Neapolitan War in the context of "Seventh Coalition"

The Hundred Days (French: les Cent-Jours IPA: [le sɑ̃ ʒuʁ]), also known as the War of the Seventh Coalition (French: Guerre de la Septième Coalition), marked the period between Napoleon's return from eleven months of exile on the island of Elba to Paris on 20 March 1815 and the second restoration of King Louis XVIII on 8 July 1815 (a period of 110 days). This period saw the War of the Seventh Coalition, and includes the Waterloo campaign and the Neapolitan War as well as several other minor campaigns. The phrase les Cent Jours (the Hundred Days) was first used by the prefect of Paris, Gaspard, comte de Chabrol, in his speech welcoming the king back to Paris on 8 July.

Napoleon returned while the Congress of Vienna was sitting. On 13 March, seven days before Napoleon reached Paris, the powers at the Congress of Vienna declared him an outlaw, and on 25 March, Austria, Prussia, Russia and the United Kingdom, the four Great Powers and key members of the Seventh Coalition, bound themselves to put 150,000 men each into the field to end his rule. This set the stage for the last conflict in the Napoleonic Wars, the defeat of Napoleon at the Battle of Waterloo, the second restoration of the French kingdom, and the permanent exile of Napoleon to the distant island of Saint Helena, where he died in 1821.

The Kingdom of Naples (Italian: Regno di Napoli; Neapolitan: Regno 'e Napule) was a French client state in southern Italy that existed from 1806 to 1815. It was founded after the Bourbon Ferdinand IV & III of Naples and Sicily sided with the Third Coalition against Napoleon, and was in return ousted from his kingdom by a French invasion. Joseph Bonaparte, elder brother of Napoleon, was installed in his stead: Joseph conferred the title "Prince of Naples" to be hereditary on his children and grandchildren. When Joseph became king of Spain in 1808, Napoleon appointed his brother-in-law Marshal Joachim Murat to take his place. Murat was later deposed by the Congress of Vienna in 1815 after striking at Austria in the Neapolitan War, in which he was decisively defeated at the Battle of Tolentino.

The Battle of Tolentino was fought from 2–3 May 1815 near Tolentino, Kingdom of Naples in what is now Marche, Italy: it was the decisive battle in the Neapolitan War, fought by the Napoleonic King of Naples Joachim Murat to keep the throne after the Congress of Vienna. The battle occurred during the Hundred Days following Napoleon's return from exile and, like the Battle of Waterloo, resulted in a decisive victory for the Seventh Coalition, leading to the restoration of the previous Bourbon king, Ferdinand I.