How many movies have Stanislawa Skorupianka and Zbigniew Janicki collaborated on?

They have worked on 4 movies together! Their first movie together was How I Unleashed World War II, Part I: The Escape (1970) while their highest rated movie together was How I Unleashed World War II, Part III: Among Friends (1970). They have not worked together since Pearl in the Crown (1972). They are most known for their war films together.