How many movies have Eisaku Yoshida and Taro Iwashiro collaborated on?

They have worked on 3 movies together! Their first movie together was Battle Under Orion (2009) while their highest rated movie together was Isoroku Yamamoto, the Commander-in-Chief of the Combined Fleet (2011). They have not worked together since Detective Mitarai's Casebook: The Clockwork Current (2016). They are most known for their war films together.