'Duce Supremo' ("Supreme Leader") was more formally used by Victor Emmanuel III in 1915, during World War I, referring to his role as the commander in chief of the armed forces. The term was also used by Gabriele d'Annunzio as dictator of the self-proclaimed Italian Regency of Carnaro in 1920, and most significantly by the Fascist dictator Benito Mussolini. The painting 'Il Duce' by Gerardo Dottori represents Mussolini.