Souvorof had divided his force of 80,000 Russians into two corps, one to operate in Switzerland, the other under his own command, to conduct the campaign in Italy. His great success brought upon him the envy of the Austrian generals, by whom his movements were constantly hampered. He therefore resolved to effect a junction with the forces in Switzerland, who, on the 26th of September, had been defeated at Zurich with a loss of 6,000 men. Souvorof did not know this. He reached the St. Gothard on the 21st and crossed it under unheard-of difficulties. "In this kingdom of terrors," he writes to Paul, "abysses open beside us at every step, like tombs awaiting our arrival. Nights spent among the clouds, thunder that never ceases, rain, fog, the noise of cataracts, the breaking of avalanches, enormous masses of rocks and ice which fall from the heights, torrents which sometimes carry men and horses down the precipices, the St. Gothard, that colossus who sees the mists pass under him,—we have surmounted all, and in these inaccessible spots the enemy has been forced to give way before us. Words fail to describe the horrors we have seen, and in the midst of which Providence has preserved us." "The Russian, inhabitant of the plain, was awestruck by the grandeur of this mountain scenery."

Souvorof brushed the French out of his way until, on the 26th, he arrived at Altdorf with the loss of only 2,000 men. Here he received information of the defeat at Zurich, and saw that he was surrounded on all sides by superior forces. His retreat showed the highest military skill, as well as the man's indomitable energy. Over untrodden mountains, and snow at one place five feet deep, he guided the remains of his army to a lower altitude, and went into winter quarters between the Iler and the Lech.

Souvorof complained bitterly to the czar of the Austrian generals, who had given him ample reason. At about this time Napoleon had returned from his fruitless campaign in Egypt, and at Marengo defeated the Austrians, whereby the results of Souvorof's campaign were lost. Paul was angry at Austria and Great Britain. Napoleon, shrewdly guessed the czar's feelings, released the Russian prisoners, after equipping them anew. Paul satisfied that Napoleon was an enemy of republican institutions, conceived an intense admiration for his military genius, and came to an understanding with him to overthrow British rule in India. The czar at once commenced to prepare its execution. Two armies were formed; one was to march on the Upper Indus by way of Khiva and Bokhara, while the Cossacks under their hetman Denisof would go by Orenburg. He was confident that the gigantic task could be accomplished, and sent daily instructions to the hetman.

Napoleon had a far better idea of the difficulties, but he did not consider the expedition as hopeless. But even if it failed, he would be the winner, because England would be compelled to send most of her navy to India, while Russia would be too fully occupied, to interfere with his projects in Europe. The Cossacks started on their long journey, by crossing the Volga on the floating ice when, on the 24th of March, 1801, Paul was assassinated in his palace.

There was no doubt as to the guilty men, but Paul's son, Alexander, who succeeded him, did not order an investigation. Pahlen, Panine, Zoubof, and others, known as the "men of the 24th of March," were removed from office, but that was their only punishment. Paul's mother had alienated her grandchildren from the father, and Alexander always showed greater affection for Catherine than for Paul. The greatest sufferer was Napoleon, who saw his grand schemes go up in smoke. Alexander reversed his father's policy, both at home and abroad. He came to an understanding with England. Napoleon tried earnestly to secure the new czar's friendship. He wanted a free hand in Europe and in return offered the same privilege in Asia, but Alexander mistrusted the First Consul. The murder of the Duke of Enghien, who, by Napoleon's order, was kidnaped in a neutral territory and shot,—still further alienated the czar.

After Napoleon's coronation as emperor, Alexander entered into an alliance with England, whereby he would receive six million dollars for every 100,000 men Russia placed in the field. The Emperor of Austria and the King of Prussia joined, but the Austrians, whose generals seemed unable to learn by experience, were defeated before the Russian army could reach the Tyrol. Once again the Russians covered themselves with glory by Koutouzof's masterly retreat to the north, and Bagration's heroic self-sacrifice. At Olmutz, in the presence of Alexander, the Russo-Austrian army, 80,000 strong, was attacked by Napoleon with 70,000 men. The Austrians had induced the czar to adopt their plan of battle, and it met with the usual result. Alexander escaped, escorted by his physician, two Cossacks, and a company of the Guards. (Dec. 2., 1805.) Twenty-four days later Alexander concluded peace with France by the Treaty of Presburg.

The growing power of Napoleon induced Alexander to enter into a new coalition with England, Prussia, and Sweden. Russia bore the brunt of the war, after Prussia had been rendered harmless after the battles of Jena and Auerstadt. The Russians withdrew from Prussian Poland; they suddenly left their winter quarters and attacked the French. On the 8th of February, one of the bloodiest battles was fought at Eylau; the French claimed the victory, but it was barren of results.

Napoleon dreaded Russia. He persuaded the Sultan of Turkey and the Shah of Persia to declare war, so as to occupy Alexander elsewhere. The czar, however, was loyal to his allies until, on the 14th of June, his army was almost annihilated at Friedland. This loss compelled him to enter into negotiations. On June 25, 1807, the two emperors met on a raft at Tilsit. Napoleon was prepared to do almost anything that would induce Alexander to cease interfering in Europe. An offensive-defensive alliance was concluded, whereby Napoleon agreed not to oppose the expulsion of the Turk or Russia's conquest of Constantinople. The czar meant to carry out the treaty in letter and in spirit, but he soon saw that Napoleon's ambition was limitless, and that he was playing with his ally. This was evident by the proposed partition of Turkey: nothing came of it. Still he accepted Napoleon's invitation to a conference at Erfurt, where he was received by the French Emperor amid a court composed of sovereigns and princes. A convention was signed on the 12th of October, 1808, whereby Alexander promised Napoleon a free hand, in return for the annexation by Russia of Finland and the Turkish provinces on the Danube.

This led to a war with Great Britain, Sweden, and Austria, not including Turkey and Persia. Russia acquired Finland, when Alexander, after convoking the Diet, guaranteed its constitution, privileges, and university. In 1809, war again broke out between Austria and France. By the terms of the alliance, Russia had agreed to furnish troops, but they showed that they did not relish fighting with the French. There were two engagements; in one of these, the casualties were one Russian killed and two wounded. By an oversight of Napoleon the Poles serving under him were to cooperate with the Russians, and, far from doing so, they often came to blows. The Russian general constantly sent complaints to the czar. Napoleon made a great effort to appease Alexander by assigning to Russia Eastern Gallicia with a population of 400,000. Alexander declined to be represented in the peace negotiations at Vienna. Napoleon's creation of the Grand Dukedom of Warsaw was a constant menace to Russia.

Meanwhile the Russians were uniformly victorious in Turkey; the czar concluded peace only when it was evident that war with France was unavoidable, and that Russia would need every man. It was on this account that he gave easy terms to the hard-pressed Sultan. Russia annexed Bessarabia, part of Roumania, Ismaïl, and Kilia on the Lower Danube.