I think the people who paid Von Braun take 99.99% of the responsibility for what happened - they decided to kill people and chose one of many possible ways to

I think the people who paid Von Braun take 99.99% of the responsibility for what happened - they decided to kill people and chose one of many possible ways to do it. They could just as easily have poured their money into something else. As for von Braun himself, he got employed and looked after for the rest of his life despite being part of the decision (I think) to use slave labour to build his rockets - and that really was a management decision.