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.
Battle of the Little Bighorn in 1876, the Lakota and the Cheyenne held a Sun Dance that was also attended by a number of "Agency Indians" who had slipped away from their reservations. During a Sun Dance around June 5, 1876, on Rosebud Creek in Montana, Sitting Bull, the spiritual leader of the Hunkpapa Lakota, reportedly had a vision of "soldiers falling into his camp like grasshoppers from the sky." At the same time US military officials were conducting a summer campaign to force the Lakota and the Cheyenne back to their reservations, using infantry and cavalry in a so-called "three-pronged approach". Col. John Gibbon's