This mockup of the Atlantic Wall
NN8303 : Atlantic Wall, originally topped with barbed wire, protected by rising ground and a final ditch, provided realistic training for the D Day Landings in June 1944.
The whole length of this wall has been pounded by explosive missiles and evidence for the realistic-training attacks is plainly visible even today.
Some clues can be found on the Web.
"Field exercises in Scotland commenced in August and September 1943, and succeeded in establishing unique techniques and equipment for use by armoured and artillery regiments in storming the beach;.."
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