Airfield Archaeology is sub-divided on a County-by-County basis, based upon the current County boundaries.
Each County is further divided into four categories: Airfields, Memorials, Museums & Collections and Other Sites. The latter focuses on other military sites which usually, though not exclusively, have an aviation connection. These include Anti-Aircraft batteries, Operations Rooms, Defensive Structures, Radar Sites, Bombing Ranges, Minutions Factories and Stirage, Fuel Depots and so on.
Only Counties which have some content are listed and this will be updated on a regular basis.