Another interesting piece of trivia

[Hans]

http://www.wwiitechpubs.info/bunker/ft-bl/images/image032.jpg

A mobile anti-tank wall......I had never heard of it!

[Hans]

and a link to info on that

Cointet! (http://www.wwiitechpubs.info/bunker/ft-bl/belgian-fortifications-ftr-2-deep-defense.html)

[General Bolt]

Cool photo.
That looks like the border that Steve McQueen jumped inthe movie The Great Escape.