Force, 1 April 1970 Attached to: Air Division, Provisional, 57, 1 June 1972 – 14 November 1973 3rd Air Division, 1 January 1975 – 30 September 1990 Fifteenth Air Force, 1 June 1992 – 1 October 1996 Twenty-First Air Force, 1 April 1997 Eighteenth Air Force, 1 October 2003 United States Air Force Expeditionary Center, 7 January 2011 – 1 March 2011 Components Groups 43rd Bombardment (later, 43rd Operations) Group: 17 November 1947 – 16 June 1952 (detached 16 August – 16 November 1949; not operational, 10 February 1951 – 16 June 1952); 1 June 1992 – 1 July 1994; 1 April 1997 – 453rd Operations Group: 1 June 1992 – 1 July 1994 459th Bombardment Group: attached 27 June 1949 – 16 June 1951 2nd Bombardment Group: attached 17 November 1947 – 31 December 1948 (not operational). Squadrons 2nd Airlift Squadron: 1 April 1997 – present 2nd Air Refueling Squadron: attached c. 30 April 1949 – 16 September 1950 (not operational, 30 April – 30 June 1949; further attached to 43 Bombardment Group, 1 July 1949 – 16 September 1950);attached 1 July 1949 – 16 September 1950 9th Air Refueling Squadron: attached 1 August 1951 – 15 January 1952 and 6 October – 14 November 1952 28th Air Refueling Squadron: 1 June 1992 – 15 May 1994 41st Airlift Squadron: 1 April 1997 – 23 February 2007 43rd Aeromedical Evacuation Squadron: 1 April 1997 – present 43rd Air Refueling Squadron Attached: 10 February 1951 – 15 June 1952 Assigned: 19 July 1948 – 15 March 1960 (detached 18 October – 28 December 1955); 19 July 1948 – 16 June 1952 (detached 10 February 1951 – 16 June 1952) 60th Bombardment Squadron: 1 July 1971 – 30 April 1990 (not operational, 1 July 1971 – c. February 1972) 63rd Bombardment Squadron: 1 October 1946 – 31 January 1970 (detached 10 February 1951 – 16 June 1952) Bombardment Squadron Provisional, 63rd: attached 15 June 1972 – 30 June 1975 (not operational, c. November 1973 – 30 June 1975) 64th Bombardment Squadron: 1 October 1946 – 31 January 1970 (detached 10 February 1951 – 16 June 1952) 65th Bombardment Squadron (later, 65th Strategic Squadron): attached 10 February 1951 – 15 June 1952, assigned 16 June 1952 – 31 January 1970 (not operational, 15 March – August 1960); 1 July 1986 – 1 July 1990 70th Air Refueling Squadron: attached 19 August–31, 1964,