Sitting Bull in their land, as specified in the 1868 Treaty of Fort Laramie. It was alarmed at reports of Sioux depredations (encouraged by Sitting Bull). In November 1875, President Grant ordered all Sioux bands outside the Great Sioux Reservation to move onto the reservation, knowing full well that not all would comply. As of February 1, 1876, the Interior Department certified as "hostile" those bands who continued to live off the reservation. This certification allowed the military to pursue Sitting Bull and other Lakota bands as "hostiles". Based on tribal oral histories, historian Margot Liberty theorizes many Lakota bands allied with
Sitting Bull response to poor treatment by the government and in an effort to drive the whites away. Despite being embroiled in the American Civil War, the United States Army retaliated in 1863 and 1864, even against bands which had not been involved in the hostilities. In 1864, two brigades of about 2200 soldiers under Brigadier General Alfred Sully attacked a village. The defenders were led by Sitting Bull, Gall and Inkpaduta. The Lakota and Dakota were driven out, but skirmishing continued into August. In September, Sitting Bull and about one hundred Hunkpapa Lakota encountered a small party near what is now