On the valley floor, three quickly built towers began to roll slowly and inexorably toward the gates of Uwelt City. Constructing them was one of the first steps in breaking a walled town, and Isabell had refined their design again and again over the course of the civil war.
Convention held that siege towers should be heavy, ponderous weapons that were sturdy enough to allow men to climb safely within the tower before emerging from a ramp at the top, allowing them to storm the walls and clear them of defending soldiers. The towers had to be sturdy enough not to collapse under their own weight while they rolled ponderously forward, and the sides of the towers had to be thick enough to offer protection from the siege weapons of the opposing side.
