Iād like to see a bullet point time line on this. I couldnāt see the Polish having much input post blitzkrieg. And the movies and TV series Iāve seen seem to portray that progress was only made near the end of the war.
Turing was at nothing until the Poles told him how to do it. He then went on and mastered code breaking at an industrial scale. The Poles were able to crack the previous version, but the one used in WWII was much more high tech and was unbreakable to humans.
They also captured an enigma in 1941, which again they wouldnāt have been able to break the codes on mass without.
The Germans also became sloppy in their code setting and message sending.
Went to that Bletchely Park where Turing was said to have cracked it. Impressive place. Most surprising is the Germans never bombed it. Not a small place, surprising they missed it.