to the U.S. May 18: Britain declares war on France May 26: France invades Hanover 1804 March 21: Introduction of the Civil Code (also known as Napoleon Code) May 18: Napoleon proclaimed Emperor of the French by the Senate December 2: Napoleon crowns himself emperor, in the company of the Pope 1805 October 19: Battle of Ulm October 21: Battle of Trafalgar; Admiral Lord Nelson killed October 30: Battle of Caldiero December 2: Battle of Austerlitz 1806 March 30: Napoleon names his brother, Joseph Bonaparte, King of Naples, and appoints other family members to various other posts July 12: Confederation of the Rhine established with Napoleon as Protector. Initially had 16 member states, later others added, including kingdoms of Saxony and Westphalia August 6: Holy Roman Empire abolished September 15: Prussia joins Britain and Russia against Napoleon October 14: Battle of Jena and Battle of Auerstadt November 21: The Berlin Decree (1806), which initiated the Continental System was issued 1807 February 8: Battle of Eylau June 14: Battle of Friedland June 25: Treaty of Tilsit signed between Russia and France October 27: Treaty of Fontainebleau (1807) secretly agreed between Napoleon and Spain to partition Portugal 1808 March 17: Imperial University established May 2: Spanish people rise up against France. Often referred to as Dos de Mayo Uprising May 3: Napoleon's soldiers retaliate for uprising by brutally executing Spanish citizens (famously depicted in Goya's The Third of May 1808) July 7: Joseph crowned King of Spain after Portugal revolts against the Continental System/blockade Napoleon had put in place. Napoleon collected five armies to advance into Portugal and 'bullied' the Spanish royal family into resigning Peninsular War July 16–19: Battle of Bailén 1809 April 19: Battle of Raszyn May 22: Battle of Aspern-Essling; first defeat of Napoleon in 10 years July 5–6: Battle of Wagram; success for Napoleon, Austria loses territory and must enforce the Continental System October 14: Treaty of Schönbrunn signed December 14: Public announcement of Napoleon's divorce from Joséphine 1810 March 11: Napoleon marries Marie Louise of Austria by proxy in Vienna April 1: Napoleon officially marries Marie Louise, Duchess of Parma in Paris 1811 March 20: Napoleon II, Napoleon's son born, styled as the King of Rome 1812 July 22: Battle of Salamanca August 4–6: Battle of Smolensk September 1: Moscow evacuated September 7: Battle of Borodino September 14: Napoleon arrives in Moscow to find the city abandoned