Based on the chassis of the Panzer III tank, the Second World War German Sturmgeschutz series of assault guns was a successful and cost-effective range of armoured fighting vehicles. Originally intended as a mobile assault weapon for infantry support, the StuG was constantly modified and saw extensive use on all battlefronts as an assault gun and tank destroyer. Author Mark Healy examines the development, construction and fighting qualities of the StuG, including insights into what it was like to operate and maintain. His centrepiece is a surviving StuG III at the Tank Museum, Bovington, and he also draws on a range of documentary and photographic information sources in Germany, the USA and France.