Unfortunately not the case. Foreign forces in Germany retain their own registrations. "X" is used to donate Bundeswehr vehicles used within a NATO structure, ie AFCENT in Maastricht, or RAF Geilenkirchen (NATO AWACS fleet)
Added by Roger Greenaway on 04 April 2011.
Didn't the major airports like Hamburg, Frankfurt, Templehoff and Munich utilise these during the 1970's-1980's?
Yes, they were standard airport units in Germany in most major airports and with the German Air Force/Naval Air Arm up until the mid 1980s. The main equipment suppliers were either Saval-Kronenberg or rosenbauer.
Added by Aaldert Koster on 04 April 2011.