Northerners and Southerners alike often viewed the Civil War as a revolution. For Confederates, secession promised a return to the era of the Founders when, they presumed, property rights in humans were secure. Unionists found ambiguity, not certainty, in the term revolution, eventually offsetting their fears of unrestrained violence with the belief that destroying slavery might entail unleashing revolutionary social change. Everyone, North and South, grappled with understanding the peculiarities of revolutionary time: its ability to accelerate, to slow down or stop, and even to move backward. As the end of the war drew near, the thought that the centuries-old institution of slavery had collapsed in little more than four years required suspending conventional wisdom about the passage of time. But for enslaved persons, those years seemed an eternity during which unknown thousands had perished before freedom arrived. Both privately and publicly, observers North and South pondered the fearsome toll that slavery and its violent destruction exacted upon the nation.