ANTI TANK ISLAND

SN A designated area within a town or village with fixed defences such as pillboxes, anti tank ditches and gun emplacements, designed to threaten the flanks of an enemy force which had broken through a stop line.
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
RAILBLOCK
ROADBLOCK