After the Second War of Italian Independence, Sardinia ordered two small ironclads from France in 1860. While these ships were under construction, the Italian revolutionary Giuseppe Garibaldi began his campaign to conquer Southern Italy in the name of the Kingdom of Sardinia. He quickly toppled the Kingdom of the Two Sicilies, the largest state in the region in a matter of months. On 17 March 1861, Victor Emmanuel II was proclaimed King of Italy. With the unification of Italy, the various navies of the former Italian states were merged into a single military force, named the Regia Marina (Royal Navy). By the time the two s had been commissioned, they formed the first broadside ironclads of the Italian Regia Marina.