My Life on the Plains is an autobiographical first-hand account of the Indian Wars of 1867-1869, detailing the winter campaign of 1868 in which Custer led the 7th US cavalry against the Cheyenne Indians. The book is a historical document of the perspectives and attitudes of it's age and author as well as an account of army life during the expeditions of the Indian Wars. Expect a fair amount of masculine bravado, historical fact-bending and quite a few stomach-turning descriptions of violence from both the Indians and the cavalry.