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. He currently works as the curator at Woburn Abbey, Bedfordshire.
Adam Hook studied graphic design, and began his work as an illustrator in 1983. He specializes in detailed historical reconstructions, and has illustrated Osprey titles on the Aztecs, the Greeks, several 19th century American subjects, and a number of books in the Fortress series. His work features in exhibitions and publications throughout the world.