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.
Goes Ahead Sioux and Cheyenne who were expected to be on either Rosebud Creek or in the Little Bighorn valley. The six Crow scouts were sent with Custer because they were familiar with the Rosebud and Little Big Horn drainage. On June 24, 1876 the Crow scouts were ranging ahead, and they sent back word to Custer that the trail of the Sioux/Cheyenne encampment had moved from the Rosebud valley toward the valley of the Little Bighorn. At first light on June 25, 1876, the morning of the battle, the Crow scouts were at a high point (later known as the Crows