Japan

WW2

Unit 731

BioWeapons

US pardoned them and got the details of the experiments and results of the torture techniques

There was a video long ago that showed some of these experiments on what some would say the dark web

Frostbite experiments

Prisoners exposed to freezing weather to have water poured on their bare arms

Guard comes up and just pulls all the flesh off which exposes the raw bone in the process

Truly evil shit