At Jones's urging, Winston Churchill ordered up an RAF search aircraft on the night of 21 June 1940, and the aircraft found the Knickebein radio signals in the frequency range which Jones had predicted. With this knowledge, the British were able to build jammers whose effect was to "bend" the Knickebein beams so that German bombers spent months scattering their bomb loads over the British countryside.
If there was any justice in the world, this guy would be our most famous pupil. Physicist, war hero and keen amateur magician.
https://en.wikipedia.org/wiki/Reginald_Victor_Jones