Jisaku Okada (岡ç° 次ä½Â, 1893 â June 4, 1942) was an Imperial Japanese Navy captain. During his career he was the commander of the seaplane tender and aircraft carrier . A couple of months before the start of the Second World War he was given the command of the . He was killed in action during the Battle of Midway when the ship was attacked by American dive bombers. Okada was posthumously promoted to rear admiral.