World Library  
Flag as Inappropriate
Email this Article

51st Operations Group

51st Operations Group
Emblem of the 51st Operations Group
Active 1940–1945; 1946–1957; 1990-Present
Country United States
Branch  United States Air Force
Part of Pacific Air Forces
Motto Deftly and Swiftly
Engagements Burma Campaign
Korean War

The 51st Operations Group (51 OG) is the operational flying component of the United States Air Force 51st Fighter Wing, stationed at Osan Air Base, South Korea.

The group's World War II predecessor unit, the 51st Fighter Group. was activated in January 1941, nearly a year before American entered World War II. It was one of the first groups deployed from the United States after the Attack on Pearl Harbor, traveling west to India via Australia and Ceylon. It has never returned to the United States. Later, during the Korean War, the group's aircraft were some of the first United States Air Force fighters to engage in combat operations over South Korea, frequently engaging enemy fighters in air-to-air combat.


  • Overview 1
  • Assigned Units 2
  • History 3
    • World War II 3.1
    • Korean War 3.2
    • Cold War 3.3
    • Modern era 3.4
    • Lineage 3.5
    • Assignments 3.6
    • Components 3.7
    • Stations 3.8
    • Aircraft 3.9
  • References 4
  • External links 5


The 51st Operations Group is the most forward deployed USAF Operations Group in the world, providing combat ready aircraft for the close air support, air strike control, counter air, interdiction, theater airlift, and communications in the defense of the Republic of Korea.

Assigned Units

The 51 OG (Tail Code: OS) consists of the following squadrons:


For additional history and lineage, see 51st Fighter Wing

World War II

During 1941, trained in the United States for fighter operations. After the Pearl Harbor attack on 7 December, the 51st served as part of the defense force for the west coast. Operational squadrons of the group were the 16th, 25th, 26th and 449th.

The group was deployed to India via Australia and Ceylon beginning in January 1942 and arriving in March, serving in the China Burma India Theater of World War II. It was assigned to Tenth Air Force and equipped with Curtiss P-40 Warhawks and Lockheed P-38 Lightnings. The group defended the Indian terminus of the "Hump" airlift route over the Himalaya Mountains between India and China and airfields in that area. The group flew strafing, bombing, reconnaissance, and patrol missions in support of Allied ground troops during a Japanese offensive in northern Burma in 1943.

After moving to China in October 1943 the 51st FG was assigned to the 69th Composite Wing of Fourteenth Air Force. The group defended the Chinese end of the Hump route and air bases in the Kunming area. Attached Japanese shipping in the Red River delta of Indochina and supported Chinese ground forces in their late 1944 drive along the Salween River. The group was reequipped with North American P-51D Mustangs in 1945 to defend the eastern end of the route over the Hump, and to guard air bases in the Kunming area.

The 51st Fighter Group returned to India in the fall of 1945 and sailed for the United States in November. The group was inactivated on 13 December 1945.

The group was reactivated at Yontan Air Base Okinawa in 1946 and moved to Naha AB when Yontan closed in 1947. The group was assigned to the Twentieth Air Force, 301st Fighter Wing. The group served as part of the occupation force and provided air defense for Okinawa and the Ryukyu Islands until 1950.

Korean War

F-80C of the 51st Fighter-Bomber Wing taking off from Suwon AB with a JATO bottle
North American F-86E-10-NA Sabres of the 25th Fighter-Interceptor Squadron (51st) FBG over Korea. Identifiable is serial is 51–2742.

With the outbreak of the Korean War in 1950, elements of the 51st were dispatched first to Japan, then to South Korea. It entered combat service flying the F-80C Shooting Star on 22 September of that year, when it moved to Itazuke AB, Japan, to support the breakout of the U.S. Eighth Army from the Pusan Perimeter. For nearly 4 years thereafter, the 51st FIW played a key role in the defense of South Korea despite moving to four different locations within a year and operating under austere conditions.

The wing moved to South Korea in October only to return to Japan in December, leaving combat elements behind. In May 1951, the 51st FIW moved to Suwon Air Base, southwest of Seoul, but retained maintenance and supply elements at Tsuiki AB, Japan, to provide rear echelon support. In November 1951 the 51st FIW transitioned to the F-86 Sabre with two squadrons (16th, 25th), adding a third squadron (26th) the following May.

The group operated a detachment at Suwon AB, Korea, beginning in May 1951, and relocated there in October 1951, with maintenance and supply elements remaining in Japan until August 1954. The wing ceased combat on 27 July 1953. The 51 FIW's war record was impressive. Wing pilots flew more than 45,000 sorties and shot down 312 MiG-15s; this produced 14 air aces including the top ace of the war, Captain Joseph C. McConnell. The ratio of aerial victories to losses was 10 to 1. Unfortunately, the wing lost 32 pilots to enemy action; however, nine that became prisoners of war were repatriated later.

Cold War

On 1 August 1954, the 51 FIW returned to Naha Air Base to resume air defense coverage of the Ryukyu Islands. Operational squadrons were the 16th, 25th 26th FISs. At the same time, the wing demonstrated its mobility readiness in response to three regional crises. During the period when the 51st was stationed at Naha, Okinawa, it was called upon to fly cover for the National Chinese who were evacuating the mainland. The 25th went to Formosa and flew out of Chie in the central part of the island and provided assistance to the Seventh Fleet as well as flying recon flights over the mainland of China.

The group was inactivated on 25 October 1957 when the group's parent wing adapted the Tri-Deputate organization and the operational fighter squadrons were assigned directly to the wing.

Modern era

Since 1990, trained and took part in a series of exercises to maintain combat readiness for the air defense of South Korea.


  • Established as 51 Pursuit Group (Interceptor) on 20 November 1940
Activated on 15 January 1941
Redesignated: 51 Pursuit Group (Fighter) on 12 March 1941
Redesignated: 51 Fighter Group on 15 May 1942
Inactivated on 13 December 1945
  • Activated on 15 October 1946
Redesignated: 51 Fighter-Interceptor Group on 1 February 1950
Inactivated on 25 October 1957
  • Redesignated: 51 Tactical Fighter Group on 31 July 1985 (Remained inactive)
  • Redesignated: 51 Fighter Group on 10 September 1990
Activated on 1 October 1990
Redesignated: 51 Operations Group on 7 February 1992.






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

  • Maurer, Maurer (1983). Air Force Combat Units Of World War II. Maxwell AFB, Alabama: Office of Air Force History. ISBN 0-89201-092-4.
  • USAAS-USAAC-USAAF-USAF Aircraft Serial Numbers—1908 to present
  • This article contains information from the Osan Air Base factsheet which is an official document of the United States Government and is presumed to be in the public domain.
  • Rogers, Brian (2005). United States Air Force Unit Designations Since 1978. Hinkley, England: Midland Publications. ISBN 1-85780-197-0.

External links

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.