Dragon's teeth (fortification)
Pyramidal anti-tank obstacles / From Wikipedia, the free encyclopedia
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For other uses, see Dragon's teeth (disambiguation).
Dragon's teeth are pyramidal anti-tank obstacles of reinforced concrete first used during the Second World War to impede the movement of tanks and mechanised infantry. The idea was to slow down and channel tanks into killing zones where they could easily be disposed of by anti-tank weapons.
They were employed extensively, particularly on the Siegfried Line.[1][2][3]