The invasion of Russia was the Napoleon´s action that most contributed to his defeat.
In 1812, Napoleon began to encounter the first major defeats of his military career, suffering through a disastrous invasion of Russia, losing Spain to the Duke of Wellington in the Peninsula War, as well as enduring total defeat against an allied force by 1814.
At Waterloo in Belgium, the Duke of Wellington claimed victory over Napoleon Bonaparte, bringing an end to the Napoleonic era of European history.
