Isoroku Yamamoto (山本 五十六, Yamamoto Isoroku?, 24 April 1884 – 18 April 1943) was a Japanese Naval Marshal General and the commander-in-chief of the Combined Fleet during World War II, a graduate of the Imperial Japanese Naval Academy
Yamamoto held several important posts in the Imperial Japanese Navy, and undertook many of its changes and reorganizations, especially its development of naval aviation. He was the commander-in-chief during the decisive early years of the Pacific War and so was responsible for major battles such as Pearl Harbor and Midway. He died during an inspection tour of forward positions in the Solomon Islands when his aircraft (a Mitsubishi G4M "Betty" bomber) was shot down during an ambush by American P-38 Lightning fighter planes. His death was a major blow to Japanese military morale during World War II.
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Yamamoto was born as Isoroku Takano (高野 五十六, Takano Isoroku?) in Nagaoka, Niigata. His father was Takano Sadayoshi (高野 貞吉, Takano Sadayoshi?), an intermediate samurai of the Nagaoka Domain. "Isoroku" is an old Japanese term meaning "56"; the name referred to his father's age at Isoroku's birth.
In 1916, Isoroku was adopted into the Yamamoto family (another family of former Nagaoka samurai) and took the Yamamoto name. It was a common practice for Japanese families lacking sons to adopt suitable young men in this fashion to carry on the family name. In 1918 Isoroku married Reiko Mihashi, with whom he had two sons and two daughters.

After graduating from the Imperial Japanese Naval Academy in 1904, Yamamoto served on the cruiser Nisshin during the Russo-Japanese War. He was wounded at the Battle of Tsushima, losing two fingers (the index and middle fingers) on his left hand, as the cruiser was hit repeatedly by the Russian battleline. He returned to the Naval Staff College in 1914, emerging as a Naval Major (Lieutenant Commander) in 1916.

ولد عندما كان والده في السادسة والخمسين، وتم تبنيه لاحقا ليحفظ اسم عائلة ياماموتو التي لم تنجب ولكي يحفظ اسمها وذلك امر كان معمول به في اليابان القديمة. لا يعرف في الواقع عن والديه شيئا لكن يمكننا ان نستنتج انه على الاقل يتيم اجتماعي مع الارجية ان يكون قد تيتم وهو صغير لانه تم تبنيه.

يتيم اجتماعي.