25th Air Flotilla
Enlisted fighter pilots of the Tainan Air Group, part of the 25th Air Flotilla, pose at Lae in 1942. Several of these aviators would be among the top Japanese Naval aces, including Saburō Sakai (middle row, second from left), and Hiroyoshi Nishizawa (standing, first on left).
Active1 April 1942 – 5 May 1944
10 July 1944 - 10 February 1945
CountryEmpire of Japan Empire of Japan
AllegianceEmpire of Japan
BranchEmpire of Japan Imperial Japanese Navy
TypeNaval aviation unit
RoleBomber, Fighter, Reconnaissance
Part of11th Air Fleet
Garrison/HQRabaul, New Britain
Lae, Buka, and Buin, Papua New Guinea, and Shortland Islands and Tulagi, Solomon Islands
EngagementsNew Guinea Campaign
Solomon Islands Campaign
Commanders
Notable
commanders		Sadayoshi Yamada

The 25th Air Flotilla (第二五航空戦隊,, Dai Nijūgo Kōkū Sentai, "Nijūgo Kōsen") was a combat aviation unit of the Imperial Japanese Navy Air Service (IJNAS) during the Pacific Campaign of World War II.

History

The 25th Air Flotilla, mainly consisting of land-based bombers, fighters, and reconnaissance aircraft, reported to the 11th Air Fleet. As originally organized, the flotilla's core units were the 4th Air Group, Tainan Air Group, and Yokohama Air Group. The 4th flew bombers, the Tainan fighters, and the Yokohama reconnaissance aircraft. The flotilla, under the command of Rear Admiral Sadayoshi Yamada, was deployed to Rabaul, New Britain on 29 March 1942. From this location, the unit supported Japanese military operations in the New Guinea and Solomon Islands Campaigns. During these campaigns, the unit was augmented by aircraft from other flotillas (i.e., 2nd Air Group and 3rd Air Group). The operational title for this hybrid organization was the 5th Air Attack Force. The organization took heavy losses in air combat over Guadalcanal.[1][2][3][4]

Organization

DateHigher unitAviation units and vessels
1 April 1942 (original)11th Air Fleet4th Air Group[N 1], Tainan Air Group[N 2], Yokohama Air Group[N 3], MV Mogamigawa Maru
29 April 19424th Air Group, Tainan Air Group, Yokohama Air Group, Seaplane tender Akitsushima, MV Mogamigawa Maru
7 August 19424th Air Group, Tainan Air Group, 2nd Air Group, Yokohama Air Group (detachment), 14th Air Group (detachment)[5]
12 September 19424th Air Group, Tainan Air Group, 2nd Air Group, Toko Air Group, Yokohama Air Group (detachment)[6]
10 October 1942Tainan Air Group, 2nd Air Group, 3rd Air Group (detachment), 751st Air Group (ex-Kanoya fighter unit), Toko Air Group, 14th Air Group (detachment)[7]
1 November 1942251st Air Group, 702nd Air Group, 801st Air Group
18 May 1943251st Air Group, 702nd Air Group
1 July 1943251st Air Group, 501st Air Group[N 4], 702nd Air Group
1 September 1943251st Air Group, 253rd Air Group[N 5], 702nd Air Group, 705th Air Group[N 6], 751st Air Group[N 7]
1 December 1943251st Air Group, 253rd Air Group, 751st Air Group
1 February 1944251st Air Group, 582nd Air Group[N 8], 751st Air Group
5 May 1944dissolved
10 July 19442nd Air FleetNansei-Shotō Air Group[N 9]
15 November 1944203rd Air Group[N 10], 701st Air Group[N 11], Nansei-Shotō Air Group
15 December 19443rd Air Fleet203rd Air Group, 701st Air Group
10 February 1945dissolved

Commanding officers

RankNameDateNote
1Rear-AdmiralSadayoshi Yamada1 April 1942
2Rear-AdmiralKeizō Ueno17 November 1942
xdissolved5 May 1944
3Captain / Rear-AdmiralTomozō Kikuchi10 July 1944Rear-Admiral on 15 October 1944.
4CaptainToshiyuki Yokoi24 October 1944
xdissolved10 February 1945

References

Footnotes
  1. ↑ Attack bomber unit. Renamed 702nd Air Group on 1 November 1942.
  2. ↑ Fighter unit. Renamed 251st Air Group on 1 November 1942.
  3. ↑ Flying boat unit. Renamed 801st Air Group on 1 November 1942.
  4. ↑ Combined fighter- and dive bomber unit.
  5. ↑ Fighter unit.
  6. ↑ Attack bomber unit. Before the Misawa Air Group, until 31 October 1942.
  7. ↑ Attack bomber unit. Before the Kanoya Air Group, until 31 October 1942.
  8. ↑ Dive bomber unit. Before the 2nd Air Group, until 31 October 1942.
  9. ↑ Air base guards unit.
  10. ↑ Fighter unit. Before that known as the Atsugi Air Group, until 19 February 1944.
  11. ↑ Attack bomber unit. Before that known as the Toyohashi Air Group, until 19 February 1944.
Citations
Bibliography
  • Japanese army operations in the South Pacific Area New Britain and Papua campaigns, 1942–43. Senshi Sōshō (translated excerpts). Bullard, Steven (translator). Canberra: Australian War Memorial. 2007. ISBN 978-0-9751904-8-7.{{cite book}}: CS1 maint: others (link)
  • Hata, Ikuhiko; Izawa, Yasuho (1989) [1975]. Japanese Naval Aces and Fighter Units in World War II. Don Cyril Gorham (translator). Annapolis, MD: US Naval Institute Press. ISBN 0-87021-315-6.
  • Hata, Ikuhiko; Izawa, Yasuho; Shores, Christopher (2011). Japanese Naval Air. London, UK: Grub Street. ISBN 9781906502843.
  • Lundstrom, John B. (2005b). Black Shoe Carrier Admiral: Frank Jack Fletcher at Coral Sea, Midway, and Guadalcanal. Annapolis, MD: US Naval Institute Press. ISBN 1-59114-475-2.
  • Lundstrom, John B. (2005a). First Team and the Guadalcanal Campaign: Naval Fighter Combat from August to November 1942 (New ed.). Annapolis, MD: US Naval Institute Press. ISBN 1-59114-472-8.
  • Lundstrom, John B. (2005). The First Team: Pacific Naval Air Combat from Pearl Harbor to Midway (New ed.). Annapolis, MD: US Naval Institute Press. ISBN 1-59114-471-X.
  • Tagaya, Osamu (2001). Mitsubishi Type 1 "Rikko" 'Betty' Units of World War 2. Botley, Oxfordshire, UK: Osprey. ISBN 978-1-84176-082-7.
  • Monthly "The Maru" series, and "The Maru Special" series, "Ushio Shobō". (Japan)
  • "Ships of the World" series, "Kaijinsha". (Japan)
  • "Famous Airplanes of the World" series and "Monthly Kōku Fan" series, Bunrindō (Japan)

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