Thomas Weir (American soldier) Thomas Weir (American soldier) Captain Thomas Benton Weir (b. September 28, 1838 -– d. December 9, 1876) was an officer in the 7th Cavalry Regiment (United States), notable for his participation in the Battle of the Little Bighorn, also known as Custer's Last Stand. Weir served under General George Armstrong Custer during the American Civil War, and after the war continued serving with Custer up to the famous battle in 1876. During the Little Bighorn Battle, Weir disobeyed orders to remain in a defensive position at Reno Hill and led a cavalry group that attempted to come to Custer's aid.
George Armstrong Custer Volunteer Service: February 1, 1866<br> Lieutenant Colonel, 7th Cavalry: July 28, 1866 (killed at the Battle of the Little Bighorn, June 25, 1876)<br> On June 3, 1865, at Sheridan's behest, Major General Custer accepted command of the 2nd Division of Cavalry, Military Division of the Southwest, to march from Alexandria, Louisiana, to Hempstead, Texas, as part of the Union occupation forces. Custer arrived at Alexandria on June 27 and began assembling his units, which took more than a month to gather and remount. On July 17, he assumed command of the Cavalry Division of the Military Division of the Gulf