According to the surrender of Italy to the allied forces at the end of WWII, the Air Force transport fleet of Savoia Marchetti SM82 should have been destroyed.
However they could have been useful for relief operations nd such proved just after the war.
We must bear in mind that, for instance, just from the land surrended to Yugoslavia, the refugees coming to Italy amounted to some hundred of thousand of people.
So the planes were given to the Military Branch of the Order of Malta, thatis an organisation consiedere, under international law, as an autonomous state.
Of course the Order of Malta had kept neutral in WWII, so they could use the planes for international rescue and relief operations.
The planes were, however, flown and paid for by the italian Air Force.
Andrea