How many movies have Hans-Jürgen Kruse and Rolf Hoppe collaborated on?

They have worked on 6 movies together! Their first movie together was Hauptmann Florian von der Mühle (1968) while their highest rated movie together was Für die Liebe noch zu mager (1974). They have not worked together since Levin's Mill (1980). They are most known for their drama films together.