Napoleon retreated to St Dizier after being defeated by Prince Karl Phillip zu Schwarzenberg’s Army of Bohemia at Arcis-sur-Aube on 20-21 March 1814. After some prevarication the Coalition decided that Schwarzenberg’s army and Prince Gebhardt von Blücher’s Army of Silesia should advance on Paris.
Captured dispatches revealed that Napoleon intended to threaten the Coalition lines of supply back to the Rhine. They also indicated that the morale of the French army and it commanders was low, and that the Paris police chief feared that its population might not stay loyal to Napoleon if the enemy approached the capital.
General Ferdinand von Winzengerode was ordered to pursue Napoleon with 8,000 cavalry. He was to trick the Emperor into thinking that both Coalition armies were following him, and to make sure that the Coalition command knew where Napoleon was.
The Army of Bohemia defeated the French corps of Marshals Auguste de Marmont and Édouard Mortier at La Fère Champenoise on 25 March, leaving the road to Paris open. Napoleon’s only chance of holding his capital was to return to it. Dominic Lieven argues that he would have been ‘likely to galvanise and coordinate the defence, and overawe potential traitors in the city’ even if he had rushed there on his own, without bringing reinforcements to the garrison.
Winzengerode was defeated by Napoleon on 26 March, losing 1,500 men and 9 guns. However, Napoleon did not learn of La Fère Champenoise and the threat to Paris until the next day. He began to force march his army towards Paris, but it was too late to get there in time.
Napoleon’s Empress Marie-Louise and their son, the King of Rome, left Paris on 29 March. They were followed by Napoleon’s brother Joseph and much of the government the next day.
By the evening on 29 March the Coalition had 107,000 men outside Paris. Marmont had 12,000 regulars and Mortier 11,000, but many of the 19,000 strong garrison were poorly trained National Guardsmen.
The heights of Montmartre in the north and Romainville in the centre and the stone buildings of the city benefitted the defender. However, little had been done to fortify the city. F. Loraine Petre argues that Napoleon did not want ‘the people to think that he, the conqueror of Europe, had to look to earthworks for the defence of his capital.’
Many of the Coalition troops were not ready to attack in the morning, but General Nikolai Raevsky’s Russian corps beat Marmont’s corps to the village of Romainville in the morning and also took Pantin. They held these against French counter attacks, but the Coalition were unable to make further progress until 3 pm, when all their corps were in position.
The French were forced back to Montmartre and Marmont requested an armistice, which was agreed at 2 am on 31 March. The Coalition had suffered 8,000 casualties in taking Paris.
Napoleon had force marched his army as far as Troyes by 30 March, but it was too exhausted to continue further. He pressed on, initially with just two cavalry squadrons, and then with only five officers in light carriages. Early on 31 March he learnt of the surrender of Paris, and returned to Fontainebleau.
The Emperor had 36,000 troops with him on 1 April, rising to 60,000 two days later. He wanted to fight on, but the Coalition had 145,000 men in Paris, making his position impossible.
The Coalition, which had previously offered to allow Napoleon to keep his throne if he accepted France’s 1792 frontiers, had not yet decided whether or not to restore the Bourbons. Their main objective was to install a regime that would be accepted by the French population and would ensure peace.
One possibility was a regency for Napoleon’s infant son, but this was risky whilst Napoleon was alive. On 1 April the Coalition announced that it would not deal with him or any of his family. The next day the French Senate, ‘stage-managed’ by Charles-Maurice de Talleyrand, Napoleon’s former foreign minister, deposed Napoleon and invited King Louis XVIII to return to France.
Napoleon, informed by his Marshals that he had no choice, abdicated on 4 April, initially in favour of his son. The Coalition refused to accept this, and he renounced the throne for himself and his heirs two days later.
On 16 April the Treaty of Fontainebleau was ratified. Napoleon retained his title of Emperor with sovereignty over the island of Elba, a pension of two million francs per annum and a 600 man guard. He departed for Elba on 28 April.
Lieven argues that giving Napoleon Elba was a ‘serious blunder.’ He notes, however, that Tsar Alexander wanted to be ‘generous to a defeated foe.’ The British were not prepared to allow Napoleon his preference of living in Britain, whilst the terms of Marmont’s surrender prevented ‘any constraint on Napoleon’s freedom.’
As a general Napoleon fought a very skilful military campaign in 1814, but as a statesman he left himself with an impossible task. He rejected several offers of terms that were far better than he could have obtained by fighting on as he was unwilling to accept a peace that he had not won on the battlefield.
France was exhausted and outnumbered, making the outcome of the campaign a foregone conclusion. Napoleon was not strong enough to win a decisive victory and could not have afforded a major defeat. He was beaten in the campaign even without one.
 D. C. B. Lieven, Russia against Napoleon: The Battle for Europe, 1807 to 1814 (London: Penguin, 2010), pp. 518-19.
 Ibid., p. 511.
 F. L. Petre, Napoleon at Bay 1814 (London: John Lane, The Bodley Head, 1914), p. 195.
 Ibid., p. 199.
 Lieven, Russia, p. 515.
 D. Chandler, The Campaigns of Napoleon (London: Weidenfeld & Nicolson, 1966), p. 1001.
 C. J. Esdaile, Napoleon’s Wars: An International History, 1803-1815 (London: Allen Lane, 2007), p. 528.
 Lieven, Russia, pp. 518-19.