With large numbers of his troops tied down in Spain, Napoleon decide to invade Russia in 1812 with an Army of 500,000 men and although he defeated the Russians at the battle of Borodino in 1812 and took Moscow he was forced to retreat due to weather, costing him most of his army and marking the beginning of the end. Surrounded by enemies on all sides with his best troops dead Napoleon was forced to abdicate in 1814. As the members of the Fifth coalition decided the fate of Europe, Napoleon staged a daring return to power and tried to reverse the outcome of the war at the battle of Waterloo (18 June 1815). Waterloo was a bloody battle which saw his remaining elite guard destroyed and Napoleon exiled to St Helena from where he was never to return, marking the end of the Napoleonic wars.