Christine Shaw is Associate Member of the Faculty of History at the University of Oxford. She has published extensively on the political and military society of Renaissance Italy and her previous books include Julius II: The Warrior Pope (1993), Italy and the European Powers: The Impact of War (as editor, 2006) and Barons and Castellans: The Military Nobility of Renaissance Italy (2015).

The late Michael Mallett was Emeritus Professor of History at the University of Warwick and a distinguished historian of fifteenth- and sixteenth century Italy. His books included Mercenaries and their Masters: Warfare in Renaissance Italy (1974), and (with J.R.Hale) The Military Organization of a Renaissance State: Venice c.1400 to 1617 (1984).