Mito rebellion 水戸幕末争乱
Part of Bakumatsu conflicts
Shogunate troops moving to quell the Mito rebellion in 1864. "Takeda Kōunsai at Mt. Tsukuba" by Utagawa Kuniteru III
Date May 2, 1864 – January 14, 1865 (8 months, 1 week and 5 days) Location Eastern Japan Result Shogunate victory
Belligerents
Tengutō  Shishido Domain Local samurai and kokugakusha volunteers	Tokugawa shogunate  Mito Domain  Sagara Domain  Suwa Domain  Matsumoto Domain Iida Domain  Takasaki Domain  Kasama Domain
Commanders and leaders
Takeda Kōunsai  Yamakuni Hyōbu  Matsudaira Yorinori  Kameyama Yoshiharu	Tokugawa Yoshinobu Takenaka Shigekata Ichikawa Sanzaemon Tanuma Okitaka Yajima Denzaemon[1] Shiohara Hikoshichi[1][2]
Strength
2,000	About 10,000
Casualties and losses
About 1,300 rebels killed, around 353 were executed, and 100 died in captivity	Around 6,700 shogunate members killed

The Mito rebellion (水戸幕末争乱, Mito bakumatsu sōran), also called the Kantō Insurrection or the Tengutō Rebellion (天狗党の乱, tengutō no ran), was a civil war that occurred in the area of Mito Domain in Japan from May 2, 1864 to January 14, 1865. It involved an uprising and terrorist actions against the central power of the Shogunate in favour of the sonnō jōi ("Revere the emperor, expel the barbarians") policy.^[3]

A shogunal pacification force was sent to Mount Tsukuba on 17 June 1864, consisting of 700 Mito soldiers led by Ichikawa, with 3 to 5 cannons and at least 200 firearms, as well as a Tokugawa shogunate force of 3,000 men with over 600 firearms and several cannons.^[4]

As the conflict escalated, on 10 October 1864 at Nakaminato, the shogunate force of 6,700 was defeated by 2000 insurgents, and several shogunal defeats followed.^[5]

The insurgents were weakening, however, dwindling to about 1,000. By December 1864 they faced a new force under Tokugawa Yoshinobu (himself born in Mito) numbering over 10,000, which ultimately forced them to surrender.^[6]

The uprising resulted in 1,300 dead on the rebels' side, which suffered vicious repression, including 353 executions and approximately 100 who died in captivity.^[7]

• Mito and Hikone had been hostile since the Sakurada Gate incident in 1860. Mito and Hikone were reconciled by Tsuruga, the death place of Tengutō members, after 110 years of the incident.
• Nuclear dense zones of Japan are concentrated near Mito and near Tsuruga, these two places are related by the Tengutō rebellion. Especially, Jōyō (Ōarai, a neighbor of Mito) and Monju (Tsuruga) are two sodium-cooled fast reactors in Japan.

• Mito Domain
• Shinpūren rebellion

• Totman, Conrad. (1980). The Collapse of the Tokugawa Bakufu, 1862–1868 University of Hawaii Press, Honolulu, ISBN 0-8248-0614-X