In The Fighting Cheyennes, George Bird Grinnell offers a vivid historical and ethnographic account of the Cheyenne people, especially their warfare, leadership, social organization, and resistance during the nineteenth-century Plains conflicts. Written in a sober yet dramatic prose style, the book combines oral testimony, tribal memory, and documentary history to illuminate Cheyenne perspectives often distorted in frontier narratives. Situated at the intersection of early anthropology, military history, and Indigenous studies, it remains a significant text for understanding the cultural logic of Cheyenne warfare and the tragic pressures exerted by U.S. expansion. Grinnell was an American naturalist, conservationist, and ethnographer whose long engagement with Plains peoples, including personal relationships with Cheyenne and Pawnee informants, deeply shaped his work. His experience in the American West and his commitment to recording Native histories before they were further marginalized gave his writing both urgency and unusual authority. Although he wrote within the assumptions of his era, he was notably sympathetic to Indigenous communities and attentive to their own accounts. This book is highly recommended for readers interested in Native American history, the American West, and the recovery of Indigenous voices from colonial archives. It rewards careful reading as both a historical source and an important, if historically situated, act of cultural preservation.