Chinjufu-shogun

Chinjufu-shōgun (鎮守府将軍, often translated as "Commander-in-Chief of the Defense of the North"^?) was a military post in classical and feudal Japan. The chinjufu-shōgun, under the command of the sei-i-tai-shōgun (shogun), was primarily responsible for the pacification of the Ezo (Ainu) people of northern Honshū and Hokkaidō, and Japan's defense against them.

The post was originally created in the 8th century, during the Nara period, and a military district, called chinjufu was established as the chinjufu-shōgun's area of authority. It was originally located in the fortress of Tagajō in what is now Miyagi prefecture. However, it was moved further north in 801, after the chinjufu-shōgun at the time, Sakanoue no Tamuramaro achieved a series of victories against the natives, pushing them further north. Once all of Honshū was conquered, or pacified, by the Japanese, the new base at Isawa came to be controlled by the various samurai clans of that region. The castle, along with the chinjufu military district and the position of chinjufu-shōgun, was abandoned in the early 14th century.

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