He was starved into surrendering
Sitting Bull and Gall, two of the battle's key figures, departed for Canada after the Battle of the Little Bighorn. Crazy Horse stayed in the United States. It was a choice that altered his life. While the Sioux faced ongoing hostilities from General Crook during a terrible winter that nearly wiped off the tribe, Crazy Horse proceeded to Big Butte to harass white miners in the Black Hills.
Colonel Nelson A. Miles chased him as part of a stepped-up army operation to compel all Native Americans to visit the government offices. Colonel Nelson A. Miles attempted to make a deal with Crazy Horse after recognizing the tribe's struggle for existence and pledging to assist the Sioux and treat them decently.
Soldiers shot and killed numerous messengers whom Crazy Horse dispatched to negotiate the bargain as Crazy Horse escaped. Until the onset of winter, Miles attacked Crazy Horse's camp frequently.
As a result of the winter's incapacities, Crazy Horse bargained with Lieutenant Philo Clark, who gave the starving Sioux their reservation in exchange for their submission. The two sides agreed.