Siegecraft (Civ3)/Fall of Rome/Civilopedia

The perpetual improvement in fortifications during the waning years of the Roman Empire and the early Middle
Ages forced the designers of siege weapons to rethink the weapons of their trade. Needed were newer, more
powerful weapons of war capable of tumbling the ever-thicker walls. Needed was a weapon capable of launching
heavier projectiles longer distances. The answer was the Trebuchet.