The nucleus of the Line was an eight-foot electric fence charged with five thousand volts; on either side of this was a fifty-yard belt liberally sprinkled with anti-personnel mines and backed up with continuous barbed-wire entanglements of the style of the First World War.

DEFINE: Describes the physical configuration of East German border defenses — electric fence, minefields, and barbed wire entanglements forming the 'Line'.

Horne, Alistair, A Savage War of Peace- Alge…, loc. 814