Man Behind the Sun (1988)

Japanese troops round up Chinese and Russian prisoners of war and take them to unit 731, where they're horribly tortured and experimented on to test new biological weapons.

Director: Tun-Fei Mou

Cast: Gang Wang, Dai Yao Wu, Runshen Wang, Zhe Quan, Zhaohua Mei, Tie Long Jin, Jiefu Tian, Bolin Li, Michael Dreselly Thomas, Jianxin Chen, Hsu Gou, Linjie Hao, Haizhe Jin, Yuanrong Jin, Pengyu Liu, Xuhui Liu, Shennin Wang, Jiang Wen