As a student and researcher of Civil War era politics, I looked at the film with a critical eye. Am I certain without further research that there are not factual inaccuracies? No. Do I care? No. I don't think the film could have been made any better than it was. It will be on the best-made films list for many, many decades to come. Those who don't know much about the era will be stunned - those who do will be amazed. Almost perfect.