Chris Gravett is a former Senior Curator at the Royal Armouries, Tower of London, and a recognised authority on the arms, armour and warfare of the medieval world. He has worked as an advisor for numerous TV and film productions, and has written many books for Osprey, including Warrior 1: Norman Night 950-1204 AD. He currently works as a curator at Woburn Abbey, Bedfordshire.Adam Hook studied graphic design, and began his work as an illustrator in 1983. He specialises in detailed historical reconstructions, and has illustrated Osprey titles on the Aztecs, the Greeks, the American Civil War and the American Revolution. His work features in exhibitions and publications throughout the world.

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• Chronology, design and development; tour of the sites; the principles of defence; the living sites; operational history; aftermath; the sites today.