Brad Pitt's french is not convincing.
So Pitt's character is supposed to be posing as a Frenchmen from Paris during the Moroccan mission. The problem is, he can barely mumble French with a thick American accent. In real life, the Germans would have spotted him immediately. Cotillard's character mentions at some point, his French may good for a Québecois but he needs to practice the Parisian accent. Wrong! I am Québecois and there's no way he could pass for either French from any parts of France or French Canadian. I couldn't understand any of his French dialogues, I had to rely on subtitles.
His French is about as good as Aldo Raine's Italian! "Ghoor-lah-mee!" LOL