By the opening of the year 1812 Napoleon was actively preparing for war on a large scale against his recent ally. From the Austrian court, thanks to his wife, he secured assurances of sympathy and the promise of a guard of 30,000 men to protect the right wing of his Russian invasion. From the trembling Prussian king he wrung, by threats, permission to lead his invaders across Prussian soil and the support of 20,000 troopers for the left of his lines. A huge expedition was then gathered together: some 250,000 French veterans, 150,000 Germans from the Confederation of the Rhine; 80,000 Italians; 60,000 Poles; and detachments of Dutch, Swiss, Danes, and Serbo-Croats; in all, a mighty motley host of more than 600,000 men.
As the year advanced, the Tsar Alexander made counter preparations. He came to a formal understanding with Great Britain. Through British mediation he made peace with the Turks and thus removed an enemy from his flank. And a series of treaties between himself, Great Britain, and Marshal Bernadotte, who was crown-prince of Sweden and tired of Napoleonic domination, guaranteed him in possession of Finland, assured him of a supporting Swedish army, and in return promised Norway as compensation to Sweden. A well-trained Russian army of 400,000 men, under the stubborn, taciturn veteran, General Kutusov, was put in the field.
[Sidenote: Napoleon's Russian Campaign, 1812]
War seemed imminent by April, 1812. After leisurely completing his preparations, Napoleon crossed the Niemen on 24 June, and the invasion of Russia had begun. It was the plan of the French emperor either to smash his enemy in a single great battle and to force an early advantageous treaty, or, advancing slowly, to spend the winter in Lithuania, inciting the people to insurrection, and then in the following summer to march on to Moscow and there in the ancient capital of the tsars to dictate terms of peace. The Russian plan of campaign was quite different. The tsar knew his people, that they were deeply religious and patriotic, that they hated Napoleon bitterly, and that they could be trusted not to revolt. He likewise knew well the character of the 800 miles of comparatively barren steppes that intervened between the Niemen and Moscow, whereon small armies could be beaten and large ones starved. Against the Grande Armée therefore, Alexander directed that no decisive battle be risked, but that the Russian forces, always retreating, should draw their opponents on as far as possible into the interior of the country, where the rigors and privations of a Russian winter could be expected to work greater havoc among them than could powder and bullets.
To his surprise and uneasiness, therefore, Napoleon after crossing the Niemen found the Russians always retreating before his advance. No decisive victory could be won against the elusive foe. Nor was the temper of the Lithuanians such as to encourage him to remain all winter among them. Pushing on into Russia, he captured the great fortress of Smolensk but still failed to crush the main Russian army. Then it was that he made the momentous decision to press on at once to Moscow. On 7 September, General Kutusov turned against him at Borodino and inflicted serious injury upon his army, but a week later he was in possession of Moscow. The battle of Borodino, together with the perpetual harassing of his outposts by the retreating Russians, had already inflicted very severe losses upon Napoleon, but he still had an army of about 100,000 to quarter in Moscow.
The very night of his triumphal entry, the city was set on fire through the carelessness of its own inhabitants,—the bazaar, with its stock of wine, spirits, and chemicals, becoming the prey of the flames. Barracks and foodstuffs were alike destroyed; the inhabitants fled; what was left of the city was pillaged by the French troops as well as by the Russians themselves; and the burning of Moscow became the signal for a general rising of the peasants against the foreigners who had brought such evils in their train. The lack of supplies and the impossibility of wintering in a ruined city, attacked in turn by an enraged peasantry and by detachments of General Kutusov's army, now comfortably ensconced a short distance to the south, compelled Napoleon on 22 October, after an unsuccessful attempt to blow up the Kremlin, or citadel, to evacuate Moscow and to retrace his steps toward the Niemen.
[Sidenote: The Disastrous Retreat from Moscow]
The retreat from Moscow is one of the most horrible episodes in all history. To the exasperating and deadly attacks of the victoriously pursuing Russians on the rear were added the severity of the weather and the barrenness of the country. Steady downpours of rain changed to blinding storms of sleet and snow. Swollen streams, heaps of abandoned baggage, and huge snow-drifts repeatedly blocked the line of march. The gaunt and desolate country, which the army had ravaged and pillaged during the summer's invasion, now grimly mocked the retreating host. It was a land truly inhospitable and dreary beyond description. Exhaustion overcame thousands of troopers, who dropped by the wayside and beneath the snows gave their bodies to enrich the Russian ground. The retreat became a rout and all would have been lost had it not been for the almost superhuman efforts of the valiant rear-guard under Marshal Ney. As it was, a mere remnant of the Grande Armée certainly fewer than 50,000 men—recrossed the Niemen on 13 December, and, in pitiable plight, half-starved and with torn uniforms, took refuge in Germany. Fully half a million lives had been sacrificed upon the fields of Russia to the ambition of one man. Yet in the face of these distressing facts, this one man had the unblushing effrontery and overweening egotism to announce to the afflicted French people that "the emperor has never been in better health!"
[Sidenote: Final Coalition against Napoleon]
For a moment the Tsar Alexander hesitated. Russia at least was freed from the Napoleonic peril. To make peace in this hour of triumph might be of great advantage to his country and would involve no further risks on his part. But his own dreamy longing to pose as the chief figure on the European stage, the deliverer of oppressed nationalities, coupled with the insistent promptings of Baron vom Stein, who was always at his elbow, eventually decided him to complete the overthrow of his rival. Late in December he signed a convention with the Prussian commander, General Yorck, whereby the Prussian army was to cooperate with the Russian, British, and Swedish forces, and, in return, Prussia was to be restored to the position it had enjoyed prior to Jena. On 13 January, 1813, Alexander at the head of the Russian troops crossed the Niemen and proclaimed the liberty of the European peoples. King Frederick William III, amidst the enthusiastic rejoicing of his people, soon confirmed the convention of his general, and in March declared war against Napoleon. The War of Liberation had commenced.