Sadayoshi Yamada
| Sadayoshi Yamada | |
|---|---|
| Born | November 26, 1892 Fukuoka Prefecture, Japan |
| Died | November 16, 1971 (aged 78) |
| Allegiance |
 Empire of Japan
|
| Service/branch |
 Imperial Japanese Navy
|
| Years of service | 1914-1945 |
| Rank | Vice Admiral |
| Commands held |
Sōryū, Kaga, 25th Air Flotilla, Yokosuka Naval Air Group, 51st Air Flotilla, 101st Air Flotilla, 3rd Air Fleet |
| Battles/wars | |
Sadayoshi Yamada (山田 定義 Yamada Sadayoshi?, 26 November 1892 – 16 November 1971) was a Vice Admiral in the Imperial Japanese Navy during World War II.
A native of Fukuoka prefecture, Yamada graduated from the 42nd class of the Imperial Japanese Naval Academy in 1914, ranked 5th out of 117 cadets. As a midshipman, he was assigned to the cruisers Aso and Yakumo, and on his commissioning as ensign was assigned to the battleships Kawachi and Asahi. In 1917, he returned to school to study latest naval artillery and submarine warfare techniques, as well as naval aviation. He was then assigned to a fighter squadron in Yokosuka, followed by a posting in 1920 as aircrew on the seaplane carrier Wakamiya.
As a lieutenant, Yamada was posted as naval attaché to France from 1920–1923, and was a member of the Japanese delegation at the Versailles Peace Treaty negotiations. On his return to Japan, he was again assigned to fighter groups in Yokosuka and in Kasumigaura. He was promoted to lieutenant commander in 1925, and then to commander after graduation from the Naval Staff College.
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