The Italian Military Intelligence Service (Italian: Servizio Informazioni Militare , or SIM) was the military intelligence organization for the Royal Army (Regio Esercito ) of the Kingdom of Italy (Regno d'Italia) from 1900 until 1946, and of the Italian Republic until 1949. The SIM was Fascist dictator Benito Mussolini's equivalent to the German Abwehr.
SIM had a large, well-organized cryptologic group, Section 5 (Sezione 5). Section 5 produced codes and ciphers for the Royal Army and higher level enciphered codes for the Italian Royal Navy.
References
Servizio Informazioni Militare Wikipedia(Text) CC BY-SA