As McPherson shows, by September 1862 the survival of the United States was in doubt. The Union had suffered a string of defeats, and Robert E. Lee's army was in Maryland, poised to threaten Washington. The British government was openly talking of of recognizing the Confederacy and brokering a peace between North and South. Northern armies and voters were demoralized. And Lincoln had shelved his proposed edict of emancipation months before, waiting for a victory that had not come -- that some thought would never come.
McPherson brilliantly weaves these strands of diplomatic, political, and military history into a compact, swi