My (Georgia) history teacher said some odd things yesterday. He stated that Abraham Lincoln was the "Devil Incarnate" and justified this by saying that Sherman's March to the Sea destroyed most if not all buildings and establishments. He also said that a very very large portion of the population was killed during the campaign. He summarized it by saying "We started from ground zero after Sherman's march to the sea."

Is there any truth in this? Did the campaign really harm that many people?