In November 1942, American troops landed in Tunisia. German paratroopers were immediately launched and occupied Tunis. A French squadron of chasseurs d'Afrique was sent to Medjez-el Bab with the mission of occupying the bridge over the Medjerda. But the captain is mute and the cavalrymen don't know whether the operation is being prepared against the Germans or the Allies. The first hypothesis inflames Maréchal des Logis Bourgeon and his friend Maurice, who have not forgotten the defeat of '40. I...