Today in World War II History—Sept. 12, 1943 POSTED: Wednesday, September 12, 2018 by Sarah Sundin Otto Skorzeny, Harald Mors, and Benito Mussolini in front of Hotel Campo Imperatore, Gran Sasso, Italy, 12 Sept 1943 (German Federal Archive: Bild 101I-567-1503C-15) 75 Years Ago—Sept. 12, 1943: German SS detachment in gliders rescues Mussolini from Gran Sasso, where he was imprisoned by the Italian government. In New Guinea, Australians take Salamaua and its airfield. US War Ration Book Three becomes active.