British heroes broke Enigma - Yes they did mostly
>Um, wasn't it Poles that broke the Enigma code? Then handed it to the British several years later?
A Pole part broke -one- of the pre war Enigma machines but it had less wheels and was was less complex then the German Army Enigma (which in turn was less complex then the German Navy Enigma ) as I recall.
There is no doubt that without the the British work both Army and Navy Enigma's would have been unbroken, but yes, they would have been delayed if the commercial Enigma machine information had not been made available.
U571 Film was 100% BS- US didn't help (with Enigma) they only relayed some encrypted messages as I understand it.