519th Air Defense Group

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519th Air Defense Group
75th Fighter-Interceptor Squadron North American F-86A-5-NA Sabre 49-1280.jpg
F-86A Sabre of the group's 75th FIS with US Navy F9F Cougar off Long Island
Active 1945-1947; 1953–1955
Country  United States
Branch  United States Air Force
Type Fighter Interceptor
Role Air Defense
Part of Air Defense Command
Equipment North American F-86 Sabre

The 519th Air Defense Group is a disbanded United States Air Force organization. Its last assignment was with the 4709th Air Defense Wing, stationed at Suffolk County Air Force Base, New York, where it was inactivated in 1955. The group was originally activated as a support unit for the 485th Bombardment Group at the end of World War II in Italy and then redeployed to the United States where it was inactivated in 1945.

The group was activated once again in 1953, when ADC established it as the headquarters for a dispersed fighter-interceptor squadron and the medical, maintenance, and administrative squadrons supporting it. It was replaced in 1955 when ADC transferred its mission, equipment, and personnel to the 52d Fighter Group in a project that replaced air defense groups commanding fighter squadrons with fighter groups with distinguished records during World War II.


World War II and Post-War[edit]

The group was activated as the 519th Air Service Group in Italy shortly before the end of World War II in early 1945 as part of a reorganization of Army Air Forces (AAF) support groups in which the AAF replaced Service Groups that included personnel from other branches of the Army and supported two combat groups with Air Service Groups including only Air Corps units.[1] Designed to support a single combat group.[2] Its 945th Air Engineering Squadron provided maintenance that was beyond the capability of the combat group, its 769th Air Materiel Squadron handled all supply matters, and its Headquarters & Base Services Squadron provided other support.[2] It supported the 485th Bombardment Group in Italy.[3] The group returned to the US, where it continued to support heavy bombardment groups. The group was scheduled to move overseas in 1946, but its movement was cancelled.[4] It was reduced to nominal strength of 4 officers and 7 enlisted men in March 1946, but re-manned in April.[5] The group deployed to Alaska with the 97th Bombardment Group.[6][7] It was replaced by 97th Airdrome Group, 97th Maintenance & Supply Group, and 97th Station Medical Group as part of the Air Force Wing/Base reorganization (Hobson Plan) in 1947, which was designed to unify control at air bases.[6][8][9] It was disbanded in 1948.[10]

Cold War[edit]

The 519th was reconstituted, redesignated as an air defense group, and activated at Suffolk County AFB in 1953[11] with responsibility for air defense of the Northeastern United States.[citation needed] It was assigned the 45th Fighter-Interceptor Squadron (FIS) and 75th FIS, which were already stationed at Suffolk County AFB, flying North American F-86 Sabres[12][13] as its operational components.[14][15] The 45th FIS and 75th FIS had been assigned directly to the 4709th Defense Wing.[14][15] The group replaced 77th Air Base Squadron as USAF host unit at Suffolk County AFB. It was assigned three squadrons to perform its support responsibilities.[16][17] Eight days later, the 331st FIS, equipped with a radar equipped and HVAR rocket armed model of the "Sabre"[18] was activated and assigned to the group.[19] In May 1953, the 45th FIS moved to Morocco and was reassigned away from the group.[14] Later in 1953, the 75th FIS upgraded to improved radar equipped "Sabres".[13]

The 519th was inactivated[11] and replaced by the 52d Fighter Group (Air Defense)[20][21] as result of Air Defense Command's Project Arrow, which was designed to bring back on the active list the fighter units which had compiled memorable records in the two world wars.[22] The group was disbanded once again in 1984.[23]


  • Constituted as: 519th Air Service Group
Activated on 20 January 1945[3]
Inactivated 1 December 1947
Disbanded 8 October 1948
  • Reconstituted and redesignated as: 519th Air Defense Group on 21 January 1953
Activated on 16 February 1953
Inactivated on 18 August 1955
Disbanded on 27 September 1984


  • Unknown, 20 January 1945 - ca. May 1945 (probably XV Air Force Service Command)
  • 20th Bombardment Wing (later VIII Bomber Command), ca.1945 - March 1946
  • Fifteenth Air Force, March 1946 - 1947
  • 4709th Defense Wing (later 4709th Air Defense Wing), 16 February 1953 – 18 August 1955[11]




  • F-86A 1953
  • F-86F 1953
  • F-86D, 1953-1955

See also[edit]



