* 1723 – Mathurin Jacques Brisson, French naturalist ( d. 1806 )

* 1806 – Francis II, the last Holy Roman Emperor, abdicates ending the Holy Roman Empire.

* 1806 – Battle of Mišar during the Serbian Revolution begins.

* 1806 – Santiago de Liniers, 1st Count of Buenos Aires re-takes the city of Buenos Aires, Argentina after the first British invasion.

* 1724 – George Stubbs, English painter ( d. 1806 )

* Anton Alexander Graf von Auersperg ( 1806 – 1876 ) – Austrian poet who wrote under the pseudonym of Anastasius Grün.

The Lewis and Clark Expedition spent the winter of 1805 – 1806 at Fort Clatsop, a small log structure south and west of modern day Astoria.

* 1806 – Michael Haydn, Austrian composer ( b. 1737 )

* 1727 – Michel Adanson, French botanist ( d. 1806 )

* William Bernard Ullathorne ( 1806 – 89 )

Following his conquest of most of Western Europe, the first Napoleon made his elder brother Joseph ( 1768 – 1844 ) king first of Naples ( 1806 – 1808 ) and then of Spain ( 1808 – 1813 ), his third brother Louis ( 1778 – 1846 ) king of Holland ( 1806 – 1810 ) ( subsequently forcing his abdication after his failure to subordinate Dutch interests to those of France ) and his youngest brother Jérôme Bonaparte ( 1784 – 1860 ) king of Westphalia, the short-lived realm created from some of the states of northwestern Germany ( 1807 – 1813 ).

* December 26 – 1806 Battles of Pultusk and Golymin.

Rowan saw active service during the Napoleonic Wars, in Sicily in 1806 – 1808, Sweden in 1808, and then in the Peninsular War, fighting at the Battles of Corunna, Ciudad Rodrigo, Badajoz, Buçaco, Fuentes d ' Oñoro, the Coa and Salamanca, and serving as Brigade Major of the Light Brigade from 1809 and as Assistant Adjutant-General of the Light Division from 1811.

Early in 1806, he was given a commission, and as a Second Lieutenant he served in the Jena and Eylau campaigns, winning his promotion to the rank of lieutenant at the Battle of Pultusk.

In the war of 1806 against Napoleon, Barclay took a distinguished part in the Battle of Pultusk ( December 1806 ) and was wounded at the Battle of Eylau ( 7 February 1807 ), where his conduct won him promotion to the rank of lieutenant-general.

In 1806 he was in command of one of the Russian armies operating against Napoleon, when he fought the battle of Pultusk and met the emperor in person in the sanguinary battle of Eylau ( 8 February 1807 ).

The Pultusk Campaign Map shows the positions of the French, Russian, and Prussian forces at the end of December 1806.

Similarly, impressive infantry efforts were seen at Jena-Auerstedt ( 1806 ), Pultusk ( 1806 ), Fuentes de Oñoro ( 1811 ) and first Battle of Krasnoi ( August 14, 1812 ).

Promoted to division general, he later fought at Jena on 14 October 1806 and was wounded at Golymin.

* 1858 – Alexander Andreyevich Ivanov, Russian painter ( b. 1806 )

** May 28, 1812 – Russian Field Marshal Mikhail Kutuzov signs the Treaty of Bucharest, ending the Russo-Turkish War, 1806 – 1812 and making Bessarabia a part of Imperial Russia.

* June 23 – Ivan Kireevsky, Russian literary critic and philosopher ( b. 1806 )

By 1806, Ossetia was under complete Russian control.

In 1812, in the aftermath of the Russo-Turkish War ( 1806 – 1812 ), the eastern part of Moldavia was ceded to the Russian Empire and Chișinău became the capital of the newly annexed gubernia of Bessarabia.

His first three fables, published in a Russian magazine in 1806, were imitations of La Fontaine ; the majority of those in his 1809 collection were likewise adaptations of La Fontaine.

In 1804 through the influence of Prince Adam Czartoryski he entered the Russian diplomatic service, and was employed in 1805 as Russian commissioner with the Anglo-Neapolitan, and in 1806 with the Prussian army.

Shamil was born at a time when the Russian Empire was expanding into the territories of the Ottoman Empire and Persia ( see Russo-Persian War ( 1804-1813 ) and Russo-Turkish War ( 1806 – 1812 )).

Poinsett arrived in the Russian capital of St. Petersburg in November 1806.

During Napoleon's 1806 campaign in Poland during the War of the Fourth Coalition he tried to incite a Polish uprising against the French army and to convince Prince Józef Poniatowski to abandon his French allies and join the cause of the Russian Empire and Prussia.

In 1806, Sultan Selim III, encouraged by the Russian defeat at Austerlitz and advised by the French Empire, deposed the pro-Russian Constantine Ypsilanti as Hospodar of the Principality of Wallachia and Alexander Mourousis as Hospodar of Moldavia, both Ottoman vassal states.

In 1806 the Russian Ambassador to Japan, and RAC director N. P.

* 1806 — Count Nikolai Rezanov, Imperial Ambassador to Japan and director of the Russian American Company, visits the Presidio of San Francisco.

The doctrines of Aleksey Khomyakov, Ivan Kireevsky ( 1806 – 56 ), Konstantin Aksakov ( 1817 – 60 ) and other Slavophiles had a deep impact on Russian culture, including the Russian Revival school of architecture, The Five of Russian composers, the novelist Nikolai Gogol, the poet Fyodor Tyutchev, the lexicographer Vladimir Dahl, and others.

* Alexander Andreyevich Ivanov ( 1806 – 1858 ), Russian painter

* Alexander Ivanov ( 1806 – 1858 ), Russian painter

* July 15-Alexander Andreyevich Ivanov, Russian painter who adhered to Neoclassicism ( b. 1806 )

Despite this, Russian troops under Ivan Ivanovich Michelson and Mikhail Andreyevich Miloradovich entered the two Danubian Principalities ( see Russo-Turkish War ( 1806 – 1812 )).

He returned to Russia in 1806, and began compiling a code of naval signals on the English pattern, which remained in use by the Russian fleet for more than twenty years.

After defeating the Prussian army in the autumn of 1806, Emperor Napoleon entered partitioned Poland to confront the Russian army, which had been preparing to support the Prussians until their sudden defeat.

* 1806 – British forces take Buenos Aires during the first British invasions of the Río de la Plata.

Much of Clausewitz's thinking was based on his experience as a Prussian war planner concerned with how to use popular forces in an insurrectionary struggle against the much-superior French forces which occupied Prussia after 1806 — how, in short, to wage a " Spanish War in Germany.

In the Greater Poland Uprising of 1806, Polish soldiers and civilian volunteers assisted the efforts of Napoleon by driving out Prussian forces from the region.

Buenos Aires was invaded in 1806, and then liberated by forces from Montevideo led by Santiago de Liniers.

During the Napoleonic Wars, a British military expedition landed in the Cape Colony and defeated the defending Dutch forces at the Battle of Blaauwberg ( 1806 ).

After defeating Prussian forces at Battle of Jena-Auerstedt | Jena, the French Army entered Berlin on 27 October 1806

Between 1806 and 1807, British military forces tried to invade the area of the Rio de la Plata, at the command of Home Riggs Popham and William Carr Beresford, and John Whitelocke.

French appeared in Gniezno in November 1806, and following general Jan Henryk Dabrowski's order issued to all town and cities and country property owners to provide recruits for the organizing Polish forces, Gniezno initially provided 60 recruits who participated in the battles of 1806-07.

After defeating Prussian forces at Battle of Jena-Auerstedt | Jena, the French Army entered Berlin on 27 October 1806

Dutch expansion paused for several years during an interregnum of British rule between 1806 and 1816, when the Dutch Republic was occupied by the French forces of Napoleon.

In 1806, the Mamluks defeated the Turkish forces several times, and in June the rival parties concluded a peace treaty by which Muhammad Ali, who had been appointed as governor of Egypt on 26 March 1806, was to be removed and the state authority in Egypt returned to the Mamluks.

The Battle of Halle was fought between French and Prussian forces on 17 October 1806.

Moore took command of the British forces in the Iberian peninsula following the recall of Harry Burrard of Lymington ( 1 June 1755 – 17 October 1813 ), Hew Dalrymple ( 1750 – 1830 ), Governor of Gibraltar from November 1806 to August 1808, and Arthur Wellesley ( 1769 – 1852 ), later Duke of Wellington, who all faced an inquiry over the Convention of Cintra on the French troops ' evacuation from Portugal.

The twin battles of Jena and Auerstedt ( older name: Auerstädt ) were fought on 14 October 1806 on the plateau west of the river Saale in today's Germany, between the forces of Napoleon I of France and Frederick William III of Prussia.

Glogau was captured by French forces after the Battle of Jena in 1806.

Prussian troops began mobilizing, culminating in the October 1806 Battle of Jena-Auerstedt, which was a disaster for Prussia, as the ability of its armed forces to continue the war were effectively wiped out.

Following French Emperor Napoleon I's victory at the Battle of Jena and the ensuing evacuation by Prussia of her Polish provinces, in November 1806 Poniatowski was asked by the Prussian king Frederick William III to assume the governorship of Warsaw, to which he agreed ; he also assumed the command of the city's municipal guard and citizen militia forces organized by local residents.

Following the decision by King Ferdinand to side with the Third Coalition against Napoleon I of France, French forces had invaded the Kingdom of Naples in the spring of 1806, after the British army supposedly defending the kingdom evacuated Italy altogether.

The first time the yellow, blue and red flag was flown by Miranda was in 1806 on the ship Leander when trying to face the Spanish forces off of the coast of Haiti.

Buenos Aires was captured in 1806, and then liberated by Santiago de Liniers with forces from Montevideo.

Janssens had previously served as Governor General of the Cape Colony, and had been forced to capitulate after being defeated by British forces at the Battle of Blaauwberg in 1806.