The following is a link to an interesting article about the movie "Conspirator" which hits theatres today. While the article discusses this specific film, it also touches on the difficulty of being accurate in Civil War films in general. At the end of the article, it mentions a number of Civil War films that have been influential over the years and gives a brief analysis of each.
http://www.newsday.com/entertainment/movies/civil-war-film-conspirator-aims-at-truth-1.2806387
