This unusual book is an overview of the Civil War history of a man who really wasn't famous during the war, but who became President later. Rutherford B. Hayes commanded a unit which missed most of the major battles of the Civil War, but which was in some interesting fights nonetheless. The 23rd Ohio Volunteer Infantry fought mainly in what is now West Virginia, as well as in the Shenandoah Valley. Hayes was a good officer, but not a great one, and so the book tells a story about a man who never would have been famous just from his military experience. Because he was later elected to high office, though, his story has been preserved.
The book provides helpful insights into the "less famous" battles, and the ways in which they were fought, but is otherwise not exceptional. Hayes himself just doesn't come to life in the book, which is its real weakness.