This film is simply one of the best I've ever seen about WW2. It shows, with few characters, few accurate words and in the overwhelming emptiness of the desert, the true face of war: total nonsense!
The plot, which puts 4 French soldiers in the situation of taking a German prisoner, together with his car, on a trip through the desert back to El-Alamein, is brilliantly written by Michel Audiard. The author shows us how enemies, being held away from fighting, can learn to progressively appreciate themselves... or not. Irony and emotion just stick together along the whole film to the end. True, human and disabused.
I don't have anything more to say. Or just one thing: it's the fourth time I watch that film, it's the fourth time I'm caught by it until the last second!