Age of Revolutions // 1815
Neapolitan War
The Neapolitan War, also known as the Austro-Neapolitan War, was a conflict between the Napoleonic Kingdom of Naples and the Austrian Empire. It started on 15 March 1815, when King Joachim Murat declared war on Austria, and ended on 20 May 1815, with the signing of the Treaty of Casalanza. The war occurred during the Hundred Days between Napoleon's return from exile and before he left Paris to be decisively defeated at the Battle of Waterloo. The war was triggered by a pro-Napoleon uprising in Naples and ended with a decisive Austrian victory at the Battle of Tolentino, after which Bourbon monarch Ferdinand IV was reinstated as King of Naples and Sicily. However, the intervention by Austria caused resentment in Italy, which further spurred on the drive towards Italian unification.
Tactical Map#
11 battles plotted
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War Tempo#
Battle cadence by year
Battles per year
11 battles
Heaviest fighting in 1815 — 11 catalogued battles.
Causes#
The Neapolitan War was triggered in March 1815 by Joachim Murat's decision to stake his throne on Napoleon's return from Elba. When Napoleon landed in southern France on 1 March 1815 and began his march on Paris, Murat — who had ruled the Kingdom of Naples since 1808 — calculated that the restored Bourbon order in Europe was about to collapse. On 15 March he issued his Rimini Proclamation, calling on Italians to rise in the name of national independence, and declared war on Austria[1]. The proclamation was a proximate trigger, but the war grew from structural tensions that had been accumulating since the Congress of Vienna had begun reassembling the pre-Napoleonic map of Europe only months earlier.
The political roots of the conflict lay in the inherently precarious position Murat occupied after Napoleon's first abdication in 1814. At the Congress of Vienna, the great powers — Austria foremost among them — were committed to restoring legitimate dynasties wherever French-installed rulers had displaced them[2]. The Bourbon claimant, Ferdinand IV, had been waiting in Sicily under British protection throughout the Napoleonic period. Murat had briefly secured Austrian acquiescence to his continued rule by defecting from Napoleon in January 1814, but that accommodation was always conditional; once Napoleon escaped Elba, Metternich had every reason to treat Murat as an enemy combatant rather than a recognized sovereign. Murat's declaration of war preempted an Austrian move that was, in diplomatic terms, already under preparation[3].
The ideological dimension of the conflict is equally important. The Rimini Proclamation invoked Italian national sentiment — the first time a reigning Italian monarch had done so publicly — framing the war not as dynastic self-preservation but as a war of liberation against foreign domination[4]. Whether Murat genuinely subscribed to these ideas or deployed them instrumentally is difficult to determine, but the appeal resonated in the Papal States and parts of northern Italy, where French administrative reforms had created constituencies hostile to a return of the old order. For Austria, this made Murat doubly dangerous: not merely a Napoleonic satellite to be liquidated, but a potential catalyst for Italian nationalist agitation that threatened the stability of Lombardy-Venetia and the Habsburg position on the peninsula as a whole.
The geopolitical calculation that led Murat to act when he did reflected an accurate reading of the broader strategic moment. Napoleon's return had paralyzed the Congress of Vienna and committed the major powers to a new coalition campaign in northern Europe. Murat evidently judged that Austrian forces would be stretched and that a rapid advance northward through the Italian peninsula could consolidate a defensive position before a response could be organized[5]. The judgment proved wrong: Austria was able to concentrate sufficient forces in Italy to conduct an effective two-pronged campaign, and the decisive engagement at the Battle of Tolentino in May 1815 shattered Murat's army before Napoleon's own fate was decided at Waterloo. The speed of the Austrian response underscored how thoroughly Murat had misread the balance of forces available to Vienna on the Italian front.
Consequences#
The Battle of Tolentino in mid-May 1815 sealed the military collapse of Joachim Murat's kingdom, and the Treaty of Casalanza, concluded on 20 May 1815, formalized the Neapolitan capitulation[1]. Under its terms, Murat's forces disbanded and the Bourbon monarch Ferdinand IV was restored to the throne of Naples and Sicily, reconstituting the political order that the Napoleonic era had displaced. Murat himself fled the peninsula; his subsequent attempt to reclaim the kingdom by landing in Calabria in October 1815 ended in his capture and execution by firing squad[2], closing the brief episode of Napoleonic rule in southern Italy definitively.
