Chris McNab is an author and editor specializing in military history and military technology. To date he has published more than 40 books, including A History of the World in 100 Weapons (2011), Deadly Force (2009) and Tools of Violence (2008). He is the contributing editor of Hitler's Armies: A History of the German War Machine 1939–45 (2011) and Armies of the Napoleonic Wars (2009). Chris has also written extensively for major encyclopedia series, magazines and newspapers, and he lives in South Wales, UK.

Andrew Roberts is the author of Masters and Commanders: How Four Titans Won the War in the West (which won the International Churchill Society Book Award) and A History of the English-Speaking Peoples since 1900 (which won the Intercollegiate Studies Institute Book Award). His latest book, The Storm of War: A New History of the Second World War, won the British Army Military Book of the Year for 2010. He holds a PhD in History from Cambridge University.
Chris McNab is an author and editor. To date he has published over 100 books, many for Osprey.