Tomiji Koyanagi

Tomiji Koyanagi (小柳 富次, Koyanagi Tomiji, 16 July 1893 – 6 August 1978), was an admiral in the Imperial Japanese Navy during World War II.

Tomiji Koyanagi
BornJuly 16, 1893
Niigata Prefecture, Japan
DiedAugust 6, 1978(1978-08-06) (aged 85)[1]
Allegiance Empire of Japan
Service/branch Imperial Japanese Navy
Years of service1914–1945
Rank Vice Admiral
Commands heldWakatake, Iwate, Atago, Kongō
2nd Torpedo Squadron,
Destroyer Squadron 10
Battles/warsWorld War II
oGuadalcanal Campaign
oBattle of Leyte Gulf

Biography

A native of Niigata Prefecture, Koyanagi was a graduate of the 42nd class of the Imperial Japanese Navy Academy in 1914. He served his midshipman duty on the cruiser Aso and battleship Kawachi. Commissioned a sub-lieutenant in 1915, he was assigned to the cruiser Nisshin. After completing torpedo and gunnery schools, he served on the crew of the cruiser Iwate and destroyers Kisaragi, Maki and Kuretake. After graduation from the Navy Staff College in 1926 and his promotion to lieutenant commander, he was assigned his first command: the destroyer Wakatake. He served as an instructor from 1929–1938, specializing in destroyer operations and torpedo warfare, before returning to sea again as the commander of Iwate. In October 1940, he became commander of the cruiser Atago.

At the time of the attack on Pearl Harbor, Koyanagi was captain of the battleship Kongō. He was promoted to rear admiral in December 1942.

Later, Koyanagi commanded Destroyer Squadron 10 (DesRon 10) during the Guadalcanal Campaign.[2] He was appointed Chief of Staff of the IJN 2nd Fleet under Admiral Takeo Kurita in July 1943.

A strong believer in the Kantai kessen naval doctrine of a decisive battle, Koyanagi criticized the battle plans for the Battle of Leyte Gulf in October 1944, as the plan called for concentrating Japanese attacks on enemy transports rather than warships.[3]

During the Leyte campaign, he was aboard the flagship Atago with Kurita when the fleet was ambushed by the American submarines USS Darter and Dace. Atago was hit by four torpedoes from Darter and capsized at 05:53 on 23 October 1944.[4] Koyanagi survived and transferred to the battleship Yamato with Kurita. He was later severely injured by fragments from a near miss on 26 October and hospitalized until August 1945.[5] Surviving the war, Koyanagi was promoted to vice admiral on 1 November 1945, and retired 10 days later.

After the war, Koyagani was interrogated by Lieutenant Commander James A. Field, Jr. of the United States Navy Reserve in Tokyo on 24 October 1945. Field noted that Koyanagi clarified questions that the U.S. Navy strategists had on the Japanese decision to go north rather than enter Leyte Gulf on the morning of 25 October.[6]

Koyanagi died on 6 August 1978.

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References

Books
  • Fuller, Richard (1992). Shokan: Hirohito's Samurai. London: Arms and Armour Press. ISBN 1-85409-151-4.
  • Frank, Richard B. (1990). Guadalcanal : The Definitive Account of the Landmark Battle. New York: Penguin Group. ISBN 0-14-016561-4.
  • Murray, Williamson and Allan R. Millett (2000). A War to Be Won: Fighting the Second World War. Cambridge, Mass.: Harvard University Press. ISBN 0-674-00680-1.
  • Morison, Samuel Eliot (2002). History of United States Naval Operations in World War II. Vol. 12: Leyte, June 1944-January 1945. Chicago: University of Illinois Press. ISBN 0-252-07063-1.

Notes
  1. Nishida, Imperial Japanese Navy.
  2. Frank. Guadalcanal : The Definitive Account of the Landmark Battle
  3. Koyanagi The Pacific War Online Encyclopedia
  4. Atago Combined Fleet
  5. Koyonagi World War II Database
  6. Interrogations Koyohagi USSBS n°35/149
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