The restoration of Bourbon authority was underwritten entirely by Austrian power, a fact whose political significance extended well beyond the immediate settlement. Austria emerged from the war as the indispensable guarantor of legitimist order on the Italian peninsula, a role it would exercise coercively for the next half century. The Congress of Vienna's framework, which had already assigned Austrian dominance over Lombardy and Venetia, was reinforced rather than disrupted by the campaign; the swift suppression of a French-aligned monarchy demonstrated that no Italian state could sustain an independent foreign policy in defiance of Vienna's preferences[3]. This configuration — Austrian military preponderance over fragmented Italian polities — became the structural condition against which liberal and nationalist movements would define themselves in the decades that followed.
The popular appeal Murat had attempted to harness by issuing the Rimini Proclamation, calling Italians to unite under a single national government, did not evaporate with his defeat[4]. On the contrary, the spectacle of Austrian troops restoring a foreign dynasty generated a durable resentment that fed directly into the currents of the Risorgimento. Nationalists of the 1820s, 1830s, and 1848 generation drew on the Neapolitan War as evidence that Italian political aspirations could not be achieved within the legitimist order and that Austrian intervention would be the permanent obstacle to unification. In this sense the war, though a military failure, contributed to the political vocabulary and grievances that eventually produced a unified Italian state.
What the conflict resolved only on the surface was the question of constitutional government in southern Italy. Ferdinand IV's restoration was unconditional; no charter constrained his authority, and the constitutional experiments briefly entertained under Murat were abandoned[5]. The underlying social pressures — the expectations of a professional officer class formed under Napoleonic administration, the aspirations of a nascent liberal bourgeoisie, and the institutional legacy of French-style centralized governance — persisted beneath restored absolutism. They would resurface in the Neapolitan revolution of 1820, which forced Ferdinand (by then Ferdinand I of the Two Sicilies) to grant a constitution, only for Austria to suppress that movement as well. The cycle exposed the central unresolved problem: Bourbon legitimacy in southern Italy rested on external military support rather than domestic consent, a fragility the Neapolitan War had created rather than cured.
Campaigns#
0 operational sequences
Battles#
11 catalogued engagements
- Battle of Carpi
April 10, 1815
The supplied overview describes a 1701 engagement from the War of the Spanish Succession rather than the 1815 Battle of Carpi in the Neapolitan War. Because the source text does not correspond to the battle as identified, and the structured facts provide only force sizes and a Neapolitan casualty figure without context for what was decided or shifted, no grounded significance can be written for this entry.
- Battle of Casaglia
April 12, 1815
The Battle of Casaglia was fought during the Neapolitan War of 1815, in which Austria moved to suppress Joachim Murat's bid to hold the Kingdom of Naples against the returning Bourbon order. At Casaglia, near Ferrara, an Austrian force of roughly 4,500 men under Johann Friedrich von Mohr engaged a larger Neapolitan force of approximately 7,000 under Murat's command. Despite the numerical disadvantage, the Austrians retook the village, inflicting around 1,000 casualties on the Neapolitan side. The engagement was part of a broader Austrian offensive that steadily rolled back Murat's forces in northern Italy, contributing to the collapse of his campaign and ultimately to his loss of the Neapolitan throne.
- Battle of Castel di Sangro
April 28, 1815
The Battle of Castel di Sangro was a minor engagement of the Neapolitan War, fought in central Italy. The Neapolitan force, numbering roughly twice the strength of the opposing Austrian contingent, was routed, with casualties recorded between 206 and 400 men. The defeat contributed to the broader collapse of Joachim Murat's campaign against Austria, a conflict that ended with the destruction of Neapolitan resistance and the restoration of Bourbon rule over the Kingdom of Naples.
- Battle of Cesenatico
April 23, 1815
The Battle of Cesenatico was a minor engagement of the Neapolitan War, fought on 23 April 1815 at the Adriatic coastal town of Cesenatico. The Kingdom of Naples committed approximately 3,000 troops to the action and suffered between 200 and 500 casualties. Beyond its place as one engagement within the brief Neapolitan War of 1815, the available record does not indicate what the battle decided or how it affected the broader campaign.
- Battle of Occhiobello
April 8, 1815
The Battle of Occhiobello on 8–9 April 1815 marked the turning point of the Neapolitan War. Joachim Murat, commanding a Neapolitan force of 25,000, was repulsed by an Austrian force under Johann Frimont numbering roughly 10,000 while attempting to cross the Po River at Occhiobello. Naples suffered approximately 2,000 casualties in the failed crossing. The engagement broke Murat's offensive momentum: following Occhiobello, the Austrians did not lose another engagement for the remainder of the war, leaving Murat unable to recover the initiative and setting the course for the ultimate Neapolitan defeat in the conflict.
