Unification of Italy Timeline

Milanese citizens rose against Austrian rule during five days of barricade fighting. Field Marshal Radetzky withdrew his army from the city, allowing a provisional government to form and persuading Charles Albert of Piedmont-Sardinia to enter the war against Austria.

Image source: Five Days of Milan

Charles Albert declared war on Austria, presenting Piedmont-Sardinia as the champion of Italian liberation. Volunteer forces joined the campaign, but competing governments and weak coordination undermined the effort against Austria's experienced army.

Image source: First Italian War of Independence

Austrian forces defeated the Piedmontese army at Custoza, forcing Charles Albert to abandon Lombardy and sign an armistice. The defeat ended the first phase of the 1848 war and exposed Piedmont's military and political weaknesses.

Image source: Battle of Custoza (1848)

The Piedmontese army was decisively defeated by Austria at Novara during the renewed First Italian War of Independence. Charles Albert abdicated in favor of his son Victor Emmanuel II, and the defeat postponed military unification for a decade.

Image source: Battle of Novara (1849)

Austria declared war on Piedmont-Sardinia after Cavour maneuvered Vienna into appearing the aggressor. French and Piedmontese forces then campaigned in Lombardy, while nationalist uprisings destabilized several central Italian duchies and legations.

Image source: Second Italian War of Independence

Franco-Piedmontese forces defeated the Austrian army at Magenta, opening the way to Milan. The victory enabled Victor Emmanuel II and Napoleon III to enter the city and marked the liberation of Lombardy from Austrian rule.

Image source: Battle of Magenta

The Battle of Solferino was a bloody Franco-Piedmontese victory over Austria and one of the largest European battles since Waterloo. Its carnage profoundly affected Henry Dunant and helped inspire the founding of the International Red Cross.

Image source: Battle of Solferino

Giuseppe Garibaldi landed at Marsala with roughly one thousand volunteers, known as the Redshirts, to overthrow Bourbon rule in Sicily. Their campaign transformed a risky insurgency into the most dramatic military advance of the Risorgimento.

Image source: Expedition of the Thousand

Garibaldi's volunteers defeated a larger Bourbon force at Calatafimi. The victory strengthened the insurrection, attracted Sicilian recruits, and allowed Garibaldi to continue toward Palermo despite his army's limited training and equipment.

Garibaldi entered Palermo and fought street battles that forced the Bourbon commander to negotiate an evacuation. Control of Sicily shifted decisively to the revolutionary forces, whose provisional administration prepared the island for annexation to the emerging Italian state.

Garibaldi defeated Bourbon troops at Milazzo, securing northeastern Sicily. The victory completed the conquest of the island and enabled the expedition to prepare for its mainland invasion across the Strait of Messina.

Garibaldi's forces crossed from Sicily to Calabria and advanced rapidly through the mainland territories of the Kingdom of the Two Sicilies. Bourbon resistance weakened as local support, military defections, and political collapse opened the road to Naples.

Garibaldi entered Naples after King Francis II abandoned the capital. He proclaimed himself dictator in the name of Victor Emmanuel II, creating a potential conflict between Garibaldi's revolutionary authority and Piedmont's monarchical annexation plans.

Piedmontese forces defeated the papal army at Castelfidardo. The victory opened the Marche and Umbria to annexation, isolated the Papal States from the south, and allowed Victor Emmanuel II to intervene directly in the unification process.

Italy allied with Prussia against Austria during the Austro-Prussian War, hoping to acquire Venetia. Although Italian forces suffered defeats on land and sea, Prussia's victory forced Austria to cede Venetia through the wider diplomatic settlement.

Austria defeated the Italian army at Custoza despite Italy's numerical advantages. Poor coordination and leadership exposed continuing weaknesses in the Italian military, although the defeat did not prevent Italy from obtaining Venetia after Austria's broader loss to Prussia.

