Reminded of that Neal Stephenson Cryptonomicon but where after cracking the enigma the allies play a whole game of pretend so their adversaries don’t notice tha

Reminded of that Neal Stephenson Cryptonomicon but where after cracking the enigma the allies play a whole game of pretend so their adversaries don’t notice that their communications have been compromised. That’s ww2 - can’t imagine how much more complex and layered this shit would be. You don’t want them to know that you know that they know that you know etc.