مستشارية الرايخ
From January 1943 until the end of World War II, as well as during the Battle of Berlin, Flegel served as a nurse for Hitler's entourage. She worked alongside one of Hitler's physicians, Dr. Werner Haase, as a nurse at Humboldt University Hospital and was transferred to the Reich Chancellery in late April 1945. She worked in an emergency casualty station located in the large Reich Chancellery cellar, above the "Vorbunker" and "Führerbunker".