A country torn apart by the First World War. A people mourning over 650,000 fallen in the trenches. Politicians humiliated at the Versailles peace table. A poet-soldier who draws crowds to every rally. A city that becomes an emblem of irredentist and nationalist claims. It was in this Italy that the Fiume enterprise began on 12 September 1919: the adventure of Grabiele d'Annunzio and a handful of legionnaires who set out from Ronchi in Friuli, against the will of the established power, to occupy...