If these sub-humans are part of a real military then they should be found, tried as being responsible for war crimes and hung, or they are terrorists and do NOT get protections of the Geneva Convention and should be shot on the battlefield.  When we permit those who violate the rules of the Geneva Convention to be protected by it we are in fact encouraging violations of that same treaty and the heartless unspeakable torture of innocent civilians.  You cannot have it both ways.