Osami Nagano | |
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永野 修身 | |
![]() Osami Nagano ~1943-45 | |
Minister of the Navy Empire of Japan | |
In office 9 March 1936 – 2 February 1937 | |
Monarch | Shōwa |
Prime Minister | Kōki Hirota |
Preceded by | Ōsumi Mineo |
Succeeded by | Yonai Mitsumasa |
Chief of the Imperial Japanese Navy General Staff | |
In office 9 April 1941 – 21 February 1944 | |
Prime Minister | |
Preceded by | Prince Fushimi Hiroyasu |
Succeeded by | Shimada Shigetarō |
Personal details | |
Born | Kōchi, Kōchi Prefecture, Japan | June 15, 1880
Died | January 5, 1947[1] Sugamo Prison, Tokyo, Occupied Japan | (aged 66)
Awards |
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Military service | |
Allegiance | ![]() |
Branch/service | ![]() |
Years of service | 1900–1947 |
Rank | ![]() ![]() |
Commands |
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Battles/wars | World War I, World War II |
Osami Nagano (永野 修身, Nagano Osami, June 15, 1880 – January 5, 1947) was a Marshal Admiral of the Imperial Japanese Navy and one of the leaders of Japan's military during most of the Second World War. In April 1941, he became Chief of the Imperial Japanese Navy General Staff. In this capacity, he served as the navy's commander-in-chief in the Asia-Pacific theater of World War II until his removal in February 1944. After the war, he was arrested by the International Military Tribunal for the Far East but died of natural causes in prison during the trial.
Nagano was born in Kōchi to an ex-samurai family. In 1900, he graduated from the 28th class of the Imperial Japanese Naval Academy, ranking second in a class of 105 cadets. After completing service as a midshipman on the cruiser Hashidate and the battleship Asahi, he was commissioned an ensign and assigned to the cruiser Asama. During the Russo-Japanese War, he served in a number of staff positions. The closest he came to combat was commanding a land-based heavy naval gun unit during the siege of Port Arthur.[citation needed]
After his promotion to lieutenant in 1905, Nagano served on the battleship Shikishima. From 1905 to 1906, he studied naval artillery and navigation. From 1906 to 1908, he was chief gunnery officer on the cruiser Itsukushima. In 1909, he graduated from the Japanese Naval War College.
In 1910, Nagano was promoted to lieutenant commander and assigned as chief gunnery officer on the battleship Katori. From January 1913 to April 1915, he was a language officer in the United States, during which time he studied at Harvard Law School.
During World War I, Nagano was executive officer on the cruisers Nisshin and cruiser Iwate. In 1918, he was promoted to captain. In 1919, he received his first (and only) ship command, the cruiser Hirado.[3]
From December 1920, Nagano was a military attaché to the United States. In this capacity, he attended the Washington Naval Conference. In November 1923, he returned home, although he returned to the United States on official visits in 1927 and 1933. In December 1923, he was promoted to rear admiral.
A staunch believer in Nanshin-ron , Admiral Nagano played a central role in Japan's decision to go to war with the United States. After Japanese forces occupied southern Indochina on 24 July 1941, the U.S. and its Western Allies froze Japanese assets within their borders thereby resulting in a halt on all oil shipments to Japan.[5] At the end of the month, Nagano informed Emperor Hirohito that the nation's oil supply would run out in two years if the embargo was not lifted.[6] Consequently, he advised that Japan should be ready for war within that timeframe if attempts at diplomacy failed.[7] By September 1941, he and the Army's Chief of Staff, General Hajime Sugiyama, called for Japan to be placed on an immediate war-footing and for an end to all negotiations by mid-October. [8]
According to some Japanese sources, Nagano presented a peace proposal before a conference on November 1, 1941 but this was ultimately struck down by Prime Minister Tojo Hideki.[9][10][unreliable source?].
After learning about the issues of launching a 'surprise attack' on the naval fleet of the United States in Pearl Harbor since he viewed it as a needless diversion of Japan's carrier fleet and a risky proposition for the entire Empire, Nagano initially opposed Admiral Isoroku Yamamoto's planned attack on Pearl Harbor, but reluctantly gave his approval for the attack after Yamamoto threatened to resign as Combined Fleet commander.[11][12] Between 1941 and 1944, at meetings with the top Army staff, Nagano reputedly napped.[13]
In 1943, Nagano was promoted to marshal admiral. By 1944, however, Japan had suffered serious military setbacks and Nagano had lost the confidence of Emperor Hirohito.[14] With the emperor's approval, Prime Minister Hideki Tōjō and Navy Minister Shigetarō Shimada removed Nagano from his post and replaced him. Nagano spent the remainder of the war as an advisor to the government.
After World War II in 1945, the American Occupation forces arrested Nagano. He was charged with Class A war criminal charges before the International Military Tribunal for the Far East in Tokyo. When US naval officers interrogated him, he was described as "thoroughly cooperative," "keenly alert," "intelligent," and "anxious to develop American friendship."[16] He died of a heart attack due to complications arising from pneumonia in Sugamo Prison in Tokyo before the conclusion of his trial.