At the end of the Great Sioux War of 1876-77, the Bad Heart Bull family surrendered at the Red Cloud Agency on April 18, 1877, several weeks before Crazy Horse. Following the killing of Crazy Horse in September 1877, the family moved with other northern Oglala to the nearby Spotted Tail Agency. The family fled north with other Oglala, eventually joining Sitting Bull in Canada. After a few years, the Bad Heart Bull family probably returned to the U.S. with other Oglala Lakota, who surrendered at Fort Keogh in 1880.