The ringleader of the ring was Rudolph Roessler, the owner of a small publishing firm called Vita Nova. Roessler was approached by two German officers (Lieutenant General Frtiz Thiele, the German Deputy Head of Communications and Rudolph von Gersdorf, (chief of Intelligence Army Group Centre) who were a part of the plot to overthrow Adolph Hitler. They persuaded him to act as a channel for high level military intelligence information, equipping him with radio equipment and an Enigma machine. They also had him designated as a German military station, enabling him to receive their transmissions through normal broadcast channels.
Roessler passed along significant information starting with the details of Operation Barbarossa. Germany had planned to invade the Soviet Union but the Lucy network got the information to Soviet intelligence in May 1941, causing the Soviets to recognize the immense value of the Lucy network. The network continued to funnel high-grade military intelligence to the Soviet regarding invasions or Stalingrad and Caucausus and the German Plans for Operation Zitadelle allowing the Soviets to repel the German offensive on the eastern front and changing the course of the war.
By 1942 Germany had become aware of Rado’s transmissions. They attacked the network’s legitimacy through the the Red Orchestra counter-espoinage program. Eventually, they used military and political pressure on the Swiss government to shut down the Lucy network. Swiss authorities arrested several network participants in October 1942 and the German officials who were supplying the information were arrested after the failed 20 July plot to assassinate Adolph Hitler.
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