Beginning with the signing of the
Treaty of Defensive Alliance between France and the Kingdom of Sardinia on January 26, 1859, Piedmontese Prime Minister
Cavour began preparations for the liberation of northern Italy and the inevitable war with
Austria. In the face of military preparations, Austrian grievances were not long in coming, and on April 24, 1859, Cavour, after rejecting Vienna's
ultimatum instructing the
Kingdom of Sardinia to demobilize
its army, received a declaration of war from Austria.
Napoleon III's
France honored the alliance with the Kingdom of Sardinia, initiating the
Second Italian War of Independence. During the conflict, the Sardinian-French army achieved two important victories: the one at
Magenta (June 4, 1859) and the very bloody one at
Solferino (June 24, 1859). The defeated Austrian army retreated east of the
Mincio River while in Paris, contrary to Cavour's hopes, Napoleon III began to consider the possibility of an armistice with Vienna. Important domestic and international political events were, in fact, dangerously ripening for France.
The situation in Europe , a vassal kingdom of Austria, the main object of the Villafranca armistice. . Prussia in blue, the Austrian Empire in yellow, and Lombardy-Venetia included in the Austrian Empire but outside the confederation's borders. Almost isolated in his country by his decision to ally with the
Kingdom of Sardinia and provoke a war in Italy,
Napoleon III found himself in June 1859 facing the international consequences of his decision. After the
Battle of Magenta, Prussian Prince Regent
Wilhelm moved closer to the positions of the party hostile to
France, which defined
Prussia as a party to a conflict involving
Austria, a member and leader of the
Germanic Confederation. As the Sardinian-French army approached the
Mincio, Prussia therefore decided on June 11, 1859, to mobilize six army corps to form an army to be deployed along the
Rhine on the French border. In Britain the Prussian proposal for mediation was not received with particular interest: the new Liberal prime minister
Henry John Temple, 3rd Viscount Palmerston, although closer to French positions than his predecessor
Edward Smith-Stanley, 14th Earl of Derby was hampered by the Conservative followers in the government and by
Queen Victoria, so the new executive differed little from the old one. The proposal found a different reception in
Saint Petersburg, where Ambassador
Otto von Bismarck, the future chancellor, reported to Berlin of the favorable Russian disposition to joint mediation. At the same time Tsar
Alexander II decided that he could go no further in favor of France. Russia was unable to seriously protect it from Prussia, since it was already engaged in the onerous problem of
serfdom.
The situation in France Faced with Prussian mobilization, British indifference, and a weak Russian demeanor,
Napoleon III also faced an internal crisis. Firmly opposed to the war in
France were Foreign Minister
Alexandre Walewski, moderate Catholic and conservative circles, Empress
Eugénie, and War Minister
Jacques Louis Randon. Walewski communicated to Napoleon III the warning that came to him indirectly from St. Petersburg, that if the Sardinian-French army violated the territory of the
German Confederation (in the
Trentino region for example), even if only with
Giuseppe Garibaldi's volunteers, Prussia would go to war with the other German states against France. The situation thus threatened to spiral out of Napoleon III's control. Resolved, therefore, to pursue the road to peace, Napoleon III, without waiting for the outcome of a listless British attempt to communicate France's intentions to Austria, sent General Émile Félix Fleury (1815-1884) on July 6, 1859, to the headquarters of the Austrian Emperor Franz Joseph with a proposal for an armistice. == The truce (July 6–8, 1859) ==