Sorry if this wasn't clear, but i was being facetious, obviously there was no material reason why West Germany or NATO needed a bunch of allegedly former Nazis staffing the bureaucracy, i think the more immediately causal factor was just political apathy among the western powers for keeping all of the middle managers in prison compared to the east, and when they got out they went back to what they were doing before, managing in the middle and climbing the social ladder, the exception being a few Nazis with very specific skills or knowledge like Von Braun and Heusinger.