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
George Armstrong Custer of the Potomac reorganized under the command of Major General Philip Sheridan, Custer (now commanding the 3rd Division) led his "Wolverines" to the Shenandoah Valley where by the year's end they defeated the army of Confederate Lieutenant General Jubal Early in the Valley Campaigns of 1864. During May and June, Sheridan and Custer (Captain, 5th Cavalry, May 8 and Brevet Lieutenant Colonel, May 11) took part in cavalry actions supporting the Overland Campaign, including the Battle of the Wilderness (after which Custer ascended to division command), and the Battle of Yellow Tavern (where J.E.B. Stuart was mortally wounded). In the