Map - San Severo, Italy San Severo (formerly known as Castellum Sancti Severini, then San Severino and Sansevero; locally Sanzëvírë) is a city and comune of about 54,000 inhabitants in the province of Foggia, Apulia, south-eastern Italy. During the Second World War, on September 9, 1943, a group of Italian soldiers were involved in an episode of resistance, refusing to surrender to the Germans. By September 28, the Germans blew up the telephone exchange, the Casillo mill and several bridges, including that of the railway. During World War II, San Severo was the home of a US Airfield from April 2, 1944 to March 3, 1945.