Gen Mike Reynolds late Queen's is the recognised expert and does a very good bottle field tour. Wrote a good book called The Devils Adjutant on the subject. I've got a pamphlet from a local museum you can have if you want. (And I can find it) Send me a PM. I was so pissed /hungover when I bought it, I actually got the german version by mistake, but the piccies and plans are the same!
Pieper died in 1976. He'd moved to France and local leftists (not surprisingly, really) caught up with him. They set fire to his house, which was ironic I suppose, given his record in Russia and France.
Like many old Nazis, he managed to evade justice after the war. Until vigilantes did the job.
If you ask for help, and get it, 'twould be polite to respond or at least acknowledge your replies. Did you not have to write Thank you letters when you were younger? Pah! What's the world coming to.....?