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
7th Cavalry Regiment September 1866 at Fort Riley, Kansas, as part of an expansion of the regular army following the demobilization of the wartime volunteer and draft forces. From 1866 through 1871, the regiment was posted to Fort Riley and fought in the American Indian Wars. In the Battle of the Washita in 1868, the regiment sustained 22 losses, while inflicting more that 150 deaths on a Cheyenne encampment, mostly women and children . This attack was led by George Armstrong Custer, who later led the 7th Cavalry to the most calamitous defeat of U.S. forces in the Indian Wars. Typical of post-Civil