Napoleonic Wars - The Invasion of Russia 1812

The Invasion of Russia 1812

The Treaty of Tilsit in 1807 resulted in the Anglo-Russian War (1807–12). Emperor Alexander I declared war on the United Kingdom after the British attack on Denmark in September 1807. British men-of-war supported the Swedish fleet during the Finnish War and had victories over the Russians in the Gulf of Finland in July 1808 and August 1809. However, the success of the Russian army on the land forced Sweden to sign peace treaties with Russia in 1809 and with France in 1810 and to join the Continental Blockade against Britain. But Franco-Russian relations became progressively worse after 1810, and the Russian war with the UK effectively ended. In April 1812, Britain, Russia and Sweden signed secret agreements directed against Napoleon.

In 1812, at the height of his power, Napoleon invaded Russia with a pan-European Grande Armée, consisting of 650,000 men (270,000 Frenchmen and many soldiers of allies or subject areas). He aimed to compel Emperor Alexander I to remain in the Continental System and to remove the imminent threat of a Russian invasion of Poland. The French forces crossed the Niemen River on 23 June 1812. Russia proclaimed a Patriotic War, while Napoleon proclaimed a Second Polish war. The Poles supplied almost 100,000 men for the invasion-force, but against their expectations, Napoleon avoided any concessions to Poland, having in mind further negotiations with Russia.

The Grande Armée marched through Russia, winning a number of relatively minor engagements and the major Battle of Smolensk on 16–18 August. However, in the same days, a part of the French Army led by Marshal Nicolas Oudinot was stopped in the Battle of Polotsk by the right wing of the Russian Army, under command of General Peter Wittgenstein. This prevented the French march on the Russian capital, Saint Petersburg; the fate of the invasion was to be decided in Moscow, where Napoleon himself led his forces.

Russians used scorched-earth tactics, and harried the Grande Armée with light Cossack cavalry. The Grande Armée did not adjust its operational methods in response. This refusal led to most of the losses of the main column of the Grande Armée, which in one case amounted to 95,000 men, including deserters, in a single week.

At the same time, the main Russian army retreated for almost three months. This constant retreat led to the unpopularity of Field Marshal Michael Andreas Barclay de Tolly and a veteran, Prince Mikhail Kutuzov, was made the new Commander-in-Chief by Tsar Alexander I. Finally, the two armies engaged in the Battle of Borodino on 7 September, in the vicinity of Moscow. The battle was the largest and bloodiest single-day action of the Napoleonic Wars, involving more than 250,000 men and resulting in at least 70,000 casualties. The French captured the main positions on the battlefield, but failed to destroy the Russian army; logistical difficulties meant that French losses were irreplaceable, unlike Russian ones.

Napoleon entered Moscow on 14 September, after the Russian Army retreated yet again. But by then, the Russians had largely evacuated the city and even released criminals from the prisons to inconvenience the French; furthermore, the governor, Count Fyodor Rostopchin, ordered the city to be burnt. Alexander I refused to capitulate, and the peace talks, attempted by Napoleon, failed. In October, with no sign of clear victory in sight, Napoleon began the disastrous Great Retreat from Moscow.

At the Battle of Maloyaroslavets the French tried to reach Kaluga, where they could find food and forage supplies. But the replenished Russian Army blocked the road, and Napoleon was forced to retreat the same way he had come to Moscow, through the heavily ravaged areas along the Smolensk road. In the following weeks, the Grande Armée was dealt a catastrophic blow by the onset of the Russian Winter, the lack of supplies and constant guerilla warfare by Russian peasants and irregular troops.

When the remnants of the Napoleon's army crossed the Berezina River in November, only 27,000 fit soldiers remained, with some 380,000 men dead or missing and 100,000 captured. Napoleon then left his men and returned to Paris, to prepare the defence against the advancing Russians, and the campaign effectively ended on 14 December 1812, when the last enemy troops left Russia. The Russians had lost around 210,000 men, but with their shorter supply lines, they soon replenished their armies.