John D Grainger is a former teacher and historian of great experience with a particular interest in Classical and Hellenistic Greek history. His many previous works include the following for Pen & Sword: Hellenistic and Roman Naval Wars (2011); The Wars of the Maccabees (2012); Roman Conquests: Egypt and Judaea (2013); a three-part history of the Seleukid Empire (2014-16), King's and Kingship in the Hellenistic World 350-30 BC (2017), Antipater's Dynasty (2018), Ancient Dynasties (2019), The Roman Imperial Succession (March 2020) and The Galatians (August 2020). He lives in Evesham, Worcestershire.