At the outbreak of World War II, the Italian Navy had 59 destroyers (not including 67 "torpedo boats" that were either downrated WWI-era small destroyers, such as the "Pilo", Sirtori, "La Masa", "Palestro" and "Curtatone" classes, or ships of the "Spica" and "Orsa" classes, comparable in size, armament and use to the Allied destroyer escorts). Twelve additional destroyers were commissioned during the war: five were newly built ships of the Soldati class and seven were captured foreign ships, of which three were Yugoslav ships captured in April 1941 with the Invasion of Yugoslavia, and four were French ships raised and repaired after the scuttling of the French fleet in Toulon in November 1942. The intense service of these ships, especially on the dangerous supply routes between Italy and North Africa, resulted in severe losses: of seventy-one Italian destroyers that served during World War II, forty-tree were sunk during the war against the Allies, between 10 June 1940 and 8 September 1943, and another fifteen were lost following the Armistice of Cassibile and Operation Achse (most of the latter were undergoing maintenance or repairs when the armistice was declared, and were scuttled in harbour to prevent them from falling into German hands). Most of the thirteen destroyers that survived the war were ceded to France and the Soviet Union by order of the Paris Peace Treaty; only five destroyers (the WWI-era "Augusto Riboty", the Navigatori-class "Nicoloso Da Recco" and the more modern "Grecale", "Granatiere" and "Carabiniere") were left to the postwar Marina Militare.