Chris McNab is a wilderness expert, military specialist and author of over 20 survival publications, including How to Survive Anything, Anywhere, Living off the Land, and SAS Training Manual: Endurance Techniques. He holds a PhD from the University of Wales and lives in south Wales, UK.
Martin J. Dougherty is the author of Ireland: The Emerald Isle, Greek Myths and Celts, among many other titles. A former defence consultant, he has written numerous books on history and military history, including Vikings: A History of the Norse People, The Wars of the Roses, King Arthur and the Knights of the Round Table, and Kings & Queens of the Medieval World.