History written by the victor is a special case of time-space revision. In the examples given, each side will project the facts in the context of their own place in space and time. That allows limited facts to add up for their POV. To get history correct, you may need to shuttle between the different spaces (north and south during the civil war time) to find the truth that is somewhere in the middle. Just using the sourthern or northern POV will result in some revisionists history. Maybe science needs to rewrite history in the context of the facts, within time and averaged over space, since historians often drop the ball, since hisotry is a liberal art and not a science. Art is about inducing emotions and reactions and has the liberty of stepping outside of reality if that makes the art a masterpiece. Being liberal this means a liberal portion of bull is allowable in that art work.