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This is the place to discuss general issues related to the U-boat war or the war at sea in WWII. 
Re: Significance of Ultra
Posted by: David ()
Date: July 05, 2008 01:26AM

Beside the "blackout" before Bletcheley Park broke M4; also consider this.

ULTRA gave long term feedback on various successes & failures. I don't have specific U-Boat examples to cite, but I recall reading of the break that revealed that OKW had canceled Sea Lion. Knowing that allowed the British to stop worrying about preparing for that battle and move on.

I believe there were intercepts about the Metox ploy; this would have helped play the Germans into not looking for centimeter RADAR earlier.

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