Charles Stephenson is an established author on naval and siege warfare and the history of fortifications, with the following books in print: The Fortifications of Malta 1530-1945, Zeppelins: German Airships 1900-40, The Channel Islands 1941-45: Hitler's Impregnable Fortress, The Admirals Secret Weapon: Lord Dundonald and The Origins of Chemical Warfare and Germany's Asia-Pacific Empire: Colonialism and Naval Policy, 1885-1914. He was consultant editor and a contributor to Castles: A History of Fortified Structures: Ancient, Medieval & Modern.