In 1866, Victor Emmanuel II allied with Prussia during the Austro-Prussian War, waging the Third Italian War of Independence which allowed Italy to annexe Venetia. Finally, in 1870, as France abandoned its garrisons in Rome during the disastrous Franco-Prussian War to keep the large Prussian Army at bay, the Italians rushed to fill the power gap by taking over the Papal States. Italian unification was completed and shortly afterwards Italy's capital was moved to Rome. Victor Emmanuel, Garibaldi, Cavour, and Mazzini have been referred as Italy's ''Four Fathers of the Fatherland''.