My apologies for such a long and multi-part question, really I'm trying to get a picture of the overall changes in Cold War strategy that came about as a consequence of the Wall coming down and the subsequent reunification. I see three big parts to this: the weaponry East Germany held, their territory, and the officers who may have defected as a result of reunification.

My understanding is that after the Wall fell, East Germany was in posession of a large number of weapons and technology made available to the Warsaw Pact states. Did West Germany and by extension NATO capture this technology was there anything new that they hadn't otherwise had access to? Or was the technology repatriated back to the USSR?

Furthermore, how was the overall strategy of defending Europe affected by the reunification? I'm aware of the Fulda Gap being a hotspot that it was thought that the USSR would take advantage of in terms of tank deployment, so obviously that changed. What other strategic gains did NATO see from this new territory?

Finally, how many officers and other military personnel defected to the West and is their any record as to how their intelligence affected NATO strategy? Were there any officers who went to other Warsaw Pact states?

If there are too many questions here I'd be happy to break them up into multiple threads.