- Battle of Pesaro
April 28, 1815
The Battle of Pesaro was a minor engagement of the Neapolitan War, fought on 28 April 1815 at the town of Pesaro. The Neapolitan force under Michele Carrascosa numbered approximately 3,000 troops and sustained between 200 and 250 casualties. Beyond its occurrence within the broader campaign by the Kingdom of Naples against the Austrian-backed coalition during the Hundred Days period, the available record does not detail what the engagement decided or shifted at the operational level.
- Battle of Ronco
April 21, 1815
The Battle of Ronco was a further reverse for Joachim Murat's army during the Austrian advance through northern Italy in the Neapolitan War of 1815. Already weakened by the disaster at Occhiobello, the Neapolitan army turned at the Ronco River in an attempt to check the pursuing Austrian corps under Adam Albert von Neipperg. The failure of that rearguard action cost Murat nearly 1,000 killed or wounded, compelled a continued retreat southward to the Savio River, and accelerated the disintegration of his force as additional troops deserted. The engagement demonstrated that the Neapolitan army, outnumbering the Austrians by more than two to one at this engagement, could no longer hold a defensive line against a pursuing enemy, deepening the operational collapse that would culminate in the loss of Murat's kingdom.
- Battle of San Germano
May 15, 1815
The Battle of San Germano was the concluding engagement of the Neapolitan War, pitting an Austrian force of 8,000 under Laval Nugent von Westmeath against Joachim Murat's Neapolitan army of 15,000. Despite holding a substantial numerical advantage, Murat's forces suffered approximately 3,500 casualties and were ultimately routed at Mignano by 17 May 1815. The defeat effectively ended Murat's attempt to retain his kingdom, collapsing Neapolitan resistance and securing Austrian dominance over the Italian peninsula in the immediate post-Napoleonic settlement.
- Battle of Scapezzano
May 1, 1815
The Battle of Scapezzano was a brief engagement on 1 May 1815 during the Neapolitan War, pitting an Austrian corps under Adam Albert von Neipperg against a Neapolitan division under Michele Carrascosa. The Austrian force outnumbered the Neapolitans by nearly two to one, reflecting the broader disparity in strength that characterized the Austrian campaign against Joachim Murat's kingdom. Beyond its place as one of the engagements of that short war, the recorded details are too limited to assess its specific effect on the campaign's outcome or what it decided operationally.
- Battle of Tolentino
May 3, 1815
The Battle of Tolentino was the decisive engagement of the Neapolitan War, fought as Joachim Murat attempted to retain the Kingdom of Naples throne in the face of the Congress of Vienna's deliberations. The battle took place during the Hundred Days, when Napoleon's return from exile had reopened the broader contest between Napoleonic France and the Seventh Coalition. Despite fielding a substantially larger force than the Austrian army under Frederick Bianchi, Murat's army suffered over 4,000 casualties and was effectively broken as a fighting force. The defeat ended Murat's bid to hold his kingdom, directly resulting in the restoration of the Bourbon monarch Ferdinand I. Like Waterloo, Tolentino demonstrated that the Coalition powers could suppress Napoleonic-aligned regimes across multiple theaters, foreclosing any prospect of a reconstituted Napoleonic order in the Italian peninsula.
- Battle of the Panaro
April 3, 1815
The Battle of the Panaro was an early Neapolitan victory in the Neapolitan War of 1815, in which King Joachim Murat's forces defeated a smaller Austrian force under Frederick Bianchi on the banks of the Panaro River south of Modena. The engagement compelled the Austrians to withdraw behind the Po River, representing a meaningful territorial and operational gain for Naples at the outset of the campaign. The Neapolitan force of 7,000 inflicted 461 Austrian casualties while suffering 409 of their own, reflecting a closely fought but decisive action. By pushing Bianchi's force back across the Po, Murat temporarily seized the initiative in northern Italy during the opening phase of the war.
Famous commanders of Neapolitan War
8 shown
Joachim Murat
Marshal of the Empire1767–1815
French Empire
6 battles ledΣ183 int
Michele Carrascosa
general1774–1852
4 battles ledΣ143 int
Frederick Bianchi
general field marshal1768–1855
3 battles ledΣ95 int
Adam Albert von Neipperg
general1775–1829
2 battles ledΣ66 int
Guglielmo Pepe
general1783–1855
2 battles ledΣ56 int
Johann Frimont
general field marshal1759–1831
2 battles ledΣ52 int
Pietro Colletta
general1775–1831
1 battle ledΣ39 int
Laval Nugent von Westmeath
field marshal1777–1862
1 battle ledΣ34 int
Ranked by Σ battle intensity across battles led in scope. Strategic leaders (chiefs of state / supreme commanders) pinned to the top.
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