The prosperity of the Roman Empire depended on peace, and that peace was provided by its army – a soldiery that was well trained, well paid, and well equipped, armed with mass-produced weapons and ingenious machines of war. In Britain, having quelled the population of the lowlands within a few decades of Claudius’ invasion, the army found itself permanently stationed against the upland regions of the island, which were harder to conquer and economically less worth the effort.
