Anthony G. Williams is an ammunition specialist. He was an editor of Jane's Weapons: Ammunition for thirteen years, contemporaneously with being editor of The Cartridge Researcher, the journal of the European Cartridge Research Association, for over fifteen years, thereby covering both the modern and historic aspects of ammunition. He is the author of Rapid Fire, Assault Rifle [with Maxim Popenker] and the Flying Guns trilogy [with Dr Emmanuel Gustin], which describes the development of aircraft guns, ammunition and installations from 1914 to the present day. For more than a decade he has made numerous presentations on aspects of military ammunition to international conferences such as the annual symposia held at the Ministry of Defence Academy at Shrivenham and the National Defence Industries Association conferences in the USA, and he maintains a military gun and ammunition website at quarryhs.co.uk