With the company of Fiume (Impresa di Fiume, in Italian) it is understood a historical event in which Gabriele D'Annunzio guided a group of about 2600 rebels of the Regio Esercito - the Grenadiers of Sardinia - to Ronchi, near Monfalcone, in Fiume (present Rijeka), where D'Annunzio proclaimed the annexation to the Kingdom of Italy of the city the 12 of September of 1919. Background
According to the Hungarian census of 1910 (where the language of use appears), the population of Fiume was 49,806 inhabitants and was divided as follows: 24,212 reported having Italian as a language of use, 12,926 Serbo-Croatian and other languages, especially Hungarian, Slovenian and German. The census did not include data from the town of Sussak, a Croatian-majority neighborhood that recently emerged east of the river that subdivided the municipality of Fiume (formally dependent on the Hungarian crown as Corpus separatum). The city of the Fiume had always fought against the own annexation to the Kingdom of Croatia, demanded by the Croatian minority. At the end of World War I, in the peace treaties, Italy obtained the unredeemed lands of Trento and Trieste but the opposition of the American president Woodrow Wilson led to a situation of stagnation as far as Dalmacia and Fiume, not promised to Italy with the London pact and claimed by the Italians because they lived there compatriots. In addition, as early as October 1918, a National Council had been established at Fiume, which advocated annexation to Italy, of which President Antonio Grossich was appointed. The Italian representatives in Paris, Vittorio Emanuele Orlando and Sidney Sonnino, having left the negotiating table controversially on 24 April, having failed to produce the expected results, returned on May 5.
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