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 River (known as the Greasy Grass River to the Lakota) on June 25, 1876. The U.S. Army did not realize how large the camp was. More than 2,000 Native American warriors had left their reservations to follow Sitting Bull. Inspired by a vision of Sitting Bull's, in which he saw U.S. soldiers being killed as they entered the tribe's camp, the Cheyenne and Lakota fought back. Custer's badly outnumbered troops lost ground quickly and were forced to retreat. The tribes led a counter-attack against the soldiers on a nearby ridge, ultimately annihilating them. The Native Americans' victory celebrations were short-lived.