Enemies were prevented from entering the walls and the enemies were attacked from towers by taking advantage of their height, which increased the power of arrows, while simple stones and logs could be used as weapons when gravity was used.
壁により敵の侵入を防ぎながら、塔から高さを生かした攻撃を行うもので、重力を利用すれば、弓矢の威力は増し、単なる石や丸太も武器と化すことができた。