“The Enigma machine was taken on by the German military, starting in 1926,” Alexander explained.’
Most don’t realize just how effective the Enigma Machine actually was. Nor do they know it was the primary system, then the primary back up, for the US Submarine Force up through the early 1980’s.
The US Navy version had twelve rotors, as opposed to the German’s original Enigma, which I think had only three.
I know, I rewired em every month for three years between 1978 and 1981.
Way way ahead of its time, which makes the ‘breaking’ of it even more impressive looking back.
I think the Germany Navy machines had four rotors, and the Wehrmacht/SS machines had three.