I always love this excuse.
Even if they weren't a part of herding the Jews into the chambers, they were a part of the logistical support of the overall camp that kept it functioning.
That makes them accessories. And in American criminal law, even if you are an accessory to a crime, if someone dies then even the accessories are charged with murder for their part in helping make the situation arise that led to death.
-PJ
Once someone volunteered for SS at all, it was the luck of the draw (from a human point of view) whether he would get involved with a death camp.
My question is how far do you want to go with this kind of accusation? Just because somebody’s human law says something makes it neither right nor moral.