The Italian campaign of 1796–1797 (Italian: Campagna d'Italia), also known as the First Italian Campaign, was a series of military operations in Italy during the War of the First Coalition. Led by Napoleon Bonaparte, the First French Republic's Army of Italy fought and defeated the armies of the Kingdom of Sardinia, the Habsburg monarchy, and the Papal States, as well as various revolts, notably in the Republic of Venice.
The campaign opened with the Montenotte campaign on 10 April 1796, where despite the limitations of his means, Bonaparte descended from the Alps into Italy and achieved a rapid series of victories that decisively knocked Piedmont-Sardinia out of the First Coalition. Next, Napoleon chased the Austrian army across Lombardy, culminating in the French victory at Lodi on 10 May 1796. After putting down revolts in Pavia and Milan, the focus of Napoleon's war in Italy shifted in June 1796 to the long and difficult siege of Mantua, which would see the French blockade the city and defeat four relief efforts by Austrian armies from August 1796 to January 1797. As he besieged Mantua, Napoleon also directed the French forces in a series of invasions of the states of Central and Northern Italy, such as of Modena and Reggio, Genoa, and the Papal States. In addition to these events, Napoleon would also conclude a Franco-Sicilian-Neapolitan treaty on 10 October 1796.