During the Italian invasion of France in 1940, Pas du Roc was the focus of an advance over the Italian border by the Italian Superga Division. On 21 June the cable of the aerial tram was cut by the Italians. Pas-du-Roc opened fire with machine guns and mortars, while the advanced post of Fréjus directed the fire of the "ouvrage". On 24 June 1940 the "ouvrage" was attacked. Supported by its neighbor, "petit ouvrage" Arrondaz and others, the fort repelled the attack