Sitting Bull the federal government's pacification campaign. During the period 1868–1876, Sitting Bull developed into the most important of Native American political leaders. After the Treaty of Fort Laramie (1868) and the creation of the Great Sioux Reservation, many traditional Sioux warriors, such as Red Cloud of the Oglala and Spotted Tail of the Brulé, moved to reside permanently on the reservations. They were largely dependent for subsistence on the US Indian agencies. Many other chiefs, including members of Sitting Bull's Hunkpapa band such as Gall, at times lived temporarily at the agencies. They needed the supplies at a time when white
Sitting Bull natives joined him for safety in numbers. His leadership had attracted warriors and families, creating an extensive village estimated at more than 10,000 people. Lt. Col. Custer came across this large camp on June 25, 1876. Sitting Bull did not take a direct military role in the ensuing battle; instead he acted as a spiritual leader. A week prior to the attack, he had performed the Sun Dance, in which he fasted and sacrificed over 100 pieces of flesh from his arms. Custer's 7th Cavalry advance party attacked Cheyenne and Lakota tribes at their camp on the Little Big Horn