Baron was a lieutenant general in the early Imperial Japanese Army.Kowner, Historical Dictionary of the Russo-Japanese War, p. 389-390.

Biography Tsukamoto was born as the third son to a samurai named Inomichi Juzaemon of the Ogaki Domain (present day Gifu prefecture), and was adopted into the Tsukamoto family as a child. As a young samurai, he commanded a squad dispatched by the domain during the suppression of the anti-Shogunate forces in the Second Chōshū expedition; however, he later fought for the pro-imperial Satchō Alliance when the domain changed its alliance in the Boshin War. In 1872 he was commissioned as a second lieutenant in the fledgling Imperial Japanese Army. He was commander of the 6th Battalion during the 1874 Taiwan Expedition. Afterwards, he was stationed at the Kumamoto Garrison, and participated in suppression of the Satsuma Rebellion from February to October 1877.

During the First Sino-Japanese War Tsukamoto was commander of the IJA 6th Infantry Regiment, and served with distinction at the Battle of Pyongyang. After the war, he served as commandant of the Army Staff College and Chief of Staff of the IJA 6th Infantry Division. In September 1897, he was promoted to major general.

Tsukamoto commanded the IJA 21st Infantry Brigade during the Boxer Rebellion and early in the Russo-Japanese War, including the Battle of Nanshan. In September 1904, he was promoted to lieutenant general. He succeeded General Ogawa Mataji as commander of the IJA 4th Infantry Division after the latter was wounded in combat during the Battle of Liaoyang. He continued to command the division through the Battle of Mukden. After the end of the war, he was reassigned to command the IJA 9th Infantry Division.

In September 1907, Tsukamoto was ennobled with the title of baron (danshaku) under the kazoku peerage system. He left active service in December 1908, and died in 1912. He was posthumously given the honorary title of Junior Second Court Rank『官報』第8570号「叙任及辞令」January 17, 1912

Decorations 1893 - Order of the Sacred Treasure, 3rd class 『官報』第3131号「叙任及辞令」December 5, 1893 1895 - Order of the Rising Sun, 3rd class 『官報』第3693号「叙任及辞令」October 19, 1895 1895 - Order of the Golden Kite, 4th class 『官報』第3693号「叙任及辞令」October 19, 1895 1905 - Grand Cordon of the Order of the Sacred Treasure『官報』第6727号「叙任及辞令」December 1, 1905 1906 - Grand Cordon of the Order of the Rising Sun 『官報』号外「叙任及辞令」December 30, 1906 1906 - Order of the Golden Kite, 2nd class『官報』号外「叙任及辞令」December 30, 1906

Foreign 1901 - Netherlands - Order of Orange-Nassau, Grand Officer『官報』第5531号「叙任及辞令」December 09, 1901

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