The chinjufu shōgun (鎮守府将軍, literally, “commander-in-chief of the central peacekeeping headquarters”),[1] also translated loosely as “commander-in-chief of the defense of the north”, was a military post in classical and feudal Japan.
Under the command of the seii taishōgun, the chinjufu shōgun was primarily responsible for the pacification of the Ezo people of northern Honshū and Hokkaidō, and Japan's defense against them.
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.