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Class Listing (DEFENCE)

AIR DEFENCE SITE
- ACTIVE AIR DEFENCE SITE
  - BOMBING DECOY SITE
    - DECOY SITE SHELTER
  - PARACHUTE AND CABLE LAUNCHER
- PASSIVE AIR DEFENCE SITE
AIRFIELD DEFENCE SITE
- BISON MOBILE PILLBOX
- PICKETT HAMILTON FORT
- PILLBOX (AIR MINISTRY PATTERN)
- SEAGULL TRENCH
ANTI AIRCRAFT DEFENCE SITE
- AIRCRAFT OBSTRUCTION
  - ANTI SEAPLANE OBSTACLE
- ANTI AIRCRAFT BATTERY
- ANTI AIRCRAFT OPERATIONS ROOM
- BARRAGE BALLOON SITE
- GUNPOST
- SEARCHLIGHT BATTERY
  - COAST ARTILLERY SEARCHLIGHT
  - SEARCHLIGHT EMPLACEMENT
ANTI INVASION DEFENCE SITE
- ANTI SEAPLANE OBSTACLE
- ANTI SUBMARINE DEFENCE
- ANTI TANK OBSTACLE
- AUXILIARY UNIT OPERATIONAL BASE
- CENTRE OF RESISTANCE
- DEFENDED LOCALITY
- MINED BRIDGE
- NODAL POINT
- PETROLEUM WARFARE SITE
  - BARREL FLAME TRAP
- RAILBLOCK
- RIVER DEFENCE SITE
- VULNERABLE DEFILE
ARMOURED VEHICLE
AUXILIARY HIDE
BATTERY
- ANTI AIRCRAFT BATTERY
- BEACH DEFENCE BATTERY
- COASTAL BATTERY
- SEARCHLIGHT BATTERY
  - COAST ARTILLERY SEARCHLIGHT
  - SEARCHLIGHT EMPLACEMENT
BATTLEFIELD
- NAVAL BATTLEFIELD
BOMBING RANGE MARKER
- DIRECTION ARROW
CASTLE
- ADULTERINE CASTLE
- ARTILLERY CASTLE
- CONCENTRIC CASTLE
- KEEP
  - SHELL KEEP
  - TOWER KEEP
- KEEP AND BAILEY CASTLE
- MOTTE
- MOTTE AND BAILEY
- QUADRANGULAR CASTLE
- RINGWORK
- RINGWORK AND BAILEY
- SIEGE CASTLE
CIVIL DEFENCE SITE
- AIR RAID PRECAUTIONS SITE
  - AIR RAID PRECAUTIONS HEADQUARTERS
- AIR RAID SHELTER
  - ANDERSON SHELTER
  - BLAST SHELTER
- AIR RAID WARDENS POST
- BUFFER DEPOT
- CIVIL DEFENCE BUILDING
- CIVIL DEFENCE TRAINING GROUND
- HOME GUARD SHELTER
- NUCLEAR BUNKER
COASTAL DEFENCE SITE
- BEACH DEFENCE
  - ANTI BOAT LANDING OBSTACLE
- BEACH DEFENCE BATTERY
- BEACH DEFENCE LIGHT
- BOOM
- BOOM TOWER
- CIRCULAR REDOUBT
- COASTAL BATTERY
- EXTENDED DEFENCE OFFICER POST
- MARTELLO TOWER
- POSITION FINDING STATION
- SAXON SHORE FORT
- SEA FORT
- SUBMARINE BASE
- SUBMARINE MINE DEPOT
- TORPEDO STATION
  - BRENNAN TORPEDO STATION
COMMAND POST
DEFENCE OBSTRUCTION
- AIRCRAFT OBSTRUCTION
  - ANTI SEAPLANE OBSTACLE
- ANTI TANK DITCH
- ANTI TANK OBSTACLE
- BARBED WIRE OBSTRUCTION
- BARRAGE BALLOON SITE
- BEACH DEFENCE
  - ANTI BOAT LANDING OBSTACLE
- BOMBING DECOY
  - STARFISH SITE
- CHEVAUX DE FRISE
- FLAME DEVICE
- MINEFIELD
- ROAD BLOCK
- TANK TRAP
DEFENCE WORK
- FIRING PLATFORM
- HOARDING (FORTIFICATION)
- WALL WALK
DRAWBRIDGE PIT
EMBARKATION POINT
- EMBARKATION BEACH
- EMBARKATION HARD
EMERGENCY FOOD CENTRE
ENCLOSED SETTLEMENT
- BURH
- CLOTHES LINE ENCLOSURE
- ENCLOSED HUT CIRCLE SETTLEMENT
- ENCLOSED OPPIDUM
- HILLFORT
- HILLTOP ENCLOSURE
  - PALISADED HILLTOP ENCLOSURE
- OPPIDUM
  - ENCLOSED OPPIDUM
- PALISADED ENCLOSURE
  - PALISADED HILLTOP ENCLOSURE
- PALISADED HOMESTEAD
- PALISADED SETTLEMENT
- PROMONTORY FORT
  - CLIFF CASTLE
- ROUND
FIELDWORK
- AIRCRAFT OBSTRUCTION
  - ANTI SEAPLANE OBSTACLE
