In May 1942, the 99th Pursuit Squadron was renamed the 99th Fighter Squadron. It earned three Distinguished Unit Citations (DUC) during World War II. The DUCs were for operations over Sicily from 30 May–11 June 1943, Monastery Hill near Cassino from 12–14 May 1944, and for successfully fighting off German jet aircraft on 24 March 1945. The mission was the longest bomber escort mission of the Fifteenth Air Force throughout the war. The 332nd flew missions in Sicily, Anzio, Normandy, the Rhineland, the Po Valley and Rome-Arno and others. Pilots of the 99th once set a record for destroying five enemy aircraft in under four minutes.