Earl J. Hess is associate professor of history at Lincoln Memorial University. He is author of many books on the Civil War, including, most recently, The Civil War in the West: Victory and Defeat from the Appalachians to the Mississippi.Mark V. Tushnet, professor of law at Georgetown University Law Center, is author, coauthor, or editor of twenty books, including a two-volume history of Thurgood Marshall's years on the Supreme Court.