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 the northeast, causing a breakdown in the command structure and panic among the troops. Many of these men threw down their weapons while Cheyenne and Sioux warriors rode them down, "counting coup" with lances, coup sticks, and quirts. Some Native accounts recalled this segment of the fight as a "buffalo run." Captain Frederick Benteen, battalion leader of Companies D, H and K, recalled his observations on the Custer battlefield on June 27, 1876 A Brulé Sioux warrior stated: "In fact, Hollow Horn Bear believed that the troops were in good order at the start of the fight, and kept their