1. "All Quiet on the western Front", 1930 version.
2. "Dunkirk", John Mills
I was kinda surprised to see how many listed "Waterloo", which I thought had many spectacular scenes but which IMHO was very disjointed and Hollywood. I think it was maybe just too big a project for the people who made it. Things just seem to happen without any regard to the context of the battle, and really it was nowhere near as accurate in displaying the formations and tactics as "Gettysburg" was.
I guess I'm out on my own on this but I would really like to see someone remake it with the kind of commitment and accuracy that went into "Private Ryan" or Gettysburg.