Sitting Bull knew who the enemy were – of what tribe.'...They were soon to find out."(Utley 1992: 122–24) Sitting Bull's refusal to adopt any dependence on the US government meant that at times he and his small band of warriors lived isolated on the Plains. When Native Americans were threatened by the United States, numerous members from various Sioux bands and other tribes, such as the North Cheyenne, came to Sitting Bull's camp. His reputation for "strong medicine" developed as he continued to evade the European Americans. After the January 1st ultimatum of 1876, when the US Army began to track down
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