How many movies have Friedrich G. Beckhaus and Horst Niendorf acted in together?

They have worked on 3 movies together! Their first movie together was Das Bild des Menschen. Gespräche einer letzten Nacht (1964) while their highest rated movie together was Claus Graf Stauffenberg (1970). They have not worked together since Claus Graf Stauffenberg (1970). They are most known for their drama films together.