This is another fine film by the French director, Christian Carion (see 2005's Joyeux Noel).
The English title is so different from the French one ("In May, do what you like" or "In May, do what pleases you")...why? Perhaps it romanticizes the period. The level of violence is minimal by American standards, so the viewer should not expect much "action". I do think it's really about the human spirit with the second World War as the backdrop. The film is beautifully shot and well-executed, though it does not have the emotional impact of Joyeux Noel. The score by Ennio Morricone is the outstanding element for me.