This regimental history covers the activities and engagements of the Ninety-first OVI from its organization in July 1862 until the end of the war. Most of the troops were recruited from the counties of Adams, Scioto, Lawrence, Gallia, Jackson, and Pike. Through the letters of Adams County, Ohio, native, Lt. Col. Benjamin Franklin Coates, the author brings to life and chronicles the day-to-day events of the movement of this Southern Ohio regiment. Also included is a summary of the lives of the men of Company C. Seventy-four percent of the men in this company were born in Ohio. Others listed their places of birth as Pennsylvania, Virginia, New York, Vermont, Maryland, Tennessee, Kentucky, and Indiana, as well as Germany, England, Ireland, and France.