In this new study, Jan Gore assesses the success of the V1 campaign. The background to the development of the V1 will be examined, from the initial references to a mystery weapon to the gradual realisation by the British that the Germans were planning both a flying bomb (V1) and a long range rocket (V2). Once the first V1 sites were identified, the British began a strategic bombing campaign, later joined by the Americans. However, as the Normandy landings became imminent in June 1944, Hitler realised he had nothing to lose by delaying his vengeance attacks. A week after D-Day, the first V1s began to reach England. The attacks swiftly intensified. It was a very different campaign from those before. The pilotless planes could be produced cheaply and there was no need to put expensively-trained pilots at risk. The planes could be launched by day or night, whatever the weather. They were true terror weapons, as the first-hand accounts of those who lived through the attacks make clear; ther