I ordered "Die Fla-Raketentruppen der Luftverteidigung der DDR: Geschichte und Geschichten" (The SAM-troops of the air defense of the GDR - history and stories)
Given the English and Russian technical terms thrown around in this thread, I already wondered what the equivalent in my native German might be.
And I've finished reading it. The book didn't have much technical information - it was clearly written for people who already had an idea about SAM systems. Aside of the history of the FlaRaketentruppen in East Germany it most of the book is filled by anecdotes from air defense soldiers. To be honest, many of them are tinted by nostalgia but they also made me laugh and gave an interesting view of the minds of soldiers int a warsaw pact state.
Maybe an interesting tidbit I got from it is that the East German soldiers don't have a high opinion of the western "Nike" system. True, the range was impressive and all other technical abilities were at the height of the time. While it still took two to three hours to get a Dvina or Volhov "Raketenkomplex" on the road, the Nike required an incredible amount of space to be deployed and was essentially an immobile system that would have limited its tactical use in an actual war severely.
There's a story in there about a soviet air defense unit claiming to be able to tear down their S-75 in half an hour which greatly impressed the Germans, but they didn't mention how long it takes takes to set up that (presumably) mess afterwards.
Hm, what they did with those? Scrap them?
The single S-300 "Raketenkomplex" (read: Battalion) they had was considered "sensitive equipment" and given back to Russia.
All the other eastbloc SAM systems were sold or scrapped. The East German soldiers who wrote chapters for the book are still quite hurt about that. All their training instantly became worthless, just as they had got the S-300 (SA-10 Grumble) that introduced truly mobile air defense tactics.