War of the First Coalition: Napoleon enters Milan in triumph.

Milan (, US also , Lombard: [mil ] (listen); Italian: Milano [milano ] (listen)) is a city in northern Italy, capital of Lombardy, and the second-most populous city proper in Italy after Rome. The city proper has a population of about 1.4 million, while its metropolitan city has 3.26 million inhabitants. Its continuously built-up urban area (whose outer suburbs extend well beyond the boundaries of the administrative metropolitan city and even stretch into the nearby country of Switzerland) is the fourth largest in the EU with 5.27 million inhabitants. According to national sources, the population within the wider Milan metropolitan area (also known as Greater Milan), is estimated between 8.2 million and 12.5 million making it by far the largest metropolitan area in Italy and one of the largest in the EU.Milan is considered a leading alpha global city, with strengths in the fields of art, commerce, design, education, entertainment, fashion, finance, healthcare, media, services, research and tourism. Its business district hosts Italy's stock exchange (Italian: Borsa Italiana), and the headquarters of national and international banks and companies. In terms of GDP, Milan is the wealthiest city in Italy, has the third-largest economy among EU cities after Paris and Madrid, and is the wealthiest among EU non-capital cities. Milan is viewed along with Turin as the southernmost part of the Blue Banana urban development corridor (also known as the "European Megalopolis"), and one of the Four Motors for Europe.

The city's role as a major political centre dates back to the late antiquity, when it served as the capital of the Western Roman Empire, while from the 12th century until the 16th century, Milan was one of the largest European cities, and a major trade and commercial centre, consequently becoming the capital of the Duchy of Milan, which was one of the greatest political, artistic and fashion forces in the Renaissance. Despite losing much of its political and cultural importance in the early modern period, the city regained its status as a major economic and political centre, being considered today as the industrial and financial capital of Italy.The city has been recognized as one of the world's four fashion capitals (the others being London, New York, and Paris) thanks to several international events and fairs, including Milan Fashion Week and the Milan Furniture Fair, which are among the world's biggest in terms of revenue, visitors and growth. It hosted the Universal Exposition in 1906 and 2015. The city hosts numerous cultural institutions, academies and universities, with 11% of the national total of enrolled students. Milan received 10 million visitors in 2018, with the largest numbers of foreign visitors coming from China, United States, France and Germany. The tourists are attracted by Milan's museums and art galleries that include some of the most important collections in the world, including major works by Leonardo da Vinci. The city is served by many luxury hotels and is the fifth-most starred in the world by Michelin Guide. Milan is also home to two of Europe's most successful football teams, A.C. Milan and Inter Milan, and one of Europe's main basketball teams, Olimpia Milano. Milan will host the Winter Olympic and Paralympic games for the first time in 2026, together with Cortina d'Ampezzo.

The War of the First Coalition (French: Guerre de la Première Coalition) was a set of wars that several European powers fought between 1792 and 1797 initially against the constitutional Kingdom of France and then the French Republic that succeeded it. They were only loosely allied and fought without much apparent coordination or agreement; each power had its eye on a different part of France it wanted to appropriate after a French defeat, which never occurred.Relations between the French revolutionaries with neighbouring monarchies had deteriorated following the Declaration of Pillnitz in August 1791. Eight months later, following a vote of the revolutionary-led Legislative Assembly, France declared war on Austria on 20 April 1792; Prussia, having allied with Austria in February, declared war on France in June 1792. In July 1792, an army under the Duke of Brunswick and composed mostly of Prussians joined the Austrian side and invaded France. The capture of Verdun (2 September 1792) triggered the September massacres in Paris. France counterattacked with victory at Valmy (20 September) and two days later the Legislative Assembly proclaimed the French Republic.

Subsequently, these powers made several invasions of France by land and sea, with Prussia and Austria attacking from the Austrian Netherlands and the Rhine, and the Kingdom of Great Britain supporting revolts in provincial France and laying siege to Toulon in October 1793. France suffered reverses (Battle of Neerwinden, 18 March 1793) and internal strife (War in the Vendée) and responded with draconian measures. The Committee of Public Safety was formed (6 April 1793) and the levée en masse drafted all potential soldiers aged 18 to 25 (August 1793). The new French armies counterattacked, repelled the invaders, and advanced beyond France.

The French established the Batavian Republic as a sister republic (May 1795) and gained Prussian recognition of French control of the Left Bank of the Rhine by the first Peace of Basel. With the Treaty of Campo Formio, the Holy Roman Empire ceded the Austrian Netherlands to France and Northern Italy was turned into several French sister republics. Spain made a separate peace accord with France (Second Treaty of Basel) and the French Directory carried out plans to conquer more of the Holy Roman Empire.

North of the Alps, Archduke Charles, Duke of Teschen redressed the situation in 1796, but Napoleon carried all before him against Sardinia and Austria in northern Italy (1796–1797) near the Po Valley, culminating in the Treaty of Leoben and the Treaty of Campo Formio (October 1797). The First Coalition collapsed, leaving only Britain in the field fighting against France.