At the end of the film, Katherina puts down the champagne bottle twice.
Regimental headquarters are shown to be in Vitry (Vitry-en-Artois) France, and the fighting scene takes place in Nevremont, Belgium. The distance between these two is 154 km (96 mi.) by modern highways. Regimental HQ would be much closer than that in combat. The map in the colonel's office is not nearly to scale, either.