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.
3rd Cavalry Regiment (United States) North Dakota, South Dakota, and Nebraska. The 3rd Cavalry became the main cavalry force for Department operations in the Black Hills region. During the summer of 1876, the regiment participated in the Little Big Horn Campaign against the Sioux and Cheyenne. On 17 March, elements of the 3rd Cavalry fought alongside the 2nd Cavalry Regiment at the Battle of Powder River. During this fierce engagement, PVT Lorenzo E. Meyers of M Company was wounded, and saddler Jeremiah J. Murphy of F Company and blacksmith Albert Glawinski of M Company attempted to rescue him. The wounded man was cut limb from