His father, an ardent Socialist, was a blacksmith; his mother was a teacher. Mussolini taught briefly and lived (1902–4) in Switzerland to avoid military service. He achieved national prominence for his opposition to the Libyan War (1911–12) and, as leader of the revolutionary left of the Socialist party, became editor of the Socialist daily Avanti (1913). Soon after World War I began, Mussolini abruptly turned nationalist and joined the pro-Allied interventionists. The Socialist party, which opposed all participation in nationalist wars, expelled him. He then founded his own daily, the Popolo d'Italia, which was subsidized by the French to encourage Italy's entry into the war on the side of the Allies. He joined (1915) the army and attained the rank of corporal.
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