First Schleswig War

First Schleswig War

Infobox Military Conflict

caption=Danish soldiers return to Copenhagen, 1849", by Otto Bache (1839-1927), 1894
conflict=First Schleswig War
date=March 24 1848-1851
place=Schleswig / Jutland
territory=Schleswig-Holstein re-united with Denmark.
result=London Protocol
combatant2= volunteers
The First Schleswig War ( _de. Schleswig-Holsteinischer Krieg or Three Years' War ( _da. Treårskrigen) was the first round of military conflict in southern Denmark and northern Germany rooted in the Schleswig-Holstein Question, contesting the issue of who should control the Duchies of Schleswig and Holstein. The war, which lasted from 1848–1851, also involved troops from Prussia and Sweden. Ultimately this war was inconclusive and a second conflict erupted in 1864: the Second Schleswig War.

Background and Causes

At the beginning of 1848, Denmark contained the Duchy of Schleswig, Duchy of Holstein and Saxe-Lauenburg, where the majority of the ethnic Germans in Denmark lived. Germans made up a third of the country's population, and the three duchies were behind a half of Denmark's economic power. The Napoleonic Wars, which ended in 1815, had increased Danish and German nationalism. The conflicting aims of Danish and German nationalists was a cause behind the First Schleswig War. Danish nationalists believed that Schleswig, but not Holstein, should be a part of Denmark, as Schleswig contained a large number of Danes, whilst Holstein did not. German nationalists believed that Schleswig, Holstein, and Lauenburg should remain united, and their belief that Schleswig and Holstein should not be separated led to the two duchies being referred to as Schleswig-Holstein. Schleswig was a particular source of contention, as it contained a large number of Danes, Germans and North Frisians. Another cause of the war was the illegal introduction of a royal law in the duchies. When King Christian VIII of Denmark died without children in January 1848, the duchies could have gone under the rule of the House of Oldenburg, which may have resulted in a division of Denmark. As a result, a royal law was put into existence in the duchies that would allow a female relative of Christian VIII to assume control. The implementation of this law was illegal.cite web
last = Schlürmann
first = Jan
authorlink =
coauthors =
title = The Schleswig-Holstein Rebellion
work =
publisher =
date =
url =
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accessdate = 2008-07-17


On March 21, 1848, a crowd of Danish citizens in Copenhagen demonstrated for the creation of a liberal constitution for Denmark. Local government officials and other important people in Kiel, a city in Schleswig-Holstein and a settlement from which the German nationalist party operated, did not know fully what was going on in Copenhagen, and proclaimed a provisional government on March 24. They did this because they thought the King had fallen under the control of the revolutionaries who wanted to separate Schleswig from Holstein. The declaration was considered an act of rebellion by the central Danish government. Schleswig-Holsteinian Prince Frederik of (Schleswig-Holstein-Augustenburg-) Noer took the 5th "Lauenburger" Rifle Corps (Jägerkorps) and some students of Kiel university to take over the fortress of Rendsburg in Schleswig-Holstein. The fortress contained the main armoury of the duchies, and the 14th, 15th, and 16th Infantry Battalions, the 2nd Regiment of Artillery, as well as some military engineers. When Noer's force arrived, the gates to the fortress had been left open for an unknown reason, and walked in and surprised the defenders. After delivering a speech to the defenders, the prince secured the allegiance of the battalions and regiment of artillery to the provisional government. Danish officers who had been serving in the defense of the fortress were allowed to leave for Denmark, but on the assurance that they did not fight against Schleswig-Holstein in the coming war.

