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Imperial Japanese Navy ended in 1947.
Imperial Japanese Navy was created in 1869.
For Japan, the leaders were Admirals Yamato (commander-in-chief, Imperial Jap Navy) and Nagumo (commander, Jap Strike Froce)
Admiral Chuichi Nagumowas an admiral in the Imperial Japanese Navy during World War II.
The Navy doesn't have Generals - they have Admirals.