When you consider that twice as many soldiers died of disease while in camp as did those who died in combat (roughly 400,000 to 200,000) did Grant's aggressiveness while commanding the AOP truly result in a larger loss of life than would have occurred with a less aggressive commander? It's hard to say who would have been the best alternative to Grant, and if that commander would have brought the war to a close using less costly tactics, and in what timespan. For discussion sake, let's say another general has much lower battle casualties than Grant and also keeps the prisoner exchange program going (hence much fewer deaths in POW camps) but requires an additional six months to end the war. Since disease was the bigger killer than combat, would lower combat losses and POW deaths be offset by deaths due to disease? Approximately 250,000 Union Soldiers died of disease over the 4 year span of the civil war. At that rate, about 30,000 would die in six months for all Union Armies (not just AOP). About 8,000 Union Soldiers died during Grant's Overland Campaign, and 56,000 soldiers in total (not sure what % North/South) died in prison camps. Even if you were to cut combat deaths in half, and eliminate POW deaths, I wonder if you wouldn't end up with about the same number of Union dead in either scenario.