* Michel Galabru as Captain Fernand
* Gérard Rinaldi as Private Dupontel
* Michel Creton as Private Pignol
* Jean Carmet as Lieutenant Dubois
* Bernard Menez as Lieutenant Verdier
* Marie-Christine Barrault as Miss Thompson
* Maria Pacôme as Madame Dubois
* Pierre Mondy as the school director
* Daniel Prévost as a lawyer
* Henri Guybet as a teacher
This is not an exhaustive list, but it covers the key roles in the film. You can find a more complete cast list on websites like IMDb.