April 5, 1943: a battalion of the Foreign Legion arrives in El Ksour, Tunisia, to escort a fortune in gold bars to the home front. A German ambush awaits, and all but four die. Thanks to the street smarts of Sergeant Augagneur, the Legionnaires successfully counter attack. The bank manager and his seductive wife arrive, and so does a German lieutenant, whom the French arrest. Augagneur wants to steal the gold; warrant officer Mahuzard wants to do his duty. A series of alliances form and break apart, the group dwindles in number, and the gold heads south toward Betahoua. But in whose possession?
Jean-Paul Belmondo
as Sergent Pierre Augagneur
Michel Constantin
as Adjudant Edouard Mahuzard
Jacques Villeret
as Brigadier Béral
Michel Creton
as Légionnaire Boissier
Marie Laforêt
as Hélène Laroche-Fréon
François Perrot
as François Laroche-Fréon
Michel Beaune
as Général français
Gérard Buhr
as L'officier du camp de ravitaillement
Matthias Habich
as Karl Brenner
Maurice Auzel
as Le soldat Borzik
Pierre Semmler
as Capitaine Ulrich Dieterle
Caroline Silhol
as Mme Chanterelle