What Army Group was under the command of Wilhelm, German Crown Prince?
Army Group German Crown Prince: The Army Group German Crown Prince or Army Group B (German: "Heeresgruppe Deutscher Kronprinz") was an Army Group of the German Army, which operated on the Western Front under command of Wilhelm, German Crown Prince, between 1 August 1915 and 11 November 1918 during World War I.
i don't know