This maps out the different departments and sections as used by the Auxiliary Units at GHQ.
- Highworth Post Office - the Auxiliary Gateway
- The Guard House
- The Stable Yard Buildings including Transport Office and Royal Engineer's Office
- The Clock House
- Coleshill House
- Water Tunnels
- The Motor Transport (MT) Park
- North (Top) Lodge
- Possible Ammunition Store
- Ammunition Store
- Special Duties Huts
- Observation Post (OP)
- Original Operational Base (OB)
- Small Arms Firing Range in Badbury Wood
- Grenade Range and Training Quarry