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STOP LINE |
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| SN | A notional line of resistance defined by anti tank obstacles, pillboxes and gun emplacements. |
| CL |
MILITARY DEFENCE AND FORTIFICATION |
| BT | ANTI INVASION DEFENCE SITE |
| RT |
ANTI TANK GUN EMPLACEMENT
ANTI TANK OBSTACLE BARBED WIRE ENTANGLEMENT DEFENDED BUILDING DEFENDED LOCALITY DEMOLITION CHARGE SITE FIELDWORK LYON LIGHT EMPLACEMENT PETROLEUM WARFARE SITE PILLBOX RAILBLOCK ROADBLOCK SPIGOT MORTAR EMPLACEMENT
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