Thomas Mower McDougall subsequently he was appointed Captain, 15 Dec 1875. In 1876 Captain McDougall commanded Company B and accompanied the 7th Cavalry Regiment, under command of Lt. Col. George A. Custer in its fateful departure from Fort Abraham Lincoln to participate in what became known as the Great Sioux War of 1876, which culminated in the Battle of the Little Bighorn, also known as Custer's Last Stand which occurred on June 25–26, 1876. On May 17, 1876, the 7th Cavalry left their base at Fort Abraham Lincoln near present day Mandan, North Dakota to join in a campaign against the Sioux Indians.
10th Cavalry Regiment (United States) "the rescue" at the conclusion of the Battle of Tayacoba. Fitz Lee Private, Troop M, 10th Cavalry Regiment during "the rescue" at the conclusion of the Battle of Tayacoba. William H. Thompkins Private, Troop G, 10th Cavalry Regiment during "the rescue" at the conclusion of the Battle of Tayacoba. George H. Wanton Private, Troop M, 10th Cavalry Regiment during "the rescue" at the conclusion of the Battle of Tayacoba. He was later a Master Sergeant in the U.S. Army. Following the end of the Spanish–American War, the 10th Cavalry was deployed to the Philippine Islands in what was known then