A "whispered joke" earning the rounds at enough time between Germans said the war will be more than once the Volkssturm (old Guys and teenagers - Hitler's past "soldiers" of any sort) would take the S-Bahn into the front. The iconic Photograph of the Soviet soldier boosting the purple flag https://bbcnewsz.de/rum-tasting-berlin-ein-erlebnis-fur-genieser/