June 2024

D-Day minus Three

2024 is the 80 anniversary of the D-Day landings at Normandy.

Radar, and technology used to jam it, played a decisive role in the landings.

Developed by Joan Curran, ‘chaff’, also known as ‘window’, was dropped by Avro Lancasters over the Straits of Dover to confuse German radar sets, creating a signal that was mistaken by German radar operators as an invasion fleet heading towards Calais. This helped to deceive Nazi High Command about the true location of the main landings.


Joan Curran

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D-Day minus Three