Mussolini–D’Annunzio Relationship over Fiume

Mussolini–D’Annunzio Relationship over Fiume was an alliance of convenience between two political figures who could draw on overlapping nationalist appeals but disagreed over when, where, and at whose direction to act. D’Annunzio sought active Fascist support for Fiume and repeatedly urged Mussolini to turn rhetoric into intervention. Mussolini alternated between encouragement, elaborate revolutionary proposals, public defense of the Fiume cause, and calculated restraint. Their relationship illuminates a persistent conflict between D’Annunzio’s attempt to make Fiume the center of a national upheaval and Mussolini’s effort to use the issue without allowing it to displace his domestic political strategy.

First Contact and Political Access

In June 1919, while alone in his office, Mussolini took up pen and paper to write to D’Annunzio. They met in person for the first time on June 23, when D’Annunzio arrived in Rome from Venice. He was staying at the Grand Hotel and had met with the king that day. Before going to the Quirinale, he denied rumors that he and Mussolini, alongside nationalist and royalist figures, were conspiring to overthrow the government. D’Annunzio presented his conduct as open action rather than a plot, a distinction that also expressed the public style through which he sought to frame his politics.

Their meeting took place that afternoon at the Grand Hotel and reportedly lasted an hour. The conversation had no witnesses, so its contents remain uncertain. Margherita Sarfatti had arranged the encounter and was its only identified intermediary. She admired D’Annunzio, remained his friend, and had rejected his advances since 1908; she also promoted an aviation project to Mussolini. The scheme, devised by Giuseppe Brezzi of Ansaldo in Genoa, envisioned D’Annunzio making a Rome-to-Tokyo flight in an aircraft used during the war. Sarfatti hoped to join the undertaking. Her role shows how their association was mediated not only through party politics but also through personal networks and shared fascination with public spectacle.

Fiume and the Unequal Alliance

When D’Annunzio prepared to take Fiume by force, he informed Mussolini in an affectionate letter, but the message was also an instruction: Mussolini was asked to recap and publish an article in the Gazzetta del Popolo and to support the cause during the coming battle. D’Annunzio thus addressed him warmly while treating him as a political subordinate expected to mobilize his newspaper and movement. The distinction between personal intimacy and unequal political expectation would recur in their dealings.

D’Annunzio’s later appeals grew more urgent. He reproached Mussolini for failing to help with fundraising, for not bringing the Arditi, soldiers, volunteers, and Futurists to the cause, and for allowing the government to remain in power. He urged Mussolini to act against his political opponents and threatened that he would intervene himself after consolidating his position in Fiume. The pressure exposed the gap between D’Annunzio’s expectation of a rising and Mussolini’s assessment of what such a move might achieve.

Mussolini’s hesitation had several stated grounds. The army had not moved against the government, and Francesco Saverio Nitti remained in office. Mussolini believed that sending his limited Fascist forces to Fiume would leave Milan exposed; he was also still trying to reconcile with the interventionist left. The navy sympathized with D’Annunzio, but the army was divided, with high command hostile to the rebels. Meanwhile, four hundred thousand steelworkers were striking and denouncing D’Annunzio. A march into the interior, Mussolini reasoned, might open the way to a communist revolution, while D’Annunzio himself could dominate any movement that reached Rome. Restraint was not simply a rejection of the Fiume cause: it reflected Mussolini’s unwillingness to become its secondary figure or risk his forces elsewhere.

Competing Plans and Reversals

At a later meeting with D’Annunzio, the one-armed veteran Ulisse Igliori stopped Mussolini at the entrance to the command center to ask what he thought of a march on Rome. Mussolini, dressed in an amateur aviator’s white outfit, did not offer an immediate commitment. His subsequent proposal to D’Annunzio was itself sweeping: march on Trieste, end the monarchy, install a directorate under D’Annunzio, convene a constituent assembly, annex Fiume, and send trusted troops into Romagna to provoke a republican uprising. Yet Mussolini then advised postponing the plan until after the November 16 elections. The proposal joined revolutionary ambition to electoral calculation, and the delay drained urgency from the scheme.

The contradiction became especially visible in November. In an article in Il Popolo d’Italia, Mussolini declared himself satisfied with the compromise reached by Giovanni Giolitti, calling it the best among the solutions previously proposed. He accepted the settlement while objecting to the treatment of Dalmatia and maintaining that Fiume should be Italian. The article struck directly at the Fiume Fascists, whose cause had depended on the expectation of stronger backing from Mussolini.

At the November 15 meeting of the Central Committee of the Fasci di Combattimento, the division was visible in the seating. Cesare Rossi, Massimo Rocca, and Umberto Pasella stood with Mussolini; Cesare De Vecchi, Pietro Marsich, and other committed Fiume supporters formed the opposing side, while a Dalmatian delegation stood apart. Two hours after withdrawing his own agenda, Mussolini accepted a compromise. He applauded the new borders, objected strongly over Dalmatia, and restated that Fiume must be Italian. The immediate internal crisis was averted, but Rossi voted against the agreed agenda, stunned by Mussolini’s reversal despite having stood beside him during the earlier dispute.

That evening Mussolini wrote again to D’Annunzio, professing continued dedication and asking whether their efforts should claim all of Dalmatia or concentrate on the territory promised by the Treaty of London. He left the question of timing and method to D’Annunzio. The letter sat uneasily beside his public approval of Giolitti’s compromise: it kept open a channel to the poet while avoiding a definite commitment. The relationship operated through precisely this gap between private reassurance and public positioning.

The Blockade and the Final Divide

As the crisis deepened, D’Annunzio sent Alceste De Ambris to make one last attempt to secure Fascist help for the legionnaires. On December 1, on Giolitti’s orders, two armored battleships, eight torpedo destroyers, and two tugs were deployed in front of Fiume’s port, beginning the siege and bringing the city under fire. Mussolini told De Ambris that he was a friend and had publicly promised to urge a national uprising if the government ordered the army to fire on the legionnaires. But he also insisted that D’Annunzio accept the Treaty of Rapallo: rebellion against the government that had signed it was, he argued, impossible because almost all Italians had accepted the settlement with relief and were abandoning the cause.

Mussolini’s newspaper meanwhile condemned the blockade as barbaric coercion, warned against an attack by Italian soldiers on Italian legionnaires, and threatened consequences, while also expressing confidence that bloodshed could be avoided. At the same time, through conversations with prefect Alfredo Lusignoli, he reassured Giolitti that he opposed D’Annunzio’s conduct and that the Fascists would not act. The public defense and private assurance served different audiences. His words kept him associated with the besieged legionnaires; his assurances protected the movement from direct involvement and preserved his political room to maneuver.

At a secret meeting on December 24, Mussolini told his collaborators that Fiume was a secondary issue and that Fascism should not appear intransigent in foreign policy. Its future, he said, lay in domestic politics. When regular Italian troops attacked Fiume at five that afternoon, the committee meeting had already ended and its members were returning home for Christmas. The outcome gave final form to the relationship’s central imbalance: D’Annunzio had demanded that Mussolini make Fiume the test of political action, while Mussolini treated it as an issue to manage, contain, and ultimately subordinate to the Fascist movement’s internal ambitions.