Don Calo (1877-1954) was the head of the Sicilian Mafia. On July 11th, 1943 while Vito's squad was being pinned down by Italian blackshirts (forces loyal to Benito Mussolini), Don Calo started to speak from a tank informing the Italians that they should trust the Americans and together, could bring an end to Il Duce (Mussolini)'s rule. Don Calo is believed to be very respected because as Vito states: "Don Calo, the head of the Sicilian mob. An entire garrison of troops surrendered that day. Why? Because he told 'em to". He is likely well known because Joe was surprised that Vito had actually seen the man.