'Roman Siege Warfare' details the mass mobilization of its troops that allowed Rome to conquer all before it. Episode opens with some fascinating demonstrations of siege equipment, including devastatingly deadly bolt-firing catapults and stone-throwing ballistae. The famous sieges of Jerusalem (in 66 AD) and Masada in Judea are covered, then the programme describes the life of a soldier in a typical Roman fort, such as Vindolanda on Hadrian's wall, illustrating the change in the army from an offensive to a defensive force.