The FZG-76 or 'V-1' as it was popularly known, was a German unmanned, mid-wing monoplane that was used as a guided rocket to attackBritain and Belgium during the Second World War. The V-1 carried a warhead of 1870 lb of explosives and had it's guidance preset before launching, making it immune to electronic interference and jamming. The V-1 launched at a speed of about 200 mph and then cruised at an average speed of 350 mph at an altitude of between 3500 and 4000 feet and had a range of about 130 miles. Mass production of the V-1 started in March 1944, with some 35000 being produced, of which 9251 were fired at England and 6551 at Antwerp. Research V-1