The song "Die Gedanken Sind Frei" was used in the TV-movie "Escape of the Bird Men" (1971), about American and British POWs in Germany who helped a scientist escape Nazi Germany by building a glider so that they can fly to Switzerland. It starred Doug McClure as the USAAF major who was insisting in building the glider, and Chuck Connors (The Rifleman, Branded) as Colonel Crawford, USAF, the senior POW officer. The POWs sang "Die Gedanken Sind Frei" just to annoy the German guards. Even Colonel Crawford sang along. I saw that film on TV, and having served as a soldier in the US Army (1967-69)as a PFC,
I really felt moved by the way the POWs sang that song in a military maznner. The song was used as both an opening and closing theme song.