Just finished watching a very good film about the Battle of Waterloo made in 1970 which I'd never seen before finding myself picking out quite a good Jeremy and Cuby at the ball, so wasn't too hard to imagine Ross somewhere in there during the battle scenes searching for Jeremy. Also some great actors of the period as well all bringing for me the vivid passages of the books to real life especially Rod Steiger playing Napoleon very well indeed.
Quite a lot of attention to detail too with a very muddy ground and a sunny day following the original heavy overnight rains, though I'm not too sure how much artistic licence they took especially the battle at the farmhouse as from memory the French never captured it though came close nonethless a great film to link to the passages in the books....