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ANTI TANK OBSTACLE |
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| SN | Obstacles, usually constructed of concrete and/or metal, designed to prevent the advance of enemy armoured divisions in the event of a successful invasion. |
| CL |
MILITARY DEFENCE AND FORTIFICATION |
| BT | ANTI INVASION DEFENCE SITE |
| NT |
ANTI TANK BLOCK
ANTI TANK DITCH ANTI TANK GIRDER ANTI TANK HAIRPIN ANTI TANK SCAFFOLDING ANTI TANK VERTICAL RAIL ANTI TANK WALL |
| RT |
DEFENDED LOCALITY
RAILBLOCK ROADBLOCK STOP LINE
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