 1120th Maintenance Company (see ANNEX), and consolidated unit designated as the 1120th Maintenance Company; location concurrently changed to Ada
• Ordered into active Federal service 19 October 2007 at Ada; released from active Federal service 21 November 2008 and reverted to state control
• ANNEX
• Organized and Federally recognized 8 May 1923 in the Oklahoma National Guard at Sulphur as Headquarters Battery, 158th Field Artillery, an element of the 45th Division (later redesignated as the 45th Infantry Division)
• Inducted into Federal service 16 September 1940 at Sulphur
• Disbanded 11 February 1942
• Reconstituted 25 August 1945 in the Oklahoma National Guard at Sulphur
• Converted, reorganized and Federally recognized 3 October 1946 as the Cannon Company, 180th Infantry, an element of the 45th Infantry Division
• Reorganized and redesignated 1 November 1948 as the Heavy Mortar Company, 180th Infantry
• Ordered into active Federal service 1 September 1950 at Sulphur
• (Heavy Mortar Company, 180th Infantry [NGUS] organized and Federally recognized 21 October 1952 at Sulphur)
• Heavy Mortar Company, 180th Infantry released from active Federal service 30 April 1954 and reverted to state control; Federal recognition concurrently withdrawn from the Heavy Mortar Company, 180th Infantry (NGUS)
• Reorganized and redesignated 1 May 1959 as the Combat Support Company (less Reconnaissance Platoon at Ada), 1st Battle Group, 180th Infantry, an element of the 45th Infantry Division
• Reorganized and redesignated 30 September 1962 as the Combat Support Company, 1st Battle Group, 180th Infantry
• Converted, reorganized, and redesignated 1 April 1963 as Company B, 120th Supply and Transport Battalion, an element of the 45th Infantry Division
• Reorganized and redesignated 1 February 1968 as the 1145th Transportation Company
• Converted, reorganized, and redesignated 1 December 1971 as the 1120th Maintenance Company
• Location changed 1 August 1999 to Ada
• Consolidated 1 September 2001 with Detachment 1, 1120th Maintenance Company (organized and Federally recognized 7 March 2000 at Konawa), and consolidated unit designated as the 1120th Maintenance Company

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