'Violet' (ii) was an Allied undertaking in which the French national telephone network in German-occupied France, with support from the British Special Operations Executive and the US Office of Strategic Services, crippled the telephone and telegram system of the country at the time of 'Overlord' to prevent rapid transmission of reinforcement and movement orders in support of the German forces facing the Allied armies during and after 'Overlord' (6 June 1944).

This was one of the three elements, together with 'Tortue' and 'Vert', created for implementation by the Forces Françaises de l’Intérieur, which had come into existence in March 1944, to slow if not deny the Germans the ability to deliver men and orders into the Normandy area from the rest of occupied France.