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OTHER COMMS IN THE HISTORYVERSE:
Thanks to Bletchley Park reading German ciphers, Allied high command could watch the Germans fall for the deception almost in real time.
My favourite is when the germans made a fake airport/landing strip thingy to make the english spend resources bombing it, and the english bombed it with a single fake wood bomb!
The only thing missing was a flag that popped out that said “BOOM!”
The wooden fake bomb allegedly had an inscription saying something like "fake bombs for fake airfields".
https://engineerine.com/rafs-clever-counter-the-wooden-airfield-deception-in-wwii/
found this
another one, which I didn't read because I like the story and don't want to know the truth
It seems to be a “maybe” with anecdotes from soldiers on both sides but little documentation
Excellent 👍🏼!
Did Germany even have radar in WWII?
Some, but since radar was a defensive tool, and the glorious Nazi would of course perpetually be on the victorious offense, so there wasn't much... Political Will to build radar systems.
And when they did, there wasn't much money for it.
But they did exist.
I am not sure if the Nazis did but I read the Allied forces tried to conceal the fact that they invented radars by making up a saying that carrots improve your eye sight and that is how they were able to spot the German planes so far away. I am about 90%-ish sure of this fact
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.
They did. Some of it even pretty sophisticated (They had the first ever scanned array Radar, where you didn't need to rotate the antenna to rotate the beam) The history of Radar is a history of lots of inventions being made in parallel pretty much at the same time by different people who didn't know about each other. For quite some time, technologically, it was an arms race where both sides were pretty much head on, until the Allies managed to pull ahead by inventing the cavity magnetron (allowing drastic downsizing of very powerful Radar transmitters), and bringing US mass production capabilities into the game.
The Battle of Britain famously being won by Radar, for example, is only a very superficial part of the story. What actually won it wasn't Radar alone, but much more the sophisticated system of command and control behind it, turning the data obtained from Radar (and other methods of aircraft detection, such as old fashioned visual observation) into workable interception orders for fighters pretty much in real time. In fact, the Germans didn't think of British Radar as much of a threat at the time, for mainly two reasons:
They had Radar themselves and didn't find it all too useful for air defense, because they lacked a sophisticated system of command and control to process the data obtained by Radar in real time.
They had captured some mobile British Radar sets during their conquest of France, examined them, and found them to be rather crude and less capable than their own.
The chaff from the original post also has a particularly interesting background story: Both sides had invented it independently pretty much at the same time, and then both sat on that invention for an entire year, not daring to use it operationally for fear of the other side copying it, because it's really quite simple to make once you know about it.