During WWII, the German army used a radar system called Wotan. The British scientist R.V. Jones figured out how the system worked by assuming that it used a single beam based on the fact that the Germanic god Wotan had only one eye.

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 for night bombing in the United Kingdom. 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. The period ended when the Wehrmacht moved their forces to the East in May 1941, in preparation for the attack on the Soviet Union.

Background

The Lorenz beam and its two lobes. The “equisignal” area in the centre grows narrower, and more accurate, as the aircraft approaches the runway.

Prior to the war, Lufthansa and the German aircraft … Continue Reading

Source: https://en.wikipedia.org/wiki/Battle_of_the_Beams#Countermeasure_2