I would have to go with a Bridge Too Far, based off an awesome book by the way.
Reasons:
1. Showcased the heroism of all the allies present at the battle, including the Americans, Polish and the British along with the Dutch civilians.
2. Showed the Germans as humans and even gave their perspective.
3. For a movie, very historically accurate.
4. Awesome battle scenes.
And the greatest war movie scene of all time:









