Napoleon and the French army invade Russia.
The Russians retreated before his advance because they were outnumbered.
Napoleon had over 600,000 Frenchmen and 400,000 other soldiers ready to fight.
Alexander had 160,000 troops.
Napoleon underestimated the Russian's willingness to sacrifice Moscow.
The Russians burned Moscow to the ground.
Without Moscow Napoleon had no shelter or rations.
Napoleons army could not handle the cold winter of Russia
Napoleon lost over 500,000 soldiers in Russia.