Let’s be blunt: the German army lost World War II on the Eastern Front. For most of the war, 75-80 percent of the Wehrmacht had to be deployed in the East, a preponderance dictated by the sheer size of the front, and 80 percent of German war dead perished there: about four million of the five million German soldiers killed in World War II. https://www.nationalww2museum.org/war/articles/operation-barbarossa
nytimes.com
"Gehlen dies at 77". New York Times. 10 June 1979. Retrieved 22 November 2023.