Artillery in the Era of the Crusades provides a detailed examination of the use of mechanical artillery in the Levant through the twelfth and thirteenth centuries. Rather than focus on a selection of sensational anecdotes, Michael S. Fulton explores the full scope of the available literary and archaeological evidence, reinterpreting the development of trebuchet technology and the ways in which it was used during this period. Among the arguments put forward, Fulton challenges the popular perception that the invention of the counterweight trebuchet was responsible for the dramatic transformation in the design of fortifications around the start of the thirteenth century.