"[I]n a larger sense, we can not dedicate-we can not consecrate-we can not hallow-this ground. The brave men, living and dead, who struggled here, have consecrated it, far above our power to add or detract." -President Abraham Lincoln James M. McPherson, the Pulitzer Prizewinning author ofBattle Cry of Freedom, and arguably the finest Civil War historian in the world, walks us through the site of the bloodiest and perhaps most consequential battle...