The British government began placing pressure on the French Emperor, Napoleon I. Thanks to Pitt's efforts, Britain joined the Third Coalition, an alliance that included Austria, Russia, and Sweden. In October 1805, the British Admiral Horatio Nelson, 1st Viscount Nelson, won a crushing victory in the Battle of Trafalgar, ensuring British naval supremacy for the remainder of the war. At the annual Lord Mayor's Banquet toasting him as "the Saviour of Europe", Pitt responded in a few words that became the most famous speech of his life: