an offensive weapon against small unarmoured surface targets. The Boeing B-52 jet bomber and many of its contemporaries (particularly Russian) featured a barbette (a British English term equivalent to the American usage of the term 'tail gun'), or a "remote turret"—an unmanned turret but often one with a more limited field of fire than a manned equivalent. Layout Aircraft carry their turrets in various locations: "dorsal" – on top of the fuselage, sometimes referred to as a mid-upper turret. "ventral" – underneath the fuselage, often on US heavy bombers, a Sperry-designed ball turret. "rear" or "tail" – at the very end of the fuselage. "nose" – at the front of the fuselage. "cheek" – on the flanks of the nose, as single-gun flexible defensive mounts for B-17 and B-24 heavy bombers "chin" – below the nose of the aircraft as on later versions of the Boeing B-17 Flying Fortress. "wing" – a handful of very large aircraft, such as the Messerschmitt Me 323 and the Blohm & Voss BV 222, had manned turrets in the wings "waist" or "beam" – mounted on the sides of the rear fuselage e.g. US twin- and four-engined bombers. Gallery Combat vehicles History Amongst the first armoured vehicles to be equipped with a gun turret were the Lanchester and Rolls-Royce Armoured Cars, both produced from 1914. The Royal Naval Air Service (RNAS) raised the first British armoured car squadron during the First World War. In September 1914 all available Rolls-Royce Silver Ghost chassis were requisitioned to form the basis for the new armoured car. The following month a special committee of the Admiralty Air Department, among whom was Flight Commander T.G. Hetherington, designed the superstructure which consisted of armoured bodywork and a single fully rotating turret holding a regular water cooled Vickers machine gun. However, the first tracked combat vehicles were not equipped with turrets due to the problems with getting sufficient trench crossing while keeping the centre of gravity low, and it was not until late in World War I that the French Renault FT light tank introduced the single fully rotating turret carrying the vehicle's main armament that continues to be the standard of almost every modern main battle tank and many post-World War II self-propelled guns. The first turret designed for the FT was a circular, cast steel version almost identical to that of the prototype. It was designed to carry a