In 1911, Giolitti's government sent forces to occupy Libya. While the success of the Libyan War improved the status of the nationalists, it did not help Giolitti's administration as a whole. The government attempted to discourage criticism by speaking about Italy's strategic achievements and inventiveness of their military in the war: Italy was the first country to use the airship for military purposes and undertook aerial bombing on the Ottoman forces. The war radicalized the Italian Socialist Party: anti-war revolutionaries led by future-Fascist dictator Benito Mussolini called for violence to bring down the government. Giolitti returned as Prime Minister only briefly in 1920, but the era of liberalism was effectively over in Italy.