The Adventures of Tartu

Captain Terence Stevenson (Robert Donat) is parachuted into Romania to assume the identity of Captain Jan Tartu, a member of the fascist Iron Guard. He makes his way to Czechoslovakia to steal the formula of a new Nazi poison gas and sabotage the chemical plant where it is being manufactured. However, his contact is arrested before he can arrange for a job in the factory. Tartu is instead assigned work as a foreman at a munitions factory, where he is issued a German uniform.