 The Brulé Sioux under Spotted Tail who had been allies of the Cheyenne and Arapaho had peacefully settled near Fort Laramie.Black Kettle, always seeking peace, signed the Little Arkansas Treaty in October 1865 obligating his band of Southern Cheyenne to move to Indian Territory (present-day Oklahoma).Roman Nose and the Dog Soldiers continued to be hostile and to raid and fight the U.S. army in Kansas and Colorado.