adm 1-27186
DESCRIPTION
British report dealing with the security of Royal Navy codes and ciphers during WWII. Details on the work of German naval codebreakers (B-Dienst) against each code. 1945TRANSCRIPT
DESCRIPTION
British report dealing with the security of Royal Navy codes and ciphers during WWII. Details on the work of German naval codebreakers (B-Dienst) against each code. 1945TRANSCRIPT