All actors accepted to be uncredited in honor of the civilians who died during the uprising and remained without official recognition.
The film was dedicated to the memory of Gennaro Capuozzo, the 12-year-boy depicted in the movie, who was awarded by the Italian Government the posthumous Gold Medal of Valor.
PROLOGUE: "The episodes in this film were inspired by actual events. September, 1943---Hitler's war is raging from the Mediterranean to Stalingrad...but in Italy, Mussolini and his Blackshirts are finished. Marshal Badoglio has taken over, and surrender is in the air. But from North to South, the Nazis have the Italian boot in a grip of steel. They must hold it---or see the soft underbelly of Europe opened wide to the Allied armies. And then came...The Four Days of Naples."
In the closing credits, the EPILOGUE reads: "The film is dedicated to the memory of the twelve-year-old Gennaro Capuozzo, awarded the Gold Medal of Military Valour, to the valiant Neapolitan people, and to all the Italians who fought for freedom."
In the closing credits, the EPILOGUE reads: "The film is dedicated to the memory of the twelve-year-old Gennaro Capuozzo, awarded the Gold Medal of Military Valour, to the valiant Neapolitan people, and to all the Italians who fought for freedom."
In many scenes, actual bullets are being shot into vehicles. The holes go inward not outward, which a fake one would make.
The film's title comes from the four days of the city's uprising against the German occupying forces from 27 to 30 September 1943, before the arrival of Allied forces on 1 October 1943.