United States Army
Fort Snelling, Saint Paul
Division of the Missouri
Alfred Terry, Winfield Scott Hancock
United States Army, Department of the Platte, United States Volunteers
A subdivision of the Division of the Missouri, the Department of Dakota was established by the United States Army on August 11, 1866 to encompass all military activities and forts within Minnesota, Dakota Territory and Montana Territory. The Department of Dakota was initially headquartered at Fort Snelling, Minnesota, and then moved to St.Paul in March 1867. The department was discontinued in 1911.
(Wyoming Territory became attached to the Department of the Platte on July 25, 1868)