Bouko de Groot is Dutch and currently lives in Germany. He has served in the army and is a published author of a number of academic, popular scientific and business journalistic articles. When not writing about current affairs, he continues to study and write about military history.Peter Bull has worked as a freelance illustrator for over 25 years. He has created both traditional and digital art for publishers worldwide, and also runs the Peter Bull Art Studio, based in Kent, UK, which he founded in 1975.