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 break back to the south where Reno and Benteen could have provided assistance. Two men from the 7th Cavalry, the young Crow scout "Ashishishe" (known in English as Curley) and the trooper Peter Thompson, claimed to have seen Custer engage the Indians. The accuracy of their recollections remains controversial; accounts by battle participants and assessments by historians almost universally discredit Thompson's claim. Archaeological evidence and reassessment of Indian testimony has led to a new interpretation of the battle. In the 1920s, battlefield investigators discovered hundreds of .45–55 shell cases along the ridge line known today as Nye-Cartwright Ridge, between South