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 based on the Yellowstone River at the mouth of the Bighorn and reinforced by Gibbon's column. On August 8, 1876, after Terry was further reinforced with the 5th Infantry, the expedition moved up Rosebud Creek in pursuit of the Lakota. It met with Crook's command, similarly reinforced, and the combined force, almost 4,000 strong, followed the Lakota trail northeast toward the Little Missouri River. Persistent rain and lack of supplies forced the column to dissolve and return to its varying starting points. The 7th Cavalry returned to Fort Abraham Lincoln to reconstitute. The regimental commander, Colonel Samuel D. Sturgis, returned