Torture and abhorrent behavior is not exclusive to Nazis. How many other intelligence agencies have used barbaric tactics to extract information to keep their homeland safe? I just don't see the direct connection - doesn't make it any less wrong, I just don't see the evidence that it's directly influenced by this connection.
Germany is where ~99% of all former Nazis lived after the war. So why hasn't Germany been spending their time invading all of their neighbors and genociding peoples? Why aren't they by far the most militaristic nation of the post WW2 era? It's because your premise is false.
On the contrary: MK ULTRA. Agent Orange. Secret torture sites.