Allied Forces Southern Europe
(Source: Greg Degowski)

Building D held the U.S. Army Element offices, the barracks, concessions (one sold property in Naples....Naples, Florida!!), and a sandwich shop (great ham, cheese and salami for a quarter!)    
The Carabinieri (Italian federal police) are lowering the U.S. Flag at the end of day in front of Building O with Building P to the right.