Unit 731
A tetralogy of early Hong Kong exploitation films based around the Second Sino-Japanese War.
Included Movies
Men Behind the Sun
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.
Men Behind the Sun 2: Laboratory of the Devil
In 1935, Japan's Unit 731 conducts inhumane experiments. A doctor tries to free prisoners, including his fiancée, from the camp while witnessing atrocities.
Men Behind the Sun 3: A Narrow Escape
During the shut down and destruction of the Japanese test camp Squadron 731 in Manchuria, a soldier becomes infected with a virus developed during the camp's testing and risks spreading it into Japan on the train ride home.
Black Sun: The Nanking Massacre
Black Sun: The Nanking Massacre depicts the brutal events behind the Nanking Massacre committed by the Imperial Japanese army against the Chinese people during the Second Sino-Japanese War.