as: Air Force Systems Command, 1 April 1961 Tactical Air Command, 1 January 1971 Air Combat Command, 1 June 1992 – 28 September 2018 Air Education and Training Command, 28 September 2018 – present Major units assigned World War II station units 359th Base HQ and Air Base Squadron, 10 June 1942 – 25 March 1944 231st Army Air Forces Base Unit, 25 March 1944 – 16 March 1947 206th Army Air Forces Base Unit, 22 August 1944 – 6 June 1945 1073d Army Air Forces Base Unit, 24 August 1944 – 15 January 1945 World War II training units 301st Bombardment Group, 27 May – 21 June 1942 (B-17) 303d Bombardment Group, 17 June – 7 August 1942 (B-17) 330th Bombardment Group 1 August – 2 September 1942; 29 November 1942 – 5 April 1943 (B-24 OTU) 392d Bombardment Group, 18 March – 18 July 1943 (B-24) 454th Bombardment Group, 1 June – 1 July 1943 (B-24) 455th Bombardment Group, 1 June – 6 September (B-24) 459th Bombardment Group, 1–28 July 1943 (B-24) 460th Bombardment Group, 1 July – 31 August 1943 (B-24) 449th Bombardment Group, 5 July – 12 September 1943 (B-25) 450th Bombardment Group, 8 July – 20 November 1943 (B-24) 465th Bombardment Group, 1 August–September 1943 (B-24) 466th Bombardment Group 1–31 August 1943; 24 November 1943 – February 1944 (B-24) 36th Fighter Group, 7–26 November 1943 (P-47) 400th Bombardment Group, 19 September – 11 December 1943 (B-24 OTU) 492d Bombardment Group, October 1943 – January 1944 (B-24) 487th Bombardment Group, 15 December 1943 – March 1944 (B-24) 25th Bombardment Group, 6 April – 20 June 1944 (B-24 elements) 680th Bombardment Squadron, 4 December 1944 – 10 May 1945 (B-24) 467th Bombardment Group, 22 August – 8 September 1945 (B-17, YB-29) United States Air Force 4145th Army Air Forces Base Unit, 16 March 1947 Re-designated: 2754th Air Force Base Unit27 September 1947 – 20 September 1949 2754th Experimental Wing, 20 September 1949 Re-designated: 6540th Missile Test Wing, 30 June 1951 Re-designated: 6580th Missile Test Wing, 1 September 1952 Re-designated: Holloman Air Development Center, 10 October 1952 Re-designated: Air Force Missile Development Center1 September 1957 – 1 August 1970 6585th Test Group, 1 August 1970 Re-designated: 46th Test Group, 1 October 1992 – 18 July 2012 96th Test Group, 18 July 2012 – present 3089th Experimental Group, 5 October 1949 Re-designated: 6540th Missile Test Group, 1 January 1951