A medieval view of counterinsurgency

A few months ago, Kat over at Castle Argghh! wrote this great post about the Normans' counterinsurgency war in the British Isles, in the years following 1066. While modern revolutionaries like Mao and Lenin might have crafted particular revolutionary strategies, counterrevolutionary challenges go way, way back. For example, the medieval version of an enclave strategy drove the construction of castles across post-Conquest England and Wales in the 11th and 12th centuries.