Southern Schleswig is the southern half of the former Duchy of Schleswig in Germany on the Jutland Peninsula. The geographical area today covers the large area between the Eider river in the south and the Flensburg Fjord in the north, where it borders Denmark. Northern Schleswig, congruent with the former South Jutland County, forms the southernmost part of Denmark. The area belonged to the Crown of Denmark until Prussia and Austria declared war on Denmark in 1864. Denmark wanted to give away the German-speaking Holsten and set the new border at the small river Ejderen. Prussian chancellor Otto von Bismarck concluded that this justified a war, and even proclaimed it a "holy war". He also turned to the Emperor of Austria, Franz Joseph I of Austria for help. A similar war in 1848 had gone poorly for the Prussians. With Prussia's modern weapons and the help from both the Austrians and General Moltke, the Danish army was destroyed or forced to make a disorderly retreat. And the Prussian-Danish border was moved from the Elbe up in Jutland to the creek Kongeåen.
Helmuth Karl Bernhard Graf von Moltke was a Prussian field marshal. The chief of staff of the Prussian Army for thirty years, he is regarded as the creator of a new, more modern method of directing armies in the field. He commanded troops in Europe and the Middle East, commanding during the Second Schleswig War, Austro-Prussian War and the Franco-Prussian War. He is described as embodying "Prussian military organization and tactical genius." He was fascinated with railways and pioneered their military usage. He is often referred to as Moltke the Elder to distinguish him from his nephew Helmuth von Moltke the Younger, who commanded the German Army at the outbreak of World War I.
Prince Friedrich Karl Nikolaus of Prussia was the son of Prince Charles of Prussia (1801–1883) and his wife, Princess Marie of Saxe-Weimar-Eisenach (1808–1877). Prince Friedrich Karl was a grandson of King Frederick William III of Prussia and a nephew of Frederick William IV and William I.
The First Schleswig War was a military conflict in southern Denmark and northern Germany rooted in the Schleswig-Holstein Question, contesting the issue of who should control the mainly German-speaking Duchies of Schleswig, Holstein and Lauenburg. Ultimately, the Danish side proved victorious with the diplomatic support of the great powers.
The Second Schleswig War also sometimes known as the Dano-Prussian War or Prusso-Danish War was the second military conflict over the Schleswig-Holstein Question of the nineteenth century. The war began on 1 February 1864, when Prussian and Austrian forces crossed the border into Schleswig. Denmark fought the Kingdom of Prussia and the Austrian Empire. Like the First Schleswig War (1848–1852), it was fought for control of the duchies of Schleswig, Holstein and Lauenburg, due to the succession disputes concerning them when the Danish king died without an heir acceptable to the German Confederation. The war started after the passing of the November Constitution of 1863, which integrated the Duchy of Schleswig into the Danish kingdom in violation of the London Protocol.
Friedrich Heinrich Ernst Graf von Wrangel was a Generalfeldmarschall of the Prussian Army.
The Battle of Dybbøl was the key battle of the Second Schleswig War, fought between Denmark and Prussia. The battle was fought on the morning of 18 April 1864, following a siege that began on 2 April. Denmark suffered a severe defeat which – with the Prussian capture of the island of Als – ultimately decided the outcome of the war, forcing Danish cession of the duchies of Schleswig and Holstein.
The Isted Lion, German: Flensburger Löwe or Idstedter Löwe) is a Danish war monument originally intended as a monument of the Danish victory over German-minded Schleswig-Holstein insurgents in the Battle of Isted (Idstedt) on 25 July 1850, during the First Schleswig War which was a civil war within the Danish Realm, although with troops from Prussia supporting the Schleswig-Holstein insurgents. At its time it was the largest battle in Scandinavian history.
The Battle of Als was fought on 29 June 1864 during the Second Schleswig War between Denmark and Prussia. It was the last major engagement of the war, as the Prussians under General Herwarth von Bittenfeld secured the island of Als – occupied by 9,000 Danish troops, including the garrison of Dybbøl which had retreated there – in a night attack masterminded by the Chief of Staff Leonhard Graf von Blumenthal.
Eduard Ernst Friedrich Hannibal Vogel von Fal(c)kenstein was a Prussian General der Infanterie.
The Battle of Fredericia was fought between soldiers of Schleswig-Holstein and Denmark on 6 July 1849 at Fredericia in Denmark. The battle was a part of the First Schleswig War, which was a conflict between Schleswig-Holstein, supported by several German states, and Denmark. The Danes won the battle.
The siege of Kolberg took place from March to 2 July 1807 during the War of the Fourth Coalition, part of the Napoleonic Wars. An army of the First French Empire and several foreign auxiliaries of France besieged the Prussian fortified town of Kolberg, the only remaining Prussian-held fortress in the Prussian province of Pomerania. The siege was not successful and was lifted upon the announcement of the peace of Tilsit.
The Battle of Sankelmark was a minor battle during the Second Schleswig War. It took place on 6 February 1864 between Sankelmark and Oeversee, on the road between Schleswig and Flensburg, during the Danish retreat from Dannevirke.
The Battle of Mysunde on the 2 February 1864 was the first battle between the Prusso-Austrian allied army and the Danish army in the Second Schleswig War. The Prussian vanguard force of 10,000 men attempted to break through and outflank the Danish defenses at Danevirke, but were repulsed by the fortification garrison and two battalions of the Danish army.
The Battle of Kolding was fought between a Prussian army under Eduard von Bonin and the Danish army under Frederik Rubeck Bülow in Eastern Jutland. The Prussians were victorious and the Danish army were forced to retreat towards Vejle and Fredericia.
SMS Preussischer Adler was a paddle steamer originally built in the mid-1840s for use on a packet route between the Kingdom of Prussia and the Russian Empire in the Baltic Sea. She was requisitioned by the Prussian Navy during the First Schleswig War in 1848 and converted into an aviso, the first vessel of the type commissioned by Prussia. During the war, she took part in an inconclusive action with the Danish brig St. Croix, the first naval battle of the Prussian fleet. After the war, she was disarmed and returned to her commercial role, operating uneventfully on the Stettin–St. Petersburg route until 1862, when the expansion of the Prussian Eastern Railway had rendered the maritime route superfluous. The ship was purchased by the Prussian Navy that year and rearmed, once again as an aviso.
The Battle of Königshügel, also known as the Battle of Ober-Selk was a battle in the Second Schleswig War where Austrian Major General Gondrecourt and his infantry brigade succeeded in occupying the area in front of the Dannevirke near Ober-Selk and taking the strategically important town of Königshügel.
Count Leopold Gondrecourt was a Austro-Hungarian general of French origin most notable for his service in the Battle for Königshügel.
Niels Christian Lunding was a Danish officer who was known for ordering the Evacuation of Fredericia of the Second Schleswig War as well as being the brother of Conrad Mathias Lunding and Vilhelm Lunding.
The Battle of Vejle was a battle of the Second Schleswig War that occurred on March 8, 1864, between the Austrian Empire and Denmark on the town of Vejle. The Austrian victory at the battle opened the way for the Evacuation of Fredericia and the Battle of Jasmund as well as solidifying Ludwig von Gablenz's military career.
Prussia 
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Friedrich Graf von Wrangel 