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 how much. By dividing his forces, Custer could have caused the defeat of the entire column, had it not been for Benteen's and Reno's linking up to make a desperate yet successful stand on the bluff above the southern end of the camp. The historian James Donovan believed that Custer's dividing his force into four smaller detachments (including the pack train) can be attributed to his inadequate reconnaissance; he also ignored the warnings of his Crow scouts and Charley Reynolds. By the time the battle began, Custer had already divided his forces into three battalions of differing sizes, of which