- BREASTWORK
- DYKE (DEFENCE)
  - CROSS DYKE
- SIEGEWORK
  - CIRCUMVALLATION
  - SAP
- TRENCH
FLOATING HARBOUR
- PHOENIX CAISSON
FORT
- ARTILLERY FORT
- AUXILIARY FORT
- BASTION TRACE FORT
- FORT ANNEXE
- FORTLET
  - MILECASTLE
  - MILEFORTLET
- SAXON SHORE FORT
- STAR FORT
- VEXILLATION FORT
FORTIFICATION
- ANGLE TOWER
- ARTILLERY TOWER
- BAILEY
- BARBICAN
- BARMKIN
- BASTION
  - BASTION OUTWORK
    - RAVELIN
    - REDOUBT
- BERM
- BLAST WALL
- BLOCKHOUSE
  - BUNKER
  - PILLBOX
- BOOM TOWER
- BULWARK
- CAPONIER
- CASEMATE
- CHEMISE
- CURTAIN WALL
- FLANKER
- FLANKING TOWER
- GATE TOWER
- GLACIS
- GUN EMPLACEMENT
  - ANTI AIRCRAFT GUN EMPLACEMENT
  - ANTI TANK GUN EMPLACEMENT
    - PILLBOX (TYPE FW3/28)
    - PILLBOX (TYPE FW3/28A)
  - HOLDFAST
  - SPIGOT MORTAR EMPLACEMENT
- HORNWORK
- INTERVAL TOWER
- LOOPHOLED WALL
- MACHINE GUN POST
- POSTERN
- RAMPART
  - MULTIVALLATE RAMPART
  - VALLUM
- SCARP
- SCONCE
- TURRET
FORTIFIED BRIDGE
FORTIFIED BUILDING
FORTIFIED CHURCH
FORTIFIED HOUSE
- BASTLE
- FORTIFIED MANOR HOUSE
- PELE TOWER
- TOWER HOUSE
FORTRESS
- LEGIONARY FORTRESS
FRONTIER DEFENCE
- DYKE (DEFENCE)
  - CROSS DYKE
- MILECASTLE
- MILEFORTLET
- TURRET
HELICOPTER TEST SITE
- HELICOPTER TEST RIG
- ROTOR TEST TOWER
MILITARY BUILDING
- CREW BRIEFING ROOM
- DOMESTIC MILITARY BUILDING
  - ABLUTIONS BLOCK
- MILITARY SUPPORT BUILDING
- NISSEN HUT
- OPERATIONS BLOCK
- Romney Hut
- TERRITORIAL ARMY CENTRE
MILITARY INSTALLATION
- COUNTERMEASURES STATION
- MILITARY AIRFIELD SITE
- MILITARY BASE
- MILITARY DEPOT
- VHF FIXER STATION
MILITARY OBSERVATION SITE
- ANTENNA ARRAY
- EARLY WARNING STATION
- LOOKOUT
- OBSERVATION POST
  - BOMBING RANGE OBSERVATION POST
  - MINEWATCHERS POST
- RADAR STATION
  - CHAIN HOME STATION
- RADIO TELEGRAPHY STATION
- SONAR STATION
- SOUND LOCATOR EMPLACEMENT
- SOUND MIRROR
- WATCH TOWER
MILITARY SIGNALLING SITE
- ADMIRALTY SIGNAL STATION
- AIRFIELD CODE LETTERS
- RADAR BEACON
- RADAR STATION
- SEMAPHORE STATION
- SIGNAL STATION
- SIGNALS GATHERING STATION
MILITARY TRAINING SITE
- ARTILLERY GROUND
- ARTILLERY SCHOOL
- BOMBING RANGE
- BUTTS
  - ARCHERY BUTTS
  - RIFLE BUTTS
- DOME TRAINER
- DRILL HALL
- FIRING RANGE
  - NAVAL GUNNERY RANGE
- GYRUS
- MILITARY COLLEGE
- PARADE GROUND
- PILLBOX (ASSAULT TRAINING)
- TARGET
- TURRET INSTRUCTIONAL BUILDING
MILITARY TRANSPORT SITE
- MILITARY AIRFIELD
  - LANDING CIRCLE
- MILITARY CANAL
- MILITARY ROAD
- MOTOR TRANSPORT PARK
- MOTOR TRANSPORT SHED
MISSILE BASE
- BLOODHOUND MISSILE SITE
- THOR MISSILE SITE
ORDNANCE STORE
RAILWAY CONTROL CENTRE
RETENTURA
ROYAL OBSERVER CORPS SITE
- GROUP HEADQUARTERS
- ORLIT POST
- UNDERGROUND MONITORING POST
SENTRY BOX
TOWN DEFENCES
- TOWN DITCH
- TOWN GATE
- TOWN WALL
TRIBUNAL (MILITARY)
WAR PRODUCTION FACTORY
WAR SHELTER
WATER GATE
WEAPONS TESTING SITE
- GAS CHAMBER
- GAS TESTING TRENCH
- PROOF RANGE
- ROCKET TEST FACILITY
- TORPEDO RANGE CONTROL BUILDING