Nishizō Tsukahara

After his promotion to lieutenant in 1914, he was assigned to Umikaze, and was chief navigator on Mogami in 1916, followed by Chitose, repair ship Kanto, and battlecruiser Ibuki.

He was sent to the United States and Europe from 1925–1926, and on his return was assigned as executive officer to the aircraft carrier Hōshō.

The exact composition was tailored by the Imperial Japanese Navy Air Service to the location and mission.

Afterwards the 11th Air Fleet with the help of its dedicated supporting ships moved forward and engaged in operations flying during the Solomon Islands campaign from Rabaul, New Britain and other locations.

[3] Soon after this change he fell ill, was relieved and replaced in Rabaul by Vice-Admiral Jin'ichi Kusaka on October 1, 1942.

After recovering from illness, Tsukahara was appointed Director of Naval Air Command from December 1, 1942 to September 15, 1944.