In July 1943 Benito Mussolini, Italy's warlord and the father of fascism fell from power in a hastily arranged plot, the details of which even today remain controversial. A cabal of generals took the nation's reins and bungled their way toward an accommodation with the Allies. When General Eisenhower announced an armistice with Italy on the evening of 8 September he believed he had struck a deal that included Italian military cooperation against the Germans. In fact, the generals had promised more than they could deliver and Germany's terrible, swift reprisal shattered Italy's confused air...