Dr CATHERINE HANLEY holds a PhD in Medieval Studies (Sheffield, 2001), is a Fellow of the Royal Historical Society and is the author of historical works in several genres. Her scholarly writing includes a monograph based on her PhD thesis and academic journal articles in the UK, US and France, as well as contributions to the Oxford Encyclopaedia of Medieval Warfare and Military Technology. She has written seven books of popular history: three for Yale University Press, two for The History Press and one each for Osprey and Pen & Sword.