Antitank obstacles became prominent during WWII and were often combined with natural defences such as rivers and embankments to slow down the advance of tanks. This would allow the defenders time to, bring up re-enforcements, strengthen the defences and call for fire support on the attacking tanks.
Cubes were typically constructed in rows 1 obstacle deep, although there are examples of cubes deployed in rows 2 deep. Whilst Pimples and Dragons Teeth, were often constructed in rows of 3 to 6 obstacles deep.
Pillboxes would often be located overlooking the obstacles, to fire on enemy engineers attempting to demolish the them. In addition, within the Dragons Teeth defences, the Germans built steel reinforced concrete and steel I beam ‘Gates’, which due to there size were difficult to breakthrough without heavy loss of life.
The models include both British and German designs. Such as British ‘Cubes’ and ‘Pimples’ and the spectacular German ‘Dragons Teeth’, as used in the Seigfried Line.