Thanks to Bletchley Park reading German ciphers, Allied high command could watch the Germans fall for the deception almost in real time.
Thanks to Bletchley Park reading German ciphers, Allied high command could watch the Germans fall for the deception almost in real time.
Both sides had radar in general, and knew about the other side having it.
The carrot propaganda part is true though, but it is specifically about covering up the fact that the allies had developed aircraft intercept radar, i.e. radar mounted on the planes.
https://www.smithsonianmag.com/history/carrots-cant-help-you-see-in-the-dark-heres-how-world-war-ii-propaganda-campaign-popularized-the-myth-28812484/