Most of the airfields use the same scenery objects as seen at Berne and Calais.
Berne - This is representative of most airbases in the sim.
Calais - This is representative of most airbases in the sim.
Central Berlin - no airbases but much more detail here as you would expect.
Central London gets the Royal treatment !
There is no actual airbase but London gets the most detailed treatment in
Microsoft Combat Flight Simulator (1998), with numerous landmarks dotting the Thames River.