Wikipedia
V-weapons, known in the original German as Vergeltungswaffen ( German: "retaliatory weapons", "reprisal weapons"), were a particular set of long-range artillery weapons designed for strategic bombing during World War II, particularly terror bombing and/or aerial bombing of cities. They comprised the V-1, a pulsejet-powered cruise missile, the V-2, a liquid-fuelled ballistic missile (often referred to as V1 and V2), and the V-3 cannon. All of these weapons were intended for use in a military campaign against Britain, though only the V-1 and V-2 were so used in a campaign conducted 1944–5. After the invasion of Europe by the Allies, these weapons were also employed against targets on the mainland of Europe.
They were part of the range of the so-called Wunderwaffen ( or literally 'wonderweapons') of Nazi Germany.