Stephen W. Sears, author of twelve prior Civil War volumes, reassesses the Eastern Theater in Lincoln’s Lieutenants: The High Command of the Army of the Potomac. It explores two topics germane to the modern military. Strategists will note that the Army of the Potomac was the most important Northern force and fought in the preeminent theater. Russell F. Weigley claims that this area “offered the most promising opportunity for a short war and thereby the limitation of costs and destructive violence.” Students of civil-military relations will focus on the relative politicization of the officer corps and whether President Abraham Lincoln could impose his strategic vision on commanders.