From Trafalgar to Friedland
Napoleon, upon ascending to First Consul of France in 1799, had inherited a chaotic republic; he subsequently created a state with stable finances, a strong bureaucracy, and a well-trained army. In 1805, Austria and Russia waged war against France. In response, Napoleon defeated the allied Russo-Austrian army at Austerlitz in December 1805, which is considered his greatest victory. At sea, the British inflicted a severe defeat in the Battle of Trafalgar in October 1805 upon the joint Franco-Spanish navy, securing British control of the seas and preventing the invasion of Britain itself. Prussian concerns about increasing French power led to a resumption of war in October 1806. Napoleon quickly defeated the Prussians, and defeated Russia in June 1807, bringing an uneasy peace to the continent.
Credit to : Kings and Generals