Location #1: The first part of the movie takes place at
152e Régiment d’infanterie, Colmar, France
Location #2: The fortress
Château du Haut-Kœnigsbourg, Orschwiller, France
Location #3: House in the mountains
Somewhere west of Ribeauvillé, France
Location #4: Final sequence — The crossing
At Chamonix-Mont-Blanc, France