Civil War historian, instructor, lecturer, newspaper columnist, and author. Shaffer is a member of the Society of Civil War Historians, Historians of the Civil War Western Theater, and the Georgia Association of Historians. He teaches Civil War Courses at Kennesaw State University's College of Graduate and Professional Education and at Emory University, and frequently speaks to various groups across the country.

Civil War historian, instructor, lecturer, newspaper columnist, and author. Shaffer is a member of the Society of Civil War Historians, Historians of the Civil War Western Theater, and the Georgia Association of Historians. He teaches Civil War Courses at Kennesaw State University's College of Graduate and Professional Education and at Emory University, and frequently speaks to various groups across the country.