During the trial of Moreau, in 1804, Grouchy stood by the side of his leader, and gave him contieual proofs of esteem and friendship. At the battle of Zedenick, Grouchy, at the head of his dragoons, routed the Prussian horse, pursued the fugitives for nine miles, and utterly destroyed the famous regiment of the Queen of Prussia. After the combat of Peens.btu, October 27, 1805, he pursued the enemy into the town, and compelled several battalions to ground their arms. The dismay produced by this exploit, obliged the prince of Hohenlohe to sign a capitulation by which 16,000 men, 61 pieces of artillery, and great stores of ammunition were given up to the French. General Grouchy shortly after, meeting the Prussians near Lubeck, drove them through the town, and well nigh captured Blucher. In the heat of the battle of Friedland, June 14, 1807, be was again grievously wounded, on which occasion his conduct was observed by the emperor, who gave him the grand cordon of the legion of honour. Thronghout the Russian campaign, in 1812, his courage and intrepidity were con spicuous, and when Napoleon formed his sacred battalion, con sisting of none but /officers, whose duty was to watch over him, the command of this chosen band was given to General Grouchy. This was, perhaps, the greatest act of real confidence over showu by Napoleon to a general officer; yet, in 1813, the Emperor refused Grouchy's application for the command of a corps, and for n time he abandoned the service. But the following year, when France was invaded, he offered his services, and Napoleon gave him the command of his cavalry. His name now appeared in almost every battle, at Brienne, January 26, 1814, at La RothRev, Febuary 1, and at Vauchamps, February 14. His bravery and skill, at this last battle,
rang through all France; the anger of Napoleon, which had lasted ten years, gave way before it, and Grouchy was created a Marshal.
After the battle of Ligny, Juno 16, 1815, Marshal Grouchy was commissioned to pursue the retreating army of Blucher with a force of 34,000 cavalry, and 100 pieces of cannon. In consequence of these orders, he found himself posted at Wavre, and was engaged in action against the Pruseiau general Thielemann, whilst Napoleon was fighting at Waterloo, on the 18th. The marshal heard the report of artillery, and was strongly urged by his lieutenantsgenerals to march towards the point whence it proceeded ; but he declared himself bound to obey the orders he had received from the emperor on the 17th