Sioux Wars defeated a force of 1,300 Americans under General George Crook. Crook retreated which helped lead to the infamous Battle of Little Big Horn beginning on June 25. Lieutenant Colonel George Custer, commanding a force of over 600 troops, was badly defeated with the loss of over 300 men killed or wounded, including himself. The next major engagement occurred at Slim Buttes on September 9 and 10. While moving toward Deadwood to secure supplies for Crook's command, elements of the 1st Cavalry commander by Capt Anson Mills located and attacked a Sioux village. The Dull Knife Fight, on November 25, and
9th Cavalry Regiment (United States) scouting for hostile natives, escorting the mail, surveying uncharted land, and constructing roads. That service also included the Battle of Tularosa with Chiricahua Apache warriors led by Victorio in May 1880. The 9th Cavalry was transferred to Fort Riley, Kansas, in 1881, and to Fort Robinson, Nebraska, in 1885. On 5 November 1887, Company H, of the 9th Cavalry fought at the Battle of Crow Agency during the Crow War, at Crow Agency, Montana. The regiment was also patrolled during the Ghost Dance War with the Sioux around the time of the Wounded Knee Massacre and were the last regiment