Obeying an order that I know to be an illegal order is no defence. There is something unsavoury about attempts to sanitize belligerent forces. Easier said than done in a police state such as Nazi Germany or Soviet Russia. That is what people do not understand and it is wrong to stereotype a whole nation or race. We have the luxury of being able to disobey an order considered to be unethical. Soldiers of a police state have some serious thinking to do prior to disobeying.