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Imperial Japanese Navy (IJN) Kōkūtai (Air Group)
On November 1, 1942 all named Kokutai were redesignated with three digit identifies.

Kōkūtai (Air Group)

GF = Remgo Kantai
F = Kantai
SF = Koku Sentai
FG = Kokutai
(Air Group)
Chutai (Company)
Shotai (Flight)

Yokosuka Kōkūtai
Tail code ヨ-XXX. The backward 'ヨ' translates to "YO" for "Yokosuka".
During 1945 operated A6M7 Model 62 Zeros from Yokosuka Airfield for defense of the home islands

1st Kōkūtai (1st Ku)

2nd Kōkūtai (2nd Ku) / 582 Kōkūtai (582 Ku)

3rd Kōkūtai (3rd Ku) / 202 Kōkūtai (202 Ku)

Chitose Kōkūtai / 4th Kōkūtai (4th Ku)

5th Kōkūtai (5th Ku) / 452 Kōkūtai (452 Ku)

6th Kōkūtai (6th Ku) / 204 Kōkūtai (204 Ku)

14th Kōkūtai (14th Ku)

During 1937, operated at the beginning of the China incident (Shina-Jihen) flying A5M Claudes

Tail Codes:

31st Kōkūtai (31st Ku) / 954 Kōkūtai (954 Ku)

33rd Kokutai / 932 Kokutai (932 Ku)

Areas of Operation
February 1, 1942 D3A Val
Balikpapan (February 1942)
Makassar (March 1942)
Surabaya (April - June 1942)
Batavia (Jakarta) July - October 1942

Formed 1 February 1942 at Saeki; assigned to 3rd Fleet with eight Type 99 bombers, 8 Type 97 attackers; April 1942, moved under Southwest District Fleet, 2nd Southern Fleet, 21 Naval Base Force; 1 August 1942, got rid of Type 99 bombers (to 31st Kokutai) and became attacker unit only, using Type 97 only. On November 1, 1942 redesignated 932 Kokutai. Thanks to Jim Long for this information.

201 Kōkūtai (201 Ku)

202 Kōkūtai (202 Ku)

Areas of Operation
  A6M Zero

Operated the Zero fighter from Yap Island.

204 Kōkūtai (204 Ku)

Tainan Kōkūtai / 251 Kōkūtai (251 Ku)

Genzan Kōkūtai

252 Kōkūtai (252 Ku)

253 Kōkūtai (253 Ku)

301 Kōkūtai (301 Ku)

Areas of Operation

Iwo Jima (June - July 1944)


321 Kokutai (321 Ku)

552 Kokutai (552 Ku)

582 Kokutai (582 Ku)

634 Kokutai (634 Ku)

Operated E16 Paul in the Philippines. Based at Canacao Seaplane Base (Cavite) with the T-301 Hikotai. Also, a detachment at Tacloban Seaplane Base. References Japanese Naval Air Force Fighter Units and Their Aces 1937-1945 page 234

701 Kokutai (701 Ku)

702 Kokutai (702 Ku)

703 Kokutai (703 Ku)

Misawa Kokutai / 705 Kokutai (705 Ku)

Kisarazu Kokutai / 707 Kokutai (707 Ku)

The Kisarazu Kokutai was established at Kisarazu Airfield.

Operated G4M1 Betty bombers from Vunakanau Airfield near Rabaul. Flew four bombing missions over Guadalcanal during September 1942.

On November 1, 1942 redesignated the 707 Kokutai.

Tail Codes
The group used different tail codes at various dates.

Tail code Dates
R- November 1, 1942 - ?
W1- ?

Kanoya Kokutai (751 Ku)

Takao Kokutai / 753 Kokutai (753 Ku)

Areas of Operation
  G4M Betty

Operated the G4M1 Betty. Tail code "T-XXX" (three numbers). During November 1942 arrived at Koepang Airfield. On November 1, 1942 redesignated 753 Kokutai.

755 Kokutai (755 Ku)

On November 1, 1942 the Genzan Kokutai bomber unit was redesignated as the 755 Kōkūtai.

761 Kokutai (761 Ku)

Areas of Operation
  G4M Betty
Clark Field

801 Kokutai (801 Ku)

Areas of Operation

Departed South Pacific area after October 1942

802 Kokutai (802 Air Group)

Toko Kōkūtai (Toko Ku) / 851 Kokutai (851 Ku)

901 Kokutai (901 Ku)

Transfered to Indian Ocean Area in February 1943.

In January 1945, operated from Toko on Formosa and Hong Kong. Supplied Jakes to the 936 Kokutai.

902 Kokutai (902 Ku)

Rabaul, Guam, Truk.

933 Kokutai (933 Ku)

As of January 1, 1945, 933rd Kokutai in Indochina was absorbed by 936 Kokutai.

936 Kokutai (936 Ku)

As of January 1, 1945, the 933 Kokutai and other units in Indochina were absorbed by the 936 Kokutai. Supplied Jakes from the 901 Kokutai then based at Toko on Taiwan and Hong Kong. Some of these aircraft were immediately pressed into service and not repainted, thus still had their 901 Ku markings.

938 Kokutai (938 Ku)

951 Kokutai (951 Ku)
Activated on 15 December 1944 to streamline enhanced sea-lane protection measures by having Sasebo Ku, Maizuru Ku, Okainawa Ku, 453 Ku, and 256 Ku merged. With the headquarters based at Sasebo the unit had detachments to Chinkai, Kunsan, Saisuto, Hakata, Ohmura, Ibusuki, Koroku, Shanghai, Ryojun, Chintao, Fuko, and Shuzanto covering the South of Japan Sea, East China Sea as well as Genkai straits. Surveillance, ASW, and convoy escort. On 1 July 1945 the unit was reduced to a Suitei-tai only. 951st had 24 N1K1 Rex aircraft on 15 December 1944, but by 1 July 1945 these N1K1s had been removed from the unit and it was left with only 24 3-seat reconnaissance seaplanes (E13 Jake). References: magazine article by Akimoto, 1982.

954 Kokutai (954 Ku)

958 Kokutai (958 Ku)

1022 Kokutai (1022 Ku)

Areas of Operation
Luzon, Cebu

Tail code 1022-XX or 22-XX

Formed on July 10, 1944. Used G4M1 Betty bombers as armed transports. Operated from the Philippines from Clark Field, Lingayen and Cebu.

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