Shock Troops (1967)

Name: Shock Troops
Genre: War, Drama, Thriller
Released: 1967-04-05
Duration: 111 min
Cast: Bruno Cremer, Jean-Claude Brialy, Michel Piccoli, Gérard Blain, Claude Brasseur

It starts with a surprise … and ends with a shock!

A French resistance group free twelve soldiers from a German prison camp, but apparently there's an additional detainee among them suspected of being an enemy spy.