Prince Wilhelm, eldest son of Kaiser Wilhelm II and Augusta Victoria, was born in 1882. As a young man he associated with the group in Germany supporting militarism and imperialism.

On the outbreak of the First World War, Prince Wilhelm was given command of the German 5th Army. Victory in the Ardennes helped his military reputation and he served as a field commander on the Western Front throughout the war.

Wilhelm took part in the German offensive at Verdun in February 1916 and at the Aisne in May 1918. He resigned his commission at the Armistice and joined his father in exile in Holland. Prince Wilhelm died in 1951.