Battle of the Little Bighorn southeastern Montana Territory. The fight was an overwhelming victory for the Lakota, Northern Cheyenne, and Arapaho, who were led by several major war leaders, including Crazy Horse and Chief Gall, and had been inspired by the visions of Sitting Bull ("Tȟatȟáŋka Íyotake"). The US 7th Cavalry, a force of 700 men, suffered a major defeat while under the command of Lieutenant Colonel George Armstrong Custer (formerly a brevetted major general during the American Civil War). Five of the 7th Cavalry's twelve companies were annihilated and Custer was killed, as were two of his brothers, a nephew and a brother-in-law. The
Bury My Heart at Wounded Knee Hills, angering the Lakota and Dakota living there. A peace council in 1875 tried to arrange for the US government to either purchase the mineral rights or outright ownership of the Black Hills, but both proposals were rejected by the Sioux. In 1876, a series of battles occur between the Sioux and US troops which initially ends when the Sioux defeat General Custer and his troops at the Battle of Little Bighorn on June 25. The humiliated US Army sends a peace council to sign a treaty that forces the Sioux out of the Black Hills to the Missouri River.