The summit is easily reached from Frankfurt in approximately 30 minutes via roads from Oberursel, Königstein or by bus from these towns.
He was then held in detention along with Mildred Gillars and Donald S. Day by the Counterintelligence Corps at Camp King, Oberursel, until his conditional release on December 24, 1946.
Both the E.3/15 machine earlier shared with Boelcke, and his own E.13/15 aircraft, both used to secure Immelmann's first five victories between them each had a seven-cylinder 80 horsepower Oberursel U.0 rotary engine for their power.
She was then held by the Counterintelligence Corps at Camp King, Oberursel, along with fellow-collaborators Herbert John Burgman and Donald S. Day until she was conditionally released from custody on December 24, 1946.
Von Orseln hailed from a noble family of vogts (reeves) of the Counts of Falkenstein in Oberursel near Frankfurt.