Fort Buford State Historic Site

Fort Buford was a United States Army Post at the confluence of the Missouri and Yellowstone rivers in Dakota Territory, present day North Dakota, and the site of Sitting Bull's surrender in 1881.

Company C, 2nd Battalion, 13th Infantry, 3 officers, 80 enlisted men and 6 civilians commanded by Capt. William G. Rankin, first established a camp on the site on June 15, 1866, with orders to build a post, the majority of which was built using adobe and cottonwood enclosed by a wooden stockade. The fort was named after the late Major General John Buford, a Union Army cavalry general during the American Civil War.

Source: Wikipedia