was a Japanese admiral and politician. He served as Chief of the Navy Ministry's Military Affairs Bureau from 1940 to 1944. He was convicted of war crimes during World War II, sentenced to life in prison, and later granted parole due to health problems.
Career Oka graduated from the Naval Academy in 1911 and subsequently completed his education at the Naval Staff College in 1923. In October 1940, he was appointed Chief of the Naval Affairs Bureau. In this capacity, he directly presided over policy-making within the Japanese Navy.
War crimes trial Following the end of World War II, Oka was prosecuted as a war criminal during the International Military Tribunal for the Far East.https://www.trumanlibrary.gov/photograph-records/2017-3271 Upon being convicted, he was sentenced to life imprisonment.https://trove.nla.gov.au/newspaper/article/18448913 In 1954, he was granted parole for health reasons.https://trove.nla.gov.au/newspaper/article/18448913 The War Crimes Tribunal stated that he would be handed over to the custody of the Japanese Minister of Justice, and that should he recover from his illnesses, he would be expected to return to Sugamo Prison.https://web.archive.org/web/20160315025850/https://trove.nla.gov.au/newspaper/article/18448913
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