Anthony G. Williams is primarily an ammunition specialist, but also has an interest in the guns which fire it. 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. Over 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 http://quarryhs.co.uk.