Sylvanus Cadwallader, a war correspondent for the Chicago Times and later for the New York Herald, was attached to General Grant's headquarters from 1862 to 1865. He enjoyed rare access to personalities (Lincoln, Sheridan, and Lee) and events (Vicksburg, Chattanooga, City Point, and Potomac), and he makes them come alive here. Cadwallader also includes information about his own role in constraining and concealing Grant's drinking. Through...