Operation Valkyrie
Soldatensender was a Morale Operations grey radio station that broadcast anti-Nazi propaganda hidden in news, music, and entertainment. It quickly became the most popular station in Western Europe. Morale Operations also used it to report news on German military failures, which eroded Nazi morale. After the 1944 coup against Hitler during Operation Valkyrie, Soldatensender broadcast the names of hundreds of Germans in an attempt to cast suspicion on as many Germans as possible. As a result of this the Gestapo arrested and executed roughly 2,500 Germans.