AUXILIARY UNIT OPERATIONAL BASE

UF Auxiliary Unit Hideout
Resistance Hideout
SN A well concealed structure, usually constructed undergound, intended for use by members of the British Resistance Organization in the event of invasion.
CL MILITARY DEFENCE AND FORTIFICATION
BT AUXILIARY UNIT SITE
NT AUXILIARY UNIT BOMB STORE
AUXILIARY UNIT CONTROL STATION
AUXILIARY UNIT OBSERVATION POST