  1. ^ a b c d Abstract, History of 519th Air Service Group, Jan 1945-Feb 1945 (retrieved Jan 7, 2012)
  2. ^ a b Coleman, p. 208
  3. ^ a b Abstract, History of 323d Service Group, 517th-519th Air Service Groups, Jan 1945 (retrieved June 21, 2012)
  4. ^ Abstract, History of 519th Air Service Group, Jan 1946 (retrieved Jan 7, 2012)
  5. ^ Abstracts, Histories of 519th Air Service Group Mar 1946, Apr 1946 (retrieved Jan 7, 2012)
  6. ^ a b c Mueller, pp. 143, 145
  7. ^ See Robertson, Patsy, http://www.afhra.af.mil/factsheets/factsheet.asp?id=9855 AFHRA Factsheet, 97th Operations Group] 7/19/2010(retrieved 22 Mar 2012)
  8. ^ Goss, p. 59 note
  9. ^ Abstract, History of 769th Air Materiel Squadron, Aug 1947-Nov 1947 (retrieved January 7, 2012)
  10. ^ Department of the Air Force Letter, 322 (AFOOR 887e), 8 October 1948, Subject: Disbandment of Certain Inactive Air Force Units
  11. ^ a b c Cornett & Johnson, p. 82
  12. ^ Cornett & Johnson, p. 115
  13. ^ a b Cornett & Johnson, p. 118
  14. ^ a b c Maurer, Maurer, ed. (1982) [1969]. Combat Squadrons of the Air Force, World War II (reprint ed.). Washington, DC: Office of Air Force History. p. 202. ISBN 0-405-12194-6. 
  15. ^ a b Maurer, Combat Squadrons, p. 274
  16. ^ a b Cornett & Johnson, p.147
  17. ^ a b Abstract, History of 519th USAF Infirmary, Jan-Jun 1955 (retrieved June 21, 2012)
  18. ^ Cornett & Johnson, p.136
  19. ^ Maurer, Combat Squadrons, p.408
  20. ^ Maurer, Combat Units, p. 114
  21. ^ Robertson, Patsy, AFHRA Factsheet, 52nd Operations Group 1/27/2009 (retrieved March 3, 2012)
  22. ^ Buss, Sturm, Volan, & McMullen, p.6
  23. ^ Department of the Air Force/MPM Letter 575q, 27 Sep 1984, Subject: Disbandment of Units
  24. ^ a b c Abstract, History of 519th Air Service Group, Apr 1945-Jul 1945 (retrieved Jan 7, 2012)
  25. ^ Abstract, History of 519th Air Service Group, Sep 1945 (retrieved Jan 7, 2012) (this was a paper transfer without personnel or equipment)
  26. ^ Robertson, Patsy, AFHRA Factsheet, 45th Fighter Squadron 11/24/2010 (retrieved March 3, 2012)
  27. ^ Robertson, Patsy, AFHRA Factsheet, 75th Fighter Squadron 2/26/2008 (retrieved March 3, 2012)


 This article incorporates public domain material from websites or documents of the Air Force Historical Research Agency.

  • Buss, Lydus H.(ed), Sturm, Thomas A., Volan, Denys, and McMullen, Richard F., History of Continental Air Defense Command and Air Defense Command July to December 1955, Directorate of Historical Services, Air Defense Command, Ent AFB, CO, (1956)
  • Coleman, John M (1950). The Development of Tactical Services in the Army Air Forces. New York, NY: Columbia University Press. 
  • Cornett, Lloyd H; Johnson, Mildred W (1980). A Handbook of Aerospace Defense Organization, 1946–1980. Peterson AFB, CO: Office of History, Aerospace Defense Center. 
  • Goss, William A (1955). "The Organization and its Responsibilities, Chapter 2 The AAF". In Craven, Wesley F & Cate, James L. The Army Air Forces in World War II. Vol. VI, Men & Planes. Chicago, IL: University of Chicago Press. LCCN 48003657. 
  • Maurer, Maurer, ed. (1983) [1961]. Air Force Combat Units of World War II (reprint ed.). Washington, DC: Office of Air Force History. ISBN 0-912799-02-1. LCCN 61060979. 
  • Maurer, Maurer, ed. (1982) [1969]. Combat Squadrons of the Air Force, World War II (reprint ed.). Washington, DC: Office of Air Force History. ISBN 0-405-12194-6. LCCN 70605402. OCLC 72556. 

Further Reading

External links[edit]