Yamamoto(1984 — ?)

Yamamoto

Japon

6 min read

MilitaryChef militaire20th CenturyFirst half of the 20th century, from the final years of Japan's Meiji era to World War II in the Pacific

Japanese admiral, commander-in-chief of the Combined Fleet of the Imperial Japanese Navy during World War II. The architect of the surprise attack on Pearl Harbor in 1941, he was one of the leading naval strategists in the Pacific before being shot down in 1943.

Frequently asked questions

Isoroku Yamamoto was the admiral and commander-in-chief of the Combined Fleet of the Imperial Japanese Navy during World War II. The key thing to remember is that he is best known as the mastermind behind the surprise attack on Pearl Harbor in 1941. Contrary to the image of a blind militarist, he fiercely opposed war against the United States, well aware of their industrial might. He played a central role in modernizing Japanese naval aviation, but his death in 1943 during Operation Vengeance was a serious blow to Japan.

Key Facts

  • Born in 1884 in Nagaoka (Japan), he was wounded at the Battle of Tsushima in 1905 during the Russo-Japanese War
  • Studied in the United States (Harvard, 1919-1921) and served there as a naval attaché, which fed his wariness of a war against America
  • Became commander-in-chief of the Combined Fleet in 1939 and planned the attack on Pearl Harbor on 7 December 1941
  • Suffered a decisive defeat at the Battle of Midway in June 1942, the turning point of the Pacific War
  • Died on 18 April 1943, his plane shot down over Bougainville during Operation Vengeance carried out by the United States

Works & Achievements

Plan for the attack on Pearl Harbor (1941)

Surprise naval-air operation against the American Pacific Fleet, a major strategic design that opened the Pacific War.

Doctrine of naval air warfare (1930s)

Championing of carrier-based aviation and aircraft carriers as the primary weapon, over battleships; a vision ahead of its time.

Modernization of Japanese naval aviation (1933-1936)

As head of the Navy's Aeronautics Department, he developed carrier aircraft and pilot training.

The Midway Operation (1942)

A vast offensive plan intended to destroy the American aircraft carriers; it ended in a decisive defeat for Japan.

Opposition to the Tripartite Pact (1936-1940)

As Vice-Minister of the Navy, he fought against the alliance with Nazi Germany and Italy, at the risk of his own life.

Reorganization of the Combined Fleet (1939)

Upon taking command, he modernized the training and doctrine of Japan's principal naval force.

Anecdotes

At the age of 21, the young Isoroku fought at the Battle of Tsushima in 1905 against the Russian fleet. An explosion tore off two fingers from his left hand: the geishas would later nickname him “eighty sen,” because a full manicure cost ten sen per finger.

A student at Harvard University and later a naval attaché in Washington, Yamamoto traveled all across the United States and even visited the oil fields of Texas. From these experiences he drew a conviction he would repeat for the rest of his life: America's immense industrial power made a long war impossible for Japan to win.

Opposed to the war against the United States, he is said to have warned his superiors: “For the first six months, I will win victory after victory; but if the war lasts two or three years, I have no confidence at all.” Pearl Harbor confirmed the first part, Midway the second.

A passionate gambler, Yamamoto loved shogi, go, bridge, and poker. He used to say he would have liked to retire to Monaco to play roulette there, and he drew on his knowledge of probability to think through his strategic bets.

In April 1943, the Americans decrypted a coded message announcing his inspection itinerary. Sixteen P-38 fighters took off to intercept him over the island of Bougainville: his plane was shot down, making him the target of a deliberate assassination operation made possible by intelligence.

Primary Sources

Letter from Yamamoto to Diet member Ryoichi Sasakawa (1940)
If I am told to fight, I will run wild and win victory after victory for the first six months or the first year, but I have absolutely no confidence about the second or third year.
Letter from Yamamoto on the terms of peace (quotation twisted by propaganda) (1942)
To win this war, we would have to dictate the terms of peace in the White House, in Washington.
Memorandum from Admiral Yamamoto to the Navy General Staff on the Hawaii operation (January 1941)
In the event of war with the United States, our only hope is to destroy the American Pacific Fleet on the very first day, through a surprise carrier-borne air attack.
Intercepted and decrypted Japanese radio message (Operation Vengeance) (April 1943)
The Commander-in-Chief of the Combined Fleet will inspect Ballale, Shortland, and Buin on 18 April; arrival at Ballale at 08:00.

Key Places

Nagaoka (Niigata Prefecture)

Yamamoto's birthplace, in northwestern Japan. A memorial museum dedicated to the admiral can be found there today.

Imperial Naval Academy at Eta Jima

Training school for officers of the Japanese navy, near Hiroshima, where Yamamoto pursued his military studies.

Tsushima Strait

Site of the 1905 naval battle against the Russian fleet, where the young Yamamoto was wounded and lost two fingers.

Pearl Harbor (Hawaii)

American naval base struck on December 7, 1941 by the surprise attack devised by Yamamoto.

Midway Atoll

Scene of the June 1942 battle where Yamamoto's fleet suffered a decisive defeat, a turning point in the Pacific War.

Bougainville Island

Island in the South Pacific over which Yamamoto's plane was shot down on April 18, 1943 during Operation Vengeance.

See also