How many movies have Nikos Foskolos and Yiorgos Petrohilos collaborated on?

They have worked on 3 movies together! Their first movie together was Θύρα 7: η μεγάλη στιγμή (1983) while their highest rated movie together was Unknown War 2: The Man with Two Faces (1987). They have not worked together since Sentenced to Death (1987). They are most known for their war films together.