Though three hundred thousand volunteers mustered in England to meet the coming attack, such a force would have offered but small hindrance to the veterans of the Grand Army, had they once crossed the Channel. But Pitt had already found them work elsewhere. It was not merely the danger of Britain, and the sense that without this counterpoise they would be helpless before the new French Empire, that roused the alarm of the Continental powers. They had been scared by Napoleon's course of aggression since the settlement at Lunéville, and his annexation of Genoa brought their alarm to a head. Pitt's offer of subsidies removed the last obstacle in the way of a league; and Russia, Austria, and Sweden joined in an alliance to wrest Italy and the Low Countries from the grasp of the French Emperor. Napoleon meanwhile swept the sea in vain for a glimpse of the great armament whose assembly in the Channel he had so skilfully planned. Admiral Villeneuve, uniting the Spanish ships with his own squadron from Toulon, drew Nelson in pursuit to the West Indies, and then suddenly returning to Cadiz, hastened to form a junction with the French squadron at Brest and to crush the English fleet in the Channel. But a headlong pursuit brought Nelson up with him ere the manoeuvre was complete, and the two fleets met on the 21st of October 1805 off Cape Trafalgar. "England" ran Nelson's famous signal, "expects every man to do his duty"; and though he fell himself in the hour of victory, twenty French sail had struck their flag ere the day was done. The French and Spanish navies were in fact annihilated. From this hour the supremacy of England at sea remained unquestioned; and the danger of any invasion of England rolled away like a dream.
Her allies were less fortunate. "England has saved herself by her courage," Pitt said in what were destined to be his last public words: "she will save Europe by her example!" But even before the victory of Trafalgar Napoleon had abandoned the dream of invading England to meet the coalition in his rear; and swinging round his forces on the Danube, he forced an Austrian army to capitulation in Ulm three days before his naval defeat. From Ulm he marched on Vienna, and at the close of November he crushed the combined armies of Austria and Russia in the battle of Austerlitz. "Austerlitz," Wilberforce wrote in his diary, "killed Pitt." Though he was still but forty-seven, the hollow voice and wasted frame of the great Minister had long told that death was near; and the blow to his hopes proved fatal. "Roll up that map," he said, pointing to a map of Europe which hung upon the wall; "it will not be wanted these ten years!" Once only he rallied from stupor; and those who bent over him caught a faint murmur of "My country! How I leave my country!" On the twenty-third of January 1806 he breathed his last; and was laid in Westminster Abbey in the grave of Chatham. "What grave," exclaimed Lord Wellesley, "contains such a father and such a son! What sepulchre embosoms the remains of so much human excellence and glory!" So great was felt to be the loss that nothing but the union of parties, which Pitt had in vain desired during his lifetime, could fill up the gap left by his death. In the new ministry Fox, with the small body of popular Whigs who were bent on peace and internal reform, united with the aristocratic Whigs under Lord Grenville and with the Tories under Lord Sidmouth. All home questions, in fact, were subordinated to the need of saving Europe from the ambition of France, and in the resolve to save Europe Fox was as resolute as Pitt himself. His hopes of peace indeed were stronger; but they were foiled by the evasive answer which Napoleon gave to his overtures, and by a new war which he undertook against Prussia, the one power which seemed able to resist his arms. On the 14th of October 1806 a decisive victory at Jena laid North Germany at the Emperor's feet. From Berlin Napoleon marched into the heart of Poland to bring to terms the last opponent now left him on the Continent; and though checked in the winter by the stubborn defence of the Russian forces on the field of Eylau, in the summer of 1807 a decisive victory at Friedland brought the Czar to consent to the Peace of Tilsit.