The V-1 flying bomb (German: Vergeltungswaffe 1, Fieseler Fi 103 by the RLM's airframe number) — also known as the Buzz Bomb or Doodlebug — was an early pulse-jet-powered predecessor of the cruise missile.
The V-1 was developed at Peenemünde Airfield by the German Luftwaffe during the Second World War. During initial development it was known by the codename "Cherry Stone". The first of the so-called Vergeltungswaffen series designed for terror bombing of London, the V-1 was fired from "ski" launch sites along the French (Pas-de-Calais) and Dutch coasts. The first V-1 was launched at London on 13 June 1944, one week after (and prompted by) the successful Allied landing in Europe. At its peak, more than one hundred V-1s a day were fired at southeast England, 9,521 in total, decreasing in number as sites were overrun until October 1944, when the last V-1 site in range of Britain was overrun by Allied forces. This caused the remaining V-1s to be directed at the port of Antwerp and other targets in Belgium, with 2,448 V-1s being launched. The attacks stopped when the last site was overrun on 29 March 1945.