James M. McPherson is a distinguished Civil War historian. He won the 1989 Pulitzer Prize for his book BATTLE CRY OF FREEDOM: THE CIVIL WAR ERA. His other publications include MARCHING TOWARD FREEDOM: BLACKS IN THE CIVIL WAR, Second Edition (1991); ORDEAL BY FIRE: THE CIVIL WAR AND RECONSTRUCTION, Third Edition (2001); ABRAHAM LINCOLN AND THE SECOND AMERICAN REVOLUTION (1991); FOR CAUSE AND COMRADES: WHY MEN FOUGHT IN THE CIVIL WAR (1997), which won the Lincoln Prize in 1998; CROSSROADS OF FREEDOM: ANTIETAM (2002); HALLOWED GROUND: A WALK AT GETTYSBURG (2003); and TRIED BY WAR: ABRAHAM LINCOLN...