The uniforms of the Italian Armed Forces, at first, had symbolic meanings and later on, became more function and grade-based. During Spedizione dei Mille (an event during the war for the Italian Unification, nationally called Risorgimento), where Giuseppe Garibaldi's volunteer troops unofficially helped the King of Savoy to conquer the Kingdom of the Two Sicilies, all of the troops wore red shirts, following the example of Garibaldi's Italian Legion that had fought in the Guerra Grande in South America. This earned the volunteer troops the nickname: the Camicie rosse. The first historical records of the actual Italian military uniform are dated back to the Statute conceded by the King (called Statuto Albertino) of the Royal Italian Army () in 1861, the year of Italian Unification. The soldiers of the Royal Army dressed in green coloured uniforms with black boots and helmets. The black uniforms of Mussolini's militia, the Camicie Nere, is another symbolic army uniform in Italian history. Il Duce based these black uniforms on the uniforms of the Arditi, a special unit of the Italian Royal Army that fought in the First World War. During the World Wars, uniforms were prepared and manufactured in military factories. In 2000, the voluntary military service for women was started and female uniforms now represent 7% of all Italian military uniforms.