Unit 731: Japan’s Secret Horror Lab

There is a place in history so dark it was kept a secret for decades. In a remote part

of China during World War II, the Imperial Japanese Army built a facility called Unit 731.

To the locals, it was a lumber mill, but inside they weren't processing

wood, they were processing people. The scientists there didn't refer to

the prisoners as humans, they called them maruta, the Japanese word

for logs. They were treated as disposable materials for experiments that sound like

nightmares. To study the effects of disease, prisoners were injected with the bubonic

plague and anthrax. To see how much the human body could endure, victims were placed