Here we come upon a phenomenon that is sufficiently unusual to retain our attention. The highly trained French services, rich with experience acquired in modern wars, past masters in the practice of “sound-wave warfare,” were quick to detect the wave lengths of the broadcasting stations. The programs were then systematically jammed, and the Voice of Fighting Algeria soon became inaudible. A new form of struggle had come into being. Tracts were distributed telling the Algerians to keep tuned in for a period of two or three hours. In the course of a single broadcast a second station, broadcasting over a different wave-length, would relay the first jammed station. The listener, enrolled in the battle of the waves, had to figure out the tactics of the enemy, and in an almost physical way circumvent the strategy of the adversary. Very often only the operator, his ear glued to the receiver, had the unhoped-for opportunity of hearing the Voice.

Frantz Fanon, A Dying Colonialism, loc. 299