Marquis was a vice admiral in the Imperial Japanese Navy during World War II. Biography Born in Chiyoda, Tokyo into a kuge family of court nobility related to the Fujiwara aristocracy, Daigo was a graduate of the Gakushuin Peers' school. He went on to graduate from the 40th class of the Imperial Japanese Naval Academy in 1912. His rank on entering was only 126th out of 150 cadets, but he improved his scores, so that he graduated at 17th out of 144. Daigo served as a midshipman on the cruiser and battleship . As an ensign, he was assigned to the cruiser . After his promotion to sub-lieutenant in 1913, he took time out to attend a session of the House of Peers as was obligatory for members of his social class. He then returned to active service on the battleship and destroyer . Daigo was promoted to lieutenant in 1918, and after taking courses in torpedo warfare, was assigned to submarines, serving on , and then becoming captain of , followed by . He also served on the cruiser in 1924. After promotion to lieutenant commander in 1924, he was captain of in 1926, and chief torpedo officer on the battleship later the same year. In the 1930s, Daigo was captain of a large number of cruisers in rapid succession: , , , , , and . He was promoted to rear admiral on 15 November 1940. Daigo commanded Submarine Squadron 5 (Subron 5), with his flag on the light cruiser at the start of the Pacific War. At the time of the attack on Pearl Harbor, Subron 5 was covering the first wave of the Malaya Invasion Force south of the Cape of Camau, French Indochina. On 9 December 1941, Subron 5 was ordered to pursue and sink the Royal Navy Force Z (battleship , battlecruiser and supporting destroyers). Although Yura received word from that the British ships were spotted, due to poor wireless reception, the signal was unclear and the British vessels were overwhelmed by torpedo bombers of the 22nd Air Flotilla from bases in Indochina before Yura and her submarines could take action. Subron 5 was then assigned to the invasion of Sarawak from 13–26 December, covering landings in Brunei, Miri, Seria, and Kuching. The 2,500 men of the "Kawaguchi Detachment" and the No. 2 Yokosuka Special Naval Landing Force (SNLF) quickly captured Miri's airfield and