How many movies have Hanzaburo Kaneko and Yōichi Numata collaborated on?

They have worked on 5 movies together! Their first movie together was Admiral Yamamoto and the Allied Fleets (1956) while their highest rated movie together was The Blood Sword of the 99th Virgin (1959). They have not worked together since 皇室と戦争とわが民族 (1960). They are most known for their war films together.