Eyewitness reports on Custer's campaigns from 1874 through 1876 are told in Arikara Narrative of Custer's Campaign and the Battle of the Little Bighorn, the result of interviews with nine scouts. Arikaras scouted in advance of the U.S. Army for Custer and Reno, reporting enemy Indian movements and seeking to capture their horses. Their accounts of the Battle of the Little Bighorn reveal much about why Custer failed.