John Greenacre served across the world in the British Army as a helicopter pilot and staff officer for 23 years before leaving to pursue a career as a historian. He was awarded his PhD from the University of Leeds and his thesis was published by Pen & Swo Mike Peters is a retired Army Air Corps officer with more than thirty years of military service. He is now a full-time military historian and Chairman of the International Guild of Battlefield Guides. Mike has published books on the Glider Pilot Regiment in WWII and the Operational History of the Army Air Corps.