Allegedly, the German kept the 1st 3 rotors of the 4-rotor in the same position as the weather report 3-rotor machine, once that came to light it wasn't so bad.What they needed was a 4-rotor Enigma, designed only for U-boat use/U-bot communications. THAT was the solid-gold ring.
The guys who captured the M4 codebooks drowned going back for the actual machine. One of them had lied about his age to join the Navy. The level of sacrifice in those days humbles me.




















































