Himmler fathered two children with her: a son, Helge (born 1942) and a daughter, Nanette Dorothea (born 1944 at Berchtesgaden). Margarete, by then living in the town of Gmund am Tegernsee in Bavaria with her daughter, learned of the relationship sometime in 1941. Margarete and Himmler were already separated, and she decided to tolerate the relationship for the sake of her daughter. Second World War Once World War II began, Himmler helped operate a military hospital affiliated with the German Red Cross. By December 1939, she was supervising the Red Cross hospitals in Military District III (Berlin-Brandenburg). In this position, she led missions into the territories and countries occupied by the German Wehrmacht. In March 1940, Margarete recorded a business trip to German-occupied Poland, so she was certainly a witness to events there. In her journals, written while serving, Himmler wrote, "Then I was in Posen, Łódź and Warsaw. This Jewish rabble, Polacks, most of them don't look like human beings and the dirt is indescribable. It's an incredible job trying to create order there." For her efforts, Himmler reached the rank of colonel in the German Red Cross. In February 1945, in writing to Gebhard Himmler, Margarete said of Heinrich, "How wonderful that he has been called to great tasks and is equal to them. The whole of Germany is looking to him." Heinrich Himmler was close to his first daughter, Gudrun, whom he nicknamed Püppi ("dolly"); he phoned her every few days and visited as often as he could. Hedwig and Margarete both remained loyal to Himmler. Margarete and Heinrich Himmler last saw one another in April 1945, sharing time together with Gudrun at their Gmund residence. Post-war In 1945, Margarete and Gudrun left Gmund as Allied troops advanced into the area. After the invasion of Bolzano, Italy, by the U.S. Army in May 1945, Margarete and Gudrun were arrested. They were held in various internment camps in Italy, France, and Germany. During her internment, Margarete was interrogated, but it became clear that she was not informed of the official business of her husband, and was described as having a "small-town mentality" which persisted throughout her questioning. In September 1945, Margarete Himmler was again interrogated, but this time it was during the Nuremberg trials. Margarete and Gudrun were then detained at the Flak-Kaserne Ludwigsburg internment camp. Since they were not accused, she and Gudrun were released in November