There would have been no need to rely on Enigma intercepts to know what was happening.
I have read of reports that some knowledge of what was happening across occupied Europe reached Britain, but it simply wasn't believed. We are of course looking at this with hindsight after the camps had been liberated.
If you say that admin clerks etc shouldn't be prosecuted due to the coercive regime, how high up does that exemption go?
It's the old dilemma of how responsible are you for 'obeying orders'. Does that let you off the hook for criminal activities? At the Nürnberg trials this was not allowed as a defence.
I think there were various factors that resulted in large numbers of war criminals never being brought to justice, especially after the main culprits had been tried and executed.
The western allies and Russia needed the cooperation of the population in their respective zones of occupation, and endless war trials were unlikely to facilitate this. It also became harder to gather evidence as the east became increasingly cut off from the west. The communists were suspicious of the 'western imperialists' and started to refuse to cooperate with investigations.
All this was of course in the context of massive destruction and chaos across the whole continent. Whole cities had been bombed flat, and the German economy at the end of the war was functioning at 20% of its pre-war capacity. We think 4% loss of GDP is bad!
One of the factors aiding the German economic miracle was they worked hard to bury a guilty conscience. I have seen German teenagers crying with shame when the anniversary of some particular atrocity comes round. They weren't guilty of anything, their grandparents should have wept with shame, but unfortunately far too many of that generation would not admit their guilt and complicity.
I wonder as well if continuing to highlight German war crimes might have led to questioning the conduct of the allies during the war. The targetting of the civilian population for bombing and unrestricted submarine warfare being two prime examples. If it was wrong for the Germans to do it, ...
I read part of Adenauer's autobiography, and he maintained that if you wanted former Nazis to embrace the new Federal Republic and its democracy, you could not ban them from participation in its politics and institutions for ever. This would just breed resentment and perhaps a longing to get back to the good old days of the Reich. There was to be no repetition of the mistake of WW1 where the new German republic was not accepted by many as it was burdened with the guilt and shame of defeat and the humililation of the peace treaty.
No doubt as more responsibility was handed back to the Germans after the war an old boys' network would have sought to cover up war crimes.
I wonder if Adenauer was right to keep the old national anthem* - the tune anyway, the words are different. It is certainly a better tune than the dirge the poor Brits have to sing! It was actually the Weimar anthem and again Adenauer didn't want a complete break with the past.
*I love Michael Flanders' renditioning of the words as
German German overalls!
That's enough post-Christmas pontificating from me! Time for another glass of Alsatian wine.