A Cambodian priest comes to aid the French during World War One. He to uses his powers to make an army of zombies to help the French win the war. When a successful demonstration frightens the French as much as the enemy the priest is locked up to save mankind from his power and an international expedition is sent into Cambodia to destroy an ancient formula that turns men into zombies. Made by the same man who made White Zombie (to some, this film is concidered something of a sequel), this film is definatly worth checking out.
P.S. if you REALLY broke, This film has fallen into the public domain and can be freely downloaded from http://archive.org/details/RevoltoftheZombies