David Fletcher has written a number of books and articles on military subjects and, until his retirement, was the historian at the Tank Museum, Bovington, UK. He has spent over 40 years studying the development of British armoured vehicles during the two World Wars, and in 2012 was awarded an MBE for services to the history of armoured warfare.
Henry Morshead is a design consultant in the European automotive and aerospace sectors, with clients including Jaguar, Bentley, Citroën and Airbus. He is also a technical sponsor of the Bloodhound supersonic car, contributing digital surfacing and design services. A former officer in the Royal Engineers and illustrator for Jane's, he maintains a keen interest in the design and use of military land and air vehicles.