The Austrian navy defeated Italy's larger fleet near the island of Lissa. The naval disaster became a symbol of organizational failures within the young kingdom, even as the diplomatic outcome of the war brought Venetia into Italy.

Garibaldi's attempt to seize Rome was defeated at Mentana by papal troops reinforced with French soldiers and modern Chassepot rifles. The failure preserved papal rule and French protection of Rome for several more years.

After France withdrew its protective forces during the Franco-Prussian War, Italian troops breached the Aurelian Walls at Porta Pia and entered Rome. The papal government surrendered, and Rome became the effective capital of the Italian national state.

Image source: Capture of Rome

Camillo Benso, Count of Cavour, became prime minister of Piedmont-Sardinia. He pursued constitutional government, economic modernization, and diplomatic alliances, making Piedmont the principal state capable of leading a practical unification strategy.

Image source: Camillo Benso, Count of Cavour

Piedmont-Sardinia sent troops to fight alongside Britain, France, and the Ottoman Empire in the Crimean War. Cavour used the resulting diplomatic access at the Congress of Paris to publicize the Italian question and seek French support against Austria.

Image source: Crimean War

Cavour secretly met Napoleon III at Plombières and secured a French commitment to support Piedmont in a war against Austria. In return, France was promised Nice and Savoy, while the proposed political settlement would reorganize much of northern and central Italy.

France and Piedmont-Sardinia formalized their alliance against Austria. The agreement prepared the diplomatic framework for the Second Italian War of Independence and made a major European intervention in the Italian question possible.

Napoleon III unexpectedly agreed to an armistice with Austria at Villafranca, alarming Cavour and leaving Venetia under Austrian control. Austria ceded Lombardy to France, which transferred it to Piedmont-Sardinia, but the settlement did not resolve Italy's political crisis.

Voters in Tuscany, Modena, Parma, and the Papal Legations overwhelmingly approved annexation to Piedmont-Sardinia. The plebiscites consolidated northern and central territories, while the transfer of Nice and Savoy to France provoked nationalist controversy.

Italy and France agreed that Italian troops would not attack the Papal States, while France promised to withdraw its garrison from Rome. Italy also moved its capital from Turin to Florence, a compromise intended to reduce tensions over the Roman question.

Plebiscites in the mainland and island territories of the former Kingdom of the Two Sicilies approved annexation to Victor Emmanuel II's kingdom. The result brought most of the Italian peninsula under one monarch, though administration and resistance remained contentious.

Image source: Kingdom of the Two Sicilies

Garibaldi met Victor Emmanuel II near Teano and recognized him as king of Italy. Garibaldi surrendered control of the conquered southern territories, preventing a clash between revolutionary republicanism and the Piedmontese monarchy.

The parliament meeting in Turin proclaimed Victor Emmanuel II king of Italy. The new kingdom united most of the peninsula but still excluded Venetia, Rome, and parts of the Alpine borderlands, leaving the Risorgimento incomplete.

Image source: Kingdom of Italy

Cavour died only months after the proclamation of the Kingdom of Italy. His death removed the statesman who had coordinated Piedmontese modernization, diplomacy, and annexation, leaving the new country to confront severe political and regional tensions.

Garibaldi attempted to march on Rome, but Italian government troops intercepted his volunteers at Aspromonte. Garibaldi was wounded and arrested, demonstrating that the kingdom would prevent unauthorized action against French-protected papal Rome.

A plebiscite approved the annexation of Venetia to the Kingdom of Italy after Austria transferred the territory through France. Venice and the surrounding region joined Italy, leaving Rome as the principal unresolved center of the national project.

A plebiscite in Rome and the former Papal States overwhelmingly approved annexation to Italy. The vote provided constitutional justification for incorporating Rome, although Pope Pius IX rejected the settlement and considered himself a prisoner in the Vatican.

The Italian government formally transferred the capital from Florence to Rome. This move symbolically completed the territorial phase of Italian unification, while questions about church-state relations, regional inequality, and national integration remained unresolved.

Image source: Rome