Fort Custer (Montana) Fort Custer (Montana) Fort Custer was established during the Indian wars in the Department of Dakota by the U.S. Army to subjugate the Sioux, Cheyenne and Crow Indians near present-day Hardin, Montana. The post was named for General George Armstrong Custer who died at the Battle of the Little Big Horn. In April and May, 1877, three companies (C, F and G) were moved from Cheyenne Agency, and three companies ( A, B and H) from Fort Yates in the Standing Rock Agency to the Little Big Horn, Montana, under the command of Lieut.-Colonel G. P. Buell, 11th Infantry, where
George Armstrong Custer agencies (reservations) or be considered "hostile". At that time the 7th Cavalry's regimental commander, Colonel Samuel D. Sturgis, was on detached duty as the Superintendent of Mounted Recruiting Service and in command of the Cavalry Depot in St. Louis, Missouri, which left Lieutenant Colonel Custer in command of the regiment. Custer and the 7th Cavalry departed from Fort Abraham Lincoln on May 17, 1876, part of a larger army force planning to round up remaining free Indians. Meanwhile, in the spring and summer of 1876, the Hunkpapa Lakota holy man Sitting Bull had called together the largest ever gathering of