Battle of Jena–Auerstedt in the context of "Frederick the Great"

The Napoleonic Wars (1803–1815) were a global series of conflicts fought by a fluctuating array of European coalitions against the French First Republic (1803–1804) under the First Consul followed by the First French Empire (1804–1815) under the Emperor of the French, Napoleon Bonaparte. The wars originated in political forces arising from the French Revolution (1789–1799) and from the French Revolutionary Wars (1792–1802) and produced a period of French domination over Continental Europe. The wars are categorised as seven conflicts, five named after the coalitions that fought Napoleon, plus two named for their respective theatres: the War of the Third Coalition, War of the Fourth Coalition, War of the Fifth Coalition, War of the Sixth Coalition, War of the Seventh Coalition, the Peninsular War, and the French invasion of Russia.

The first stage of the war broke out when Britain declared war on France on 18 May 1803. After some minor campaigns, Britain allied with Austria, Russia, and several minor powers to form the Third Coalition in April 1805. Napoleon defeated the allied Russo-Austrian armies in the subsequent war which climaxed in French victories at Ulm and at Austerlitz, leading to the dissolution of the Holy Roman Empire and Austria being forced to make peace by the end of the year. Britain and Russia remained at war with France. Concerned about increasing French power, Prussia joined Britain and Russia in the Fourth Coalition, which resumed war in October 1806. Napoleon defeated the Prussians at Jena-Auerstedt and the Russians at Friedland, bringing an uneasy peace to the continent by July 1807, and again leaving Britain as France's sole major enemy. Britain was unable to dispute French dominance on the continent but obtained hegemony over the seas after a string of victories including Trafalgar. Russia used the interim peace to resolve wars with the Ottomans, Swedes, and Iranians.

The War of the Fourth Coalition (French: Guerre de la Quatrième Coalition) was a war spanning 1806–1807 that saw a multinational coalition fight against Napoleon's French Empire, subsequently being defeated. The main coalition partners were Prussia and Russia with Saxony, Sweden, and Great Britain also contributing. Excluding Prussia, some members of the coalition had previously been fighting France as part of the Third Coalition, and there was no intervening period of general peace. On 9 October 1806, Prussia declared war on France and joined a renewed coalition, fearing the rise in French power after the defeat of Austria and establishment of the French-sponsored Confederation of the Rhine in addition to having learned of French plans to cede Prussian-desired Hanover to Britain in exchange for peace. Prussia and Russia mobilized for a fresh campaign with France, massing troops in Saxony.

Napoleon decisively defeated the Prussians in an expeditious campaign that culminated at the Battle of Jena–Auerstedt on 14 October 1806. French forces under Napoleon occupied Prussia, pursued the remnants of the shattered Prussian Army, and captured Berlin. They then advanced all the way to East Prussia, Poland and the Russian frontier, where they fought an inconclusive battle against the Russians at the Battle of Eylau on 7–8 February 1807. Napoleon's advance on the Russian frontier was briefly checked during the spring as he revitalized his army with fresh supplies. Russian forces were finally crushed by the French at the Battle of Friedland on 14 June 1807, and three days later Russia asked for a truce.

Michel Ney, 1st Prince de la Moskowa, 1st Duke of Elchingen (pronounced [miʃɛl nɛ]; 10 January 1769 – 7 December 1815), was a French military commander and Marshal of the Empire who fought in the French Revolutionary Wars and the Napoleonic Wars.

The son of a cooper from Saarlouis, Ney worked as a civil servant until 1787 when he enlisted in a cavalry regiment, right before the outbreak of French Revolution. Distinguishing himself as a cavalry officer in the War of the First Coalition, he quickly rose through the ranks and, by the Battle of Hohenlinden (1800), he had been promoted to divisional general. On Napoleon's proclamation of the French Empire, Ney was named one of the original 18 Marshals of the Empire. He played an instrumental role during Napoleon's subsequent campaigns, seeing action at Elchingen (1805), Jena (1806) and Eylau (1807). Ney commanded the French rearguard during the disastrous invasion of Russia, for which he was lauded as "the bravest of the brave" by the emperor.

The fall of Berlin took place on 24 October 1806 when the Prussian capital of Berlin was captured by French forces in the aftermath of the Battle of Jena–Auerstedt. Berlin fell 15 days after the beginning of the war. The French Emperor Napoleon entered the city after three days, from which he issued his Berlin Decree implementing his Continental System. Large-scale plundering of Berlin took place.

The Battle of Eylau (also known as the Battle of Preussisch-Eylau) was a bloody and strategically inconclusive battle on 7 and 8 February [O.S. 26 and 27 Jan.] 1807 between Napoleon's Grande Armée and the Imperial Russian Army under the command of General Levin August von Bennigsen near the town of Preussisch Eylau in East Prussia. Late in the battle, the Russians received timely reinforcements from a Prussian division of von L'Estocq. After 1945, the town was renamed Bagrationovsk as part of Kaliningrad Oblast, Russia. The engagement was fought during the War of the Fourth Coalition, part of the Napoleonic Wars.

Napoleon's armies had smashed the army of the Austrian Empire in the Ulm Campaign and the combined Austrian and Russian armies at the Battle of Austerlitz on 2 December 1805. On 14 October 1806, Napoleon crushed the armies of the Kingdom of Prussia at the Battle of Jena–Auerstedt and hunted down the scattered Prussians at Prenzlau, Lübeck, Erfurt, Pasewalk, Stettin, Magdeburg and Hamelin.

Charles William Ferdinand (German: Karl Wilhelm Ferdinand; 9 October 1735 – 10 November 1806) was the ruling prince of Brunswick-Wolfenbüttel, hereditary duke of Brunswick-Lüneburg and a military leader. His titles are usually shortened to Duke of Brunswick in English-language sources.

He succeeded his father as sovereign prince of the Principality of Brunswick-Wolfenbüttel, one of the princely states of the Holy Roman Empire. The duke was a cultured and benevolent despot in the model of his uncle, Frederick the Great, and was married to Princess Augusta, the eldest sister of George III of Great Britain. He was also a recognized master of 18th century warfare, serving as a field marshal in the Prussian Army. He played a notable role in the French Revolutionary Wars by issuing the Brunswick Manifesto. During the Napoleonic Wars, he was mortally wounded by a musket ball at the Battle of Jena–Auerstedt in 1806.

Barthold Georg Niebuhr (27 August 1776 – 2 January 1831) was a Danish–German statesman, banker, and historian who became Germany's leading historian of Ancient Rome and a founding father of modern scholarly historiography. By 1810 Niebuhr was inspiring German patriotism in students at the University of Berlin by his analysis of Roman economy and government. Niebuhr was a leader of the Romantic era and symbol of German national spirit that emerged after the defeat at Jena. But he was also deeply rooted in the classical spirit of the Age of Enlightenment in his intellectual presuppositions, his use of philologic analysis, and his emphasis on both general and particular phenomena in history.