Prince Emanuele Filiberto, Duke of Aosta (1869 - 1931), member of the House of Savoy, Crown Prince of Spain from 1870 to 1873, and a cousin of Victor Emmanuel III of Italy. He began his career in the Italian Army at Naples, in 1905, as commander. During the First World War the Duke of Aosta commanded the Italian Third Army, which gained the nickname of Armata invitta ("undefeated army"). Following the war he was promoted to the rank of Marshal of Italy by Benito Mussolini in 1926