What you've got to understand from The Godfather is it's totally a work of fiction but based on seperate real events. Also very old and "back in the day" and reall glamorises the mafia. Nowadays all the tradition and codes are thrown out the window and stupid people take over as bosses. Try somewhere inbetween for the truth. No one but the authorities and the real mob guys will know. We have just got to take what we know and analyse it.

Caporegime/Capodecima - not too sure on this but as far as I know it's the same. Get someone elses opinion on this though. Decima sounds very Roman like. Every tenth or something. Regime speaks for itself. Maybe a translation flaw through time.