Thomas Custer in the Yellowstone Expedition of 1873, where he fought in the Battle of Honsinger Bluff, and the Black Hills Expedition of 1874. Custer was appointed captain in 1875 and given command of Company C of the 7th Cavalry. In 1874, at the trading post at Standing Rock Agency, Custer participated in the arrest of chief Rain-in-the-Face (Lakota), suspected in the 1873 murder of Dr. John Honsinger. During the 1876 Little Bighorn campaign of the Black Hills War, he served as aide-de-camp to his older brother Lt. Col. George A. Custer and died with his brother on June 25, 1876. Lt.
Battle of the Little Bighorn see in the distance native warriors on horseback shooting at objects on the ground. By this time, roughly 5:25 pm, Custer's battle may have concluded. The conventional historical understanding is that what Weir witnessed was most likely warriors killing the wounded soldiers and shooting at dead bodies on the "Last Stand Hill" at the northern end of the Custer battlefield. Some contemporary historians have suggested that what Weir witnessed was a fight on what is now called Calhoun Hill. The destruction of Keogh's battalion may have begun with the collapse of L, I and C Company (half of it) following