On Sherman, see Victor Davis Hanson's book "The Soul of Battle: From Ancient Times to the Present Day, How Three Great Liberators Vanquished Tyranny," assuming you aren't too wedded to current propaganda to look at things in another way.
Civil War fanatics might appreciate the movie, "Ride with the Devil." Long, earnest and boring, but plenty of detail to discuss, and not overly biased in favor of one side or the other. It does have something epic in it. Turner's "Gettysburg" and "Andersonville" are also of interest.