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The NSA publication [Solving the ENIGMA: History of the Cryptanalytic Bombe](https://media.defense.gov/2022/Sep/29/2003087366/-1/-1/0/SOLVING%20THE%20ENIGMA%20-
by robinzfc 2y ago
The NSA publication [Solving the ENIGMA: History of the Cryptanalytic Bombe](https://media.defense.gov/2022/Sep/29/2003087366/-1/-1/0/SOLVING%20THE%20ENIGMA%20-%20HISTORY%20OF%20THE%20CRYPTANALYTIC%20BOMBE.PDF https://media.defense.gov/2022/Sep/29/2003087366/-1/-1/0/SOL...) is the best written account of the history of breaking ENIGMA I know about.