"The Battle of the Beams was a period early in the Second World War when bombers of the German Air Force (Luftwaffe) used a number of increasingly accurate systems of radio navigation, developed by Johannes Plendl, for night bombing in England. British "scientific intelligence" at the Air Ministry fought back with a variety of their own increasingly effective means, involving jamming and distortion of the radio waves."
"Thus the beam was "bent" away from the target. Eventually, the beams could be bent by a controlled amount which enabled the British to fool the Germans into dropping their bombs where they wanted them. A side effect was that as the German crews had been trained to navigate solely by the beams, many crews failed to find either the true equi-signal or Germany again. Some bombers even landed at RAF bases, believing they were back in Germany."
https://en.wikipedia.org/wiki/Battle_of_the_Beams
"The Battle of the Beams was a period early in the Second World War when bombers of the German Air Force (Luftwaffe) used a number of increasingly accurate systems of radio navigation, developed by Johannes Plendl, for night bombing in England. British "scientific intelligence" at the Air Ministry fought back with a variety of their own increasingly effective means, involving jamming and distortion of the radio waves."
"Thus the beam was "bent" away from the target. Eventually, the beams could be bent by a controlled amount which enabled the British to fool the Germans into dropping their bombs where they wanted them. A side effect was that as the German crews had been trained to navigate solely by the beams, many crews failed to find either the true equi-signal or Germany again. Some bombers even landed at RAF bases, believing they were back in Germany."