I've often said that I've learned quite a few things from RPGs over the years. From the various types of polearms in existence to a myriad of words I've added to my vocabulary, RPGs have broadened my horizons. A few months back, I purchased Twilight 2000 with the intention of running a campaign, and the book details a lot of Soviet and NATO military equipment including tanks, infantry fighting vehicles, RPGs, anti-tank guided missiles, etc., etc. I was watching some news about the war and they described a vehicle as a tank and I immediately thought, "I think that's a BMP, not a tank." (A BMP is an infantry fighting vehicle originally produced during the Soviet era.) I can't normally tell the difference between specific types of military vehicles so it was odd being able to.