1864
1864 - The Loss of Schleswig-Holstein
In 1864, Denmark lost the Second Schleswig War to Prussia and Austria, losing the duchies of Schleswig, Holstein, and Lauenburg - about a third of its territory.
Quick Answer
In 1864, Denmark lost the war against Prussia and Austria. The Battle of Dybboel on April 18 became a national symbol. Denmark lost Schleswig, Holstein, and Lauenburg — about a third of its territory.
What Happened in 1864?
Importantwar
The Second Schleswig War breaks out
Importantwar
The Battle of Dybboel on April 18
Importantpolitics
Denmark loses Schleswig, Holstein, and Lauenburg
Frequently Asked Questions
Common questions about this year in Danish history.