Course of the war


Wishing to defeat Denmark before Prussian, Austrian, and German troops arrived to support them, 7 000 Schleswig-Holsteinian soldiers under General Krohn occupied Flensborg on March 31. Over 7 000 Danish troops landed east of the city, and Krohn feared that he would be surrounded, and ordered his forces to withdraw. The Danes were able to reach the Schleswig-Holsteins before they were able to retreat, and the subsequent Battle of Bov on April 9 was a Danish victory. At the battle, the Prince of Noer, the Schleswig-Holsteinian senior commander, did not arrive until 2 hours after the fighting had started, and the Schleswig-Holsteins were more prepared for the withdrawal they had intended to make before they were attacked, than for an engagement.cite web
last = Stenild
first = Jesper
authorlink =
coauthors =
title = Battle of Bov - 9th of April 1848
work =
publisher =
date =
url =
format =
doi =
accessdate = 2008-07-17

*April 12: The diet recognized the provisional government of Schleswig and commissioned Prussia to enforce its decrees. General Wrangel was also ordered to occupy Schleswig.
*April 23: Prussian victory in battle at Schleswig.
*April 23: German victory in battle at Mysunde.
*April 24: Prussian victory in battle at Oeversee.
*May 27: Battle at Sundeved.
*May 28: Battle at Nybøl.
*June 5: Danish victory over Germans in battle at Dybbøl Hill.
*June 7: Battle at Hoptrup.
*June 30: Battle at Bjerning.The Germans had reckoned without the European powers, which were united in opposing any dismemberment of Denmark, even Austria refusing to assist in enforcing the German view. Swedish troops landed to assist the Danes; Tsar Nicholas I of Russia, speaking with authority as head of the senior Gottorp line, pointed out to King Frederick William IV of Prussia the risks of a collision. Great Britain, though the Danes had rejected her mediation, threatened to send her fleet to assist in preserving the status quo. Frederick William ordered Wrangel to withdraw his troops from the duchies, but the general refused, asserting that he was under the command not of the King of Prussia but of the regent of Germany. Wrangel proposed that, at the very least, any treaty concluded should be presented for ratification to the Frankfurt Parliament. The Danes rejected this proposal and negotiations were broken off. Prussia was now confronted on the one side by the German nation urging her clamorously to action, on the other side by the European powers threatening dire consequences should she persist. After painful hesitation, Frederick William chose what seemed the lesser of two evils, and:
*26 August: Prussia signed a convention at Malmö which yielded to practically all the Danish demands. The Holstein estates appealed to the German parliament, which hotly took up their cause, but it was soon clear that the central government had no means of enforcing its views. In the end the convention was ratified at Frankfurt. The convention was essentially nothing more than a truce establishing a temporary "modus vivendi". The main issues, left unsettled, continued to be hotly debated.
*October: At a conference in London, Denmark suggested an arrangement on the basis of a separation of Schleswig from Holstein, which was about to become a member of a new German empire, with Schleswig having a separate constitution under the Danish crown.


*27 January: The London conference result was supported by Great Britain and Russia and accepted by Prussia and the German parliament. The negotiations broke down, however, on the refusal of Denmark to yield the principle of the indissoluble union with the Danish crown.
*23 February: The truce came to an end.
*3 April: The war was renewed. At this point Nicholas I intervened in favour of peace. However, Prussia, conscious of her restored strength and weary of the intractable temper of the Frankfurt parliament, determined to take matters into her own hands.
*3 April: Danish victory over Schleswig-Holstein forces in battle at Adsbøl.
*April 6: Battles at Ullerup and Avnbøl.
*April 13: Danish victory over Saxon forces in battle at Dybbøl.
*April 23: Battle at Kolding.
*May 31: Danes stop Prussian advance through Jutland in cavalry battle at Vejlby.
*June 4: inconclusive Battle of Heligoland (1849), the only naval combat of the war
*July 6: Danish victory in sortie from Fredericia.
*10 July: Another truce was signed. Schleswig, until the peace, was to be administered separately, under a mixed commission; Holstein was to be governed by a vicegerent of the German empire (an arrangement equally offensive to German and Danish sentiment). A settlement seemed as far off as ever. The Danes still clamoured for the principle of succession in the female line and union with Denmark, the Germans for that of succession in the male line and union with Holstein.


*April: Prussia, which by now was war-weary, proposed a definitive peace on the basis of the "status quo ante bellum" and postponement of all questions as to mutual rights. To Palmerston the basis seemed meaningless and the proposed settlement would settle nothing. Nicholas I, openly disgusted with Frederick William's submission to the Frankfurt Parliament, again intervened. To him Duke Christian of Augustenborg was a rebel. Russia had guaranteed Schleswig to the Danish crown by the treaties of 1767 and 1773. As for Holstein, if the King of Denmark could not deal with the rebels there, he himself would intervene as he had done in Hungary. The threat was reinforced by the menace of the European situation. Austria and Prussia were on the verge of war, and the sole hope of preventing Russia from entering such a war on the side of Austria lay in settling the Schleswig-Holstein question in a manner desirable to her. The only alternative, an alliance with the hated Napoleon Bonaparte's nephew, Louis Napoleon, who was already dreaming of acquiring the Rhine frontier for France in return for his aid in establishing German sea-power by the ceding of the duchies, was abhorrent to Frederick William.
*2 July: A treaty of peace between Prussia and Denmark was signed at Berlin. Both parties reserved all their antecedent rights. Denmark was satisfied that the treaty empowered the King of Denmark to restore his authority in Holstein with or without the consent of the German Confederation. Danish troops now marched in to coerce the refractory duchies. While the fighting went on, negotiations among the powers continued.
*July 24–July 25: Danish victory in the Battle of Idstedt.
*July 28: Danish victory in cavalry battle at Jagel.
*August 2: Great Britain, France, Russia and Norway-Sweden signed a protocol, to which Austria subsequently adhered, approving the principle of restoring the integrity of the Danish monarchy.
*September 12: Battle at Missunde.
*October 4: Danish forces resist German siege at Friedrichstadt.
*October 12: Battle at Missunde.
*December 31: Skirmish at Möhlhorst.


*May: The Copenhagen government made an abortive attempt to come to an understanding with the inhabitants of the duchies by convening an assembly of notables at Flensburg.
*6 December 1851: The Copenhagen government announced a project for the future organization of the monarchy on the basis of the equality of its constituent states, with a common ministry.


*28 January: A royal letter announced the institution of a unitary state which, while maintaining the fundamental constitution of Denmark, would increase the parliamentary powers of the estates of the two duchies. This proclamation was approved by Prussia and Austria, and by the German federal diet insofar as it affected Holstein and Lauenburg. The question of the Augustenborg succession made an agreement between the powers impossible.
*31 March: The Duke of Augustenborg resigned his claim in return for a money payment. Further adjustments followed.
*8 May: another London Protocol was signed. The international treaty that became known as the "London Protocol" was the revision of the earlier protocol, which had been ratified on August 2, 1850, by the major Germanic powers of Austria and Prussia. The second, actual London Protocol was recognized by the five major European powers (the Austrian Empire, the Second French Republic, the Kingdom of Prussia, the Russian Empire, and the United Kingdom of Great Britain and Ireland), as well as the two major Baltic Sea powers of Denmark and Sweden.

:The Protocol affirmed the integrity of the Danish federation as a "European necessity and standing principle". Accordingly, the duchies of Schleswig (a Danish fief) and Holstein, and Lauenburg (German fiefs) were joined by personal union with the King of Denmark. For this purpose, the line of succession to the duchies was modified, because Frederick VII of Denmark remained childless and hence a change in dynasty was in order. (The originally conflicting protocols of succession between the duchies and Denmark would have stipulated that, contrary to the treaty, the duchies of Holstein and Lauenburg would have had heads of state other than the King of Denmark.) Further, it was affirmed that the duchies were to remain as independent entities, and that Schleswig would have no greater constitutional affinity to Denmark than Holstein.

This settlement did not resolve the issue, and only fifteen years passed before the Second Schleswig War in 1864 resulted in the incorporation of both duchies into the German Confederation, and later, in 1871, into the German Empire.

After World War I, the Allied Powers organised a local plebiscite resulting in Northern and Central Schleswig on February 10 and 14 March 1920 respectively. Central Schleswig voted to remain German. Northern Schleswig opted for Denmark, to which Northern Schleswig was formally attached a few months later.

ee also

* History of Schleswig-Holstein
* Schleswig-Holstein Question
* Second Schleswig War
* German exonyms for places in Denmark


External links

* [ Guns used at the Battle of Fredericia]
* [ Time-line of Danish history]
* [ Die Schlacht bei Idstedt] de icon
* [ Die Schlacht bei Idstedt im Jahre 1850] de icon
* [ of the Battle of Isted]

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