The damn in German hands(premise flaw)
Don't get me wrong, I have enjoyed this movie since I was approx 7 years old, but the whole premise of the movie was based on the strategic position of the one army on one side of the bridge and the Germans on the other side of the bridge, and once the Germans could mass in force then they would flood over the bridge and destroy the defending army, yet 2 miles upriver the Germans hold the damn that spans the same river, DOH! even if they can't get tanks and heavy armor across the damn, they can still move men and supplies, right?
I still enjoyed the movie, but as a child and young adult I never noticed this, but yesterday as I watched, this fact was all but screaming at me.