4th Cavalry Regiment (United States) companies of the 4th Cavalry to Fort Clark. This time Mackenzie led a larger and more extensive expedition into Mexico, restored a system of patrols, and reestablished peace in the devastated region of South Texas. Outside Texas, Mackenzie and the 4th Cavalry administered and controlled the Kiowa-Comanche and the Cheyenne-Arapaho reservations for several years, and, after the defeat of George Armstrong Custer's command at the Battle of Little Bighorn in June 1876, forced Crazy Horse and his band of Sioux and the Northern Cheyennes to surrender. In the autumn of 1879, Mackenzie with six companies of the 4th Cavalry subdued
7th Iowa Volunteer Cavalry Regiment the Battle of Killdeer Mountain and in the Battle of the Badlands. Units of the regiment were at Camp Rankin on the South Platte in January, 1865 when more than 1,000 plains Indians attacked the fort and stage station at Julesburg during the Sioux Wars following the Sand Creek Massacre. In the Battle of Julesburg, 14 men of the 7th were killed, including 4 non-commissioned officers. Company F of the regiment accompanied Colonel James H. Kidd's column of the Powder River Expedition in 1865 to the Powder and Tongue river valley's in Dakota Territory and Montana Territory. The regiment was