The most usual answer would probably be Radar. However, the Germans also had radar at the same time as the British, but used it differently. Although radar gave the RAF advanced warning of approaching enemy aircraft, the way the information was used to vector fighter squadrons to their targets was probably the main reason the RAF held the Luftwaffe at bay during the batle of Britain.
Technology that helped Britain's Royal Air Force combat the German luftwaffe starting in the Battle of Britain
Yes, radar helped to pick up German aircraft after about 1940.
the German air force
Paul A. Jackson has written: 'Royal Air Force Germany' -- subject(s): Great Britain, Great Britain. Royal Air Force Germany 'British and European combat aircraft' -- subject(s): Airplanes, Military, Military Airplanes
British = Royal Air Force, RAF German = Luftwaffe
The first one was a Radar, it gave them an advantage on the number, speed, and direction of incoming airplanes and the second was a German code-making device that enabled the British to decode many German codes.
The british air force is known as the RAF; royal air force. The Deutsche Luftwaffe or Luftwaffe (German: "Air Arm", IPA: ['luftvafə]) is the commonly used term for the German air force.The Royal Air Force. They are still called this today.
Royal Air Force-RAF
It was against the German Air Force, luftwaffe, vs. the British Royal Air Force.
Britain's Royal Air Force (RAF).
Radar
The British Royal Air Force and the German Luftwaffe.