Don't know if it has already been posted, i searched but no result, anyway i would like to suggest some movies for getting into the period of ETW.
1) Voyna i Mir (War and Peace) (1967) http://www.imdb.com/title/tt0063794/
2) Waterloo (1970) http://www.imdb.com/title/tt0066549/
1 & 2 masterpiece of Sergei Bondarchuk
3) Barry Lyndon - S.Kubrik (1975) http://www.imdb.com/title/tt0072684/
NOT very easy to find, especially the two russian movies, but i think they're are worth to watch.