How many movies have Eugen Klagemann and Horst Drinda collaborated on?

They have worked on 4 movies together! Their first movie together was Semmelweis – Retter der Mütter (1950) while their highest rated movie together was They All Knew Each Other (1958). They have not worked together since Die Liebe und der Co-Pilot (1961). They are most known for their drama films together.