松平容保
On 9 July 1912, he was promoted to full admiral. Dewa Shigeto was the first non-Satsuma person (and the first Aizu person) to attain the rank of full admiral in the Imperial Japanese Navy. The first person of Aizu background to attain the rank of admiral was Hidematsu Tsunoda, and Matsudaira Morio the son of the former Aizu lord Matsudaira Katamori as a rear admiral.