Principality of Erfurt

The Principality of Erfurt was a small state in modern Thuringia, Germany, that existed from 1807 to 1814, comprising the modern city of Erfurt and the surrounding land. It was subordinate directly to Napoleon, the Emperor of the French, rather than being a part of the Confederation of the Rhine. After nearly 3 months of siege, the city fell to Prussian, Austrian and Russian forces. Having mainly been Prussian territory before the Napoleonic Wars, most of the lands were restored to Prussia by the Congress of Vienna. Background and establishment In the wake of the French Revolutionary Wars and the Treaty of Lunéville, the Holy Roman Empire underwent a process of substantial territorial reorganisation known as the German mediatization, under which Erfurt, since the 10th century a subject of the Electorate and Archbishopric of Mainz, was transferred to the Kingdom of Prussia, to compensate for territories Prussia lost to France on the Left Bank of the Rhine. Fearing the rise in the power of Napoleon's First French Empire after their defeat of Austria and establishment of the French-sponsored Confederation of the Rhine, Prussia and Russia mobilized for a fresh campaign, and Prussian troops massed in Saxony as a part of the War of the Fourth Coalition. The twin battles of Jena and Auerstedt were fought on 14 October 1806 on the plateau west of the river Saale, between the and the forces of Frederick William III of Prussia. The decisive defeat suffered by the Prussian Army subjugated Prussia to the French Empire until the Sixth Coalition was formed in 1813. After Jena and Auerstedt, a large number of refugees appeared at the Prussian fortress of Erfurt. At first they were refused entrance, but later the gates were opened and soon the city thronged with at least 12,000 demoralized soldiers. Attempts were made by some officers to return the troops to their regiments, but the men refused to cooperate. Joachim Murat, Marshal of France, sent French Colonel into Erfurt under a flag of truce. The Frenchman demanded an immediate surrender, which the Prussian commandant initially refused. Karl August, Duke of Saxe-Weimar and Saxe-Eisenach, waited near Erfurt in the hope that large numbers of troops would join the retreat; when few did so, he withdrew toward Langensalza.