DHC379902 The Battle of Dybboel in the Second Schleswig War, on 18 April 1864, published by Verlag A. Felgner, Berlin, 1864 (colour litho) by German School, (19th century); Private Collection; (add.info.: Denmark suffered a severe defeat against Prussia which decided the war. Following the annexation of the Duchy of Schleswig in November 1863 by the Danish king Christian IX (who was also the Duke of Schleswig), Prussian and Austrian troops invaded Jutland. Peace treaty signed in October turned the duchies of Schleswig and Holstein into an "Austro-Prussian condominium". First steps towards the German Empire); Sammlung Hecht; German, out of copyright.