 In the summer of 1940, a "radio war" ("guerre des ondes") broke out, marked by oratory battles between the "totalitarian radio stations" (Radio Paris and Radio-Vichy) and the "resistant" BBC and Radio Londres which increased the power of their transmitters and the intensity of slogans, in response to radio jamming and threats to listeners by the Germans.From 1942, Philippe Henriot was the main propagandist of the station.On 26 August 1944, the French Forces of the Interior invaded the recording studio of Radio Nationale in the city of Vichy, which definitively ceased broadcasting.