The 8th Cavalry Regiment is a regiment of the United States Army formed in 1866 during the American Indian Wars. The 8th Cavalry continued to serve under a number of designations, fighting in every other major U.S. conflict since, except World War I, when it was not deployed to Europe because it was already engaged in the Punitive Expedition in Mexico from 1916 to 1920. It is currently a component of the 1st Cavalry Division.
History
The regiment originally was organized as horse cavalry in 1866 – a designation under U.S. military doctrine that emphasized both light cavalry and dragoon-type mounted and dismounted fighting roles – until 1942. It served on foot during World War II and Korea, with some elements converting to airmobile infantry for Vietnam, while others were detached and assigned to West Germany as part of an armored task force to resist any potential Soviet incursion. It became a mechanized force in the 1970s. It has been brigaded or otherwise attached to various larger temporary and permanent Army commands throughout its history. Currently, it is a component of the 1st Cavalry Division, a major subordinate command of the U.S. Third Mobile Armored Corps comprising a 19,000 soldier, heavy armored division stationed at Ft. Cavazos, Texas. As one of the two "on-call" heavy contingency force divisions of the Army, the First Team has an on-order mission to deploy by sea, air or land to any part of the world on a short notice.

Indian Wars (1866–90) The 8th Cavalry Regiment was constituted 28 July 1866 and was organized as a regiment on 21 September 1866 at Camp Reynolds, Angel Island, California. The enlisted soldiers were "composed chiefly of men enlisted on the Pacific Coast, and included many of the class styled 'Forty-niners'; men who had worked months or years in the mines and were typical specimens of the roving order of citizens. Many of them were wild characters who enlisted in the same spirit of adventure which led them to the frontier, and typically had difficulty in adapting themselves to the conformity of a military life." Many desertions followed, the number reaching 41% by the end of 1867. The officers assigned to the regiment were all veterans of the Civil War. John Irvin Gregg was its first colonel, with Thomas Devin as lieutenant colonel; both had been generals of volunteers and commanded cavalry divisions during the war. The Eighth Cavalry would serve on the frontier throughout the late 19th century.

The 8th was actively engaged in trying to control various Native American tribes and bands in Nevada, Oregon, Arizona, New Mexico and Texas in the Indian Wars between 1867 and 1888. Two years after the capture of Geronimo, they were transferred to South Dakota, Montana and North Dakota where they participated in several actions.

From December 1866 companies of the 8th Cavalry were involved in the Snake War, replacing California and Oregon Volunteer companies that had been fighting the Snakes in Nevada and Oregon during the American Civil War. Many of the 8th's soldiers were experienced frontier soldiers that had been serving with California Volunteer units fighting Indians (including the Snakes) during the Civil War and had reenlisted with the U.S. Army following the disbanding of their Volunteer units. From December 1867 to January 1868, the headquarters was moved from Camp Whipple, AZ, to Churchill Barracks, NV. In May, headquarters was moved to Camp Halleck, Nevada, where it remained till 5 May 1870, when it was again moved to Fort Union, New Mexico. During this time Company L engaged in an action in Hell Canyon, Arizona, for which Corporal John James Mitchell received the Medal of Honor. The several troops took stations at Fort Union, Fort Craig, Fort Selden, Fort Wingate, Fort Bascom, and Fort Stanton, in New Mexico, and Fort Garland, in the Colorado Territory. The duties during this period were of almost continuous field service by troops or detachments, scouting for Apaches and Navajo, furnishing guards and escorts.
During active combat against the Chiricahua Apaches headed by Cochise, during a battle at Rocky Mesa in the Chiricahua Mountains on 20 October 1869, the following were awarded the Medal of Honor for gallantry in an engagement against a group of Apache warriors subsequent to attacks by this group on a stagecoach and a crew of cowboys:





