How many movies have Ben Burtt and Julian Firth collaborated on?

They have worked on 3 movies together! Their first movie together was The Adventures of Young Indiana Jones: Daredevils of the Desert (1999) while their highest rated movie together was The Adventures of Young Indiana Jones: Phantom Train of Doom (1999). They have not worked together since The Adventures of Young Indiana Jones: Phantom Train of Doom (1999). They are most known for their war films together.