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
Presidency of Ulysses S. Grant the committee's demands and signed the agreement. During the Great Sioux War, Grant came into conflict with Col. George Armstrong Custer after he testified in 1876 about corruption in the War Department under Secretary William W. Belknap (see below). Grant had Custer arrested for breach of military protocol in Chicago and barred him from leading an upcoming campaign against the Sioux. Grant finally relented and let Custer fight under Brig. Gen. Alfred Terry. Two months after Custer's death Grant castigated him in the press, saying "I regard Custer's massacre as a sacrifice of troops, brought on by Custer himself, that