Staurt MitchellJohn Sadler is a military historian born and living in Northumberland. He has written extensively on a range of periods and is a battlefield tour guide. He also lectures on military history at Newcastle University's Centre for Lifelong Learning and i a Fellow of the Royal Historical Society and the Society of Antiquaries of Scotland. With Rosie Serdiville he is co-author of Caesar's Greatest Victory: The Battle of Alesia 52 BC (Casemate 2016). Read More Read Less