Rarely seen outside of Italy, Days of Glory is an extremely important work: the first documentary on the German occupation of Rome and the Italian war of liberation. (It covers some of the same territory as Rossellini's war trilogy, and Carlo Lizzani has compared it to Rome Open City, saying that both films are necessary for an understanding of the Italian experience of the war.) Made for the Allies' Psychological Warfare Branch, the film depicts various key episodes in the work of the Italian Resistance from September 1943 until the liberation of the North in the spring of 1945. Visconti had eight cameras put at his service to cover the trial of Fascist Pietro Caruso. Among the electrifying details he documented was the crowd of spectators mistaking a witness for the prosecution for Caruso and killing him.