In February 1942, a force of British paratroopers dropped into occupied France at night with one target: a German Würzburg radar station perched on the cliffs above the village of Bruneval. This episode of Secrets of World War II reconstructs the raid through archival footage, maps, and historian interviews, tracing how physicist R.V. Jones convinced Allied command that the risk of a ground assault was worth it, since aerial photographs alone could not reveal how the radar worked. The operation required not just seizing the station but stripping it down under fire and hauling components to a beach for evacuation by sea, all while German troops closed in. The film sets the raid inside the wider Radar War, the largely hidden contest between British and German scientists to detect bombers and jam each other's technology. It lays out the planning, the intelligence gambles, and the outcome, arguing this obscure commando raid changed the course of the air war over Britain.