According to Lida Mayo’s book ‘The Ordnance Department: On Beachhead and Battlefront,’ they were constructed under a large circus tent. “Towed by tanks ... one World War II-era newsreel ...
During World War II, these strategic tracked vehicle obstacles, aptly named "Drachenzähne" or "Dragon's teeth," formed anti-tank barriers stretching 390 miles along the German borders with ...