Sitting Bull Public shock and outrage at Custer's death and defeat, and the government's knowledge about the remaining Sioux, led them to assign thousands more soldiers to the area. Over the next year, the new American military forces pursued the Lakota, forcing many of the Native Americans to surrender. Sitting Bull refused to surrender and in May 1877 led his band across the border into the North-Western Territory, Canada. He remained in exile for four years near Wood Mountain, refusing a pardon and the chance to return. When crossing the border into Canadian territory, Sitting Bull was met by the Mounties of
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.