I don't quite see it that way. You might say an anti-war film. I have no doubt that Confederate soldiers killed Confederate prisoners on occasion and that Union soldiers killed Union prisoners. Would not runaway slaves be shot if they couldn't be taken easily? Certainly it would be seen as threatening the War effort. Many of the scenes were based on facts but the units and even the sides were changed. Some thing that the Regular Army did, the Homeguard took the fall for and vice-versa. Some things that the Yanks did the Rebs took the fall for. In fact the scene where they have a YANK laying a baby on the ground to get a woman to talk is based on an incident involving the 64th NC Infantry under Col. Lawrence Allen interrogating the Shelton family. Plus you did see the South as a tad more multi-culturaly with the Cherokee Indian at the battle of The Crater. Ala William Holland Thomas.