Originally posted by FMolloy
Read the Code Book by Simon Singh. You will rapidly realise why the above is pure, unadulterated bullshit.
Bletchley Park in England and Pearl Harbour were where pretty much all of the allied code-breaking was carried out. They had the best mathematicians in the world going through the German & Japanese codes and, as is now fairly common knowledge, it was far from unusual that allied intelligence officers would read deciphered messages before they had reached their intended recipients.
The Enigma code was substantially broken before WW2 even began- by the Polish bureau of codebreaking on the basis of French intelligence. This was used for almost all communications. If there are private papers which indicate that Irish intelligence provided "vital information on German cyphers that proved very useful to the Allies towards the end of the war" it was because, and only because, the Allied didn't want anyone knowing the codes were well and truly smashed so they could continue reading Axis communications at will. And Allied for that matter- the UK sold war surplus Enigma machines to their allies until the 1960's (I believe) and read diplomatic, believed secure, communications sent using Enigma until that time.
Just because it is written, doesn't make it so.
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