1848-51 1st Schleswig War
The First Schleswig War was the first round of military conflict in southern Denmark and northern Germany, contesting the issue of who should control the Duchies of Schleswig and Holstein. The war, which lasted from 1848 to 1851, also involved troops from Prussia and Sweden. Ultimately, under international pressure, the Prussians had to withdraw their forces. As a result, the war ended in a Danish victory over the rebels but a second conflict, the Second Schleswig War, erupted in 1864.