A Companion to Medieval Arms and Armour covers the entire period from the fifth to the fifteenth century, a thousand years which saw huge changes in military technology in most of the world's major civilisations. Arms and armour in Europe are the principal focus of the studies, but those of neighbouring civilisations, including the Byzantine Empire, eastern Europe, the steppes and the Islamic world, are also investigated, both for the impact upon them of European technological developments, and for their influence upon developments within western Europe.