World War II Armed Forces – Orders of Battle and Organizations

Last Updated 26.04.2005

Imperial Japanese Navy In cooperation with Jeff Donahoo Submarine Squadrons

The format is Japanese style: rank; last name, first name; (Eta Jima class, if known); day.month.year of command and assignment. Commanders marked with * are known to have died.

 

Submarine Squadron 1    under 6th Fleet       • R.Adm Sato Tsutomu 12.41 – 04.42       • R.Adm Yamazaki Shigeaki 04.42 – 10.42       • R.Adm Mito Hisashi 10.42 – 03.43       • R.Adm Koda Takero 03.43 – 01.44     base: Kwajalein, Marshalls     flag: SS I-9     tender: AS Yasukuni Maru     units: – Submarine Division 1                – Submarine Division 2                – Submarine Division 3                – Submarine Division 4     deactivated 01.44 Submarine Squadron 2    under 6th Fleet       • R.Adm Yamazaki Shigeaki 12.41 – 02.42       • R.Adm Ichioka Hisashi 02.42 – 08.42     base: Kwajalein, Marshalls     flags: SS I 7 & I-10     tender: AS Santos Maru     units: – Submarine Division 7                – Submarine Division 8     deactivated 08.42 Submarine Squadron 3    under 6th Fleet       • R.Adm Miwa Shigeyoshi (39) 12.41 – 04.42       • R.Adm Kono Chimaki 04.42 – 01.43       • R.Adm Komazawa Katsumi 01.43 – 09.43     base: Kwajalein, Marshalls     flag: SS I-8     tender: AS Taigei     units: – Submarine Division 11                – Submarine Division 12                – Submarine Division 20     deactivated 09.43 Submarine Squadron 4    under Combined Fleet       • R.Adm Yoshitomi Setsuzi (39) 12.41 – 04.42     base: Hiroshima, Japan     flag: CL Kinu     tender: AS Nagoya Maru     units: – Submarine Division 18                – Submarine Division 19                – Submarine Division 21     deactivated 04.42 Submarine Squadron 5    under Combined Fleet       • R.Adm Daigo Tadashige 12.41 – 07.42    deactivated 07.42     base: Hiroshima, Japan     flag: CL Yura     tender: AS Rio de Janeiro Maru     units: – Submarine Division 28                – Submarine Division 29                – Submarine Division 30     deactivated 04.42 Submarine Squadron 6    under 3rd Fleet       • R.Adm Kono Chimaki 12.41 – 04.42     base: Takao, Taiwan (?)     flag: ?     tender: AS Chogei     units: – Submarine Division 9                – Submarine Division 13     deactivated 10.04.42 Submarine Squadron 7    under 4th Fleet       • R.Adm Onishi Shinzo 11.41 – 06.42       • R.Adm Yoshitomi Setsuzu (39) 04.42 – 01.43       • R.Adm Harada Kaku 01.43 – 12.43       • R.Adm Owada Noburu (06.44)     base: Truk, East Carolines     flag: ?     tender: AS Jungei     units: – Submarine Division 26                – Submarine Division 27                – Submarine Division 33 Submarine Squadron 8    activated 03.42       • R.Adm Ishizaki Noboru 03.42 – 8.43       • R.Adm Ichioka Hisani 08.43 – 08.44       • R.Adm Uozumi Jisaku 08.44 – 02.45 Submarine Squadron 11       • R.Adm Ishizaki Noboro 08.43 – (?)       • R.Adm Daigo Tadashige 04.43 – 11.43 (?)       • R.Adm Nishina Kozo 12.44 – 09.45 Kure Submarine Squadron     under Kure Naval District       • R.Adm Daigo Tadashige 07.42 – 04.43       • V.Adm Yamasaki Shigeaki 12.43 – 07.44       • V.Adm Daigo Tadashige 08.44 – 05.45       • V.Adm Ichioka Hisashi 05.45 – 09.45     base: Kure, Japan