In 1806, Thomas Bruce, 7th Earl of Elgin, ambassador to the Ottoman Empire from 1799 to 1803 removed the large collection of marble sculptures from the Parthenon, on the Acropolis in Athens and transferred them to the UK.

At the Battle of Jena-Auerstedt on October 14, 1806 – when Napoleon invaded Prussia and defeated the massed Prussian-Saxon army commanded by Karl Wilhelm Ferdinand, Duke of Brunswick – he was captured, one of the 25, 000 prisoners captured that day as the Prussian army disintegrated.

The town was home to the civil engineer and calculating prodigy George Parker Bidder ( 1806 – 1878 ), who is notable for his work on railways over much of the world, as well as the docks of the East End in the Port of London.

In the Capitulation of Erfurt the city, its 12, 000 defenders, and the Petersberg fortress were handed over to the French on 16 October 1806.

At this point, he felt his position as Holy Roman Emperor to be untenable, so on 6 August 1806, he abdicated the throne and declared himself to be Francis I, Emperor of Austria.

From 1438 the Habsburgs, who controlled most of the southeast of the Empire ( more or less modern-day Austria and Slovenia, and Bohemia and Moravia after the death of King Louis II in 1526 ), maintained a constant grip on the position of the Holy Roman Emperor until 1806 ( with the exception of the years between 1742 and 1745 ).

Prussia tried to remain neutral while imposing tight controls on dissent, but with German nationalism sharply on the rise, the small nation blundered by going to war with Napoleon in 1806.

The conspirators ambushed him north of Port-au-Prince at Pont Larnage ( now known as Pont-Rouge ) on October 17, 1806 en route to battle rebels to his regime.

Dundas put a brake on intellectual and social change through his ruthless manipulation of patronage in alliance with Prime Minister William Pitt the Younger, until he lost power in 1806.

He died two years later, on the twentieth day of the ninth month of 1806 ( the lunar calendar date format for October 31 ), aged about fifty-three, in Edo.

He published lectures on the history of ancient sculpture in 1806, and painting in 1811, and edited the three volumes of an archaeological periodical called Amalthea from 1820 to 1825, which included contributions from the most eminent classical archaeologists of the day.

The Corps turned home on March 23, 1806, using canoes, and later by land.

They reached St. Louis on September 23, 1806.

In the course of the war of the Fourth Coalition against Napoleon, troops under Bernadotte occupied the neutral Lübeck after a battle against Blücher on November 6, 1806.

Based on such observations, Proust made statements like this one, in 1806:

The official lyrics, based on a variant from 1806,

* 1806 – Prussia declares war on France.

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.

As well, von Siebold's assistant and later successor, Heinrich Bürger ( 1806 – 1858 ), proved to be indispensable in carrying on von Siebold's work in Japan.

Initially known appropriately as the Achteck ( Octagon ), on 15 September 1814 it was renamed Leipziger Platz after the site of Prussia's final decisive defeat of Napoleon Bonaparte at the Battle of Leipzig, 16 – 19 October 1813, which brought to an end the Wars of Liberation that had been going on since 1806.

After the Louisiana Purchase by the United States in 1803, this indefinite nature of the boundary between the U. S. and Spain led to an agreement on November 6, 1806, negotiated by Gen. James Wilkinson and Lt. Col. Simón de Herrera, to establish a neutral territory on both sides of the river.

With its return in 1806, it had fulfilled Jefferson's hopes by amassing much new data about the topographical features of the country and its natural resources, with details on the flora and fauna, as well as the many Indian tribes of the West with which he hoped to increase trading.

This post later became a fully-fledged colony, the Cape Colony ( 1652 – 1806 ).

* 1806 – Cape Colony becomes a British colony.

* 1806 – The United Kingdom occupies the Cape of Good Hope.

* 1806 – Dutch settlers in Cape Town surrender to the British.

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 ).

With the 1886 discovery of gold in the Transvaal, the resulting gold rush brought thousands of British and other prospectors and settlers from across the globe and over the border from the Cape Colony ( under British control since 1806 ).

When the Dutch Republic, during the Napoleonic Wars, was occupied by the French in 1795, henceforth becoming their vassal and enemy of the British, the United Kingdom invaded and occupied the Cape Colony that same year ; relinquished control of the territory in 1803 ; only to return and reoccupy the Cape on 19 January 1806.

In 1806, the British Navy invaded the Cape of Good Hope on its own, and appointed British land administrators there, who were zealous propagators of the Enlightenment.

In 1806 Britain retook the Cape Colony from the Batavian Republic ; Napoleon abolished the Republic later that year in favour of the Kingdom of Holland, ruled by his brother Louis.

In 1806 Great Britain took over the Cape to prevent the territory's falling under Napoleon's hands and to secure control over the crucial Far Eastern trade routes.

The history of Cape Colony from 1806 to 1870 spans the period of the history of Cape Colony during the Cape Frontier Wars, also called the Kaffir Wars, which lasted from 1811 to 1858.

After a battle in January 1806 on the shores of Table Bay, the Dutch garrison of Cape Castle surrendered to the British under Sir David Baird, and in 1814, the colony was ceded outright by the Netherlands to the British crown.

On his voyage to the East, Martyn happened to be present at the British conquest of the Cape Colony on 8 January 1806.

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.

Between 1802 and 1806 he travelled in southern Africa, becoming the personal physician of the Governor of the Cape of Good Hope.

After co-operating with Sir David Baird in the occupation of the Cape of Good Hope in 1806, he led the attempt on Buenos Aires with his squadron and 1400 soldiers ; but the Spanish colonists, though discontented, were not disposed to accept British rule.

* Cape of Good Hope 1806, Rolica, Vimeira, Corunna, Pyrenees, Nivelle, Nive, Orthes, Toulouse, Peninsula, South Africa 1846-7, 1851-2-3, Alma, Balaklava, Sevastopol, Lucknow, South Africa 1879, Modder River, Paardeberg, South Africa 1899 – 1902.

** Gibraltar 1704-5, Louisberg, Quebec 1759, Belleisle, Martinique 1762, Havannah, St Lucia 1778, Cape of Good Hope 1806, Maida, Monte Video, Rolica.

In 1806 the 1st Battalion arrived in the Cape of Good Hope to undertake garrison duties in the territory captured from the Dutch.

The Noon Gun has been an historic time signal in Cape Town, South Africa since 1806.