United States Cavalry States Cavalry fought in virtually every campaign in the north during the American Civil War. The U.S. Cavalry played a prominent role in the American Indian Wars, particularly in the American Old West. Particularly notable were the 7th Cavalry, associated with General George Armstrong Custer and the Battle of the Little Bighorn, and the 9th and 10th Cavalry, the Buffalo Soldiers. Infantry units, called by the Indians "walkaheaps", were also involved and in some cases were the main force deployed. Infantry, when mounted, were called "mounted infantry"; they lacked training and skill in horsemanship and cavalry tactics. A notable cavalry
Henry Armstrong Reed Custer. Heavily influenced by his military uncles, he followed in their footsteps and left Monroe in May 1876, with his sister Emma, for Fort Abraham Lincoln in the Dakota Territory. There, he was hired on May 10 to serve as a beef herder for the 7th Cavalry Regiment, which was under the command of George Armstrong Custer. Reed joined the 7th Cavalry Regiment shortly after the start of the Great Sioux War of 1876–77 in the Montana Territory, part of the larger American Indian Wars. While Reed was never officially enlisted as a soldier, he volunteered his services as such