How many movies have Nobutada Iwasaki and Satsuo Yamamoto collaborated on?

They have worked on 3 movies together! Their first movie together was Okinawa (1970) while their highest rated movie together was Men and War I: Prelude to Destiny (1970). They have not worked together since Men and War II: Land of Love and Sorrow (1971). They are most known for their drama films together.