Winfield Scott Edgerly 27, 1875. From May to September 1876, the 7th Cavalry, including Edgerly, participated in the Sioux Expedition. Edgerly was promoted to first lieutenant in the 7th Cavalry effective June 25, 1876. The regiment was engaged in the Battle of the Little Bighorn on June 26–27, 1876. Edgerly was the second in command of Company D, serving under Captain Thomas Weir; Company D was assigned to Captain Frederick Benteen's Battalion. Prior to the battle, Lieutenant Colonel George Armstrong Custer was discussing upcoming events with his junior officers; Edgerly expressed enthusiasm about the possibility of success; Custer replied that success depended on
Battle of the Little Bighorn Riley, Kansas, during which time it fought one major engagement and numerous skirmishes, experiencing casualties of 36 killed and 27 wounded. Six other troopers had died of drowning and 51 in cholera epidemics. In November 1868, while stationed in Kansas, the 7th Cavalry under Custer had successfully routed Black Kettle's Southern Cheyenne camp on the Washita River in the Battle of Washita River, an attack which was at the time labeled a "massacre of innocent Indians" by the Indian Bureau. By the time of the Little Bighorn, half of the 7th Cavalry's companies had just returned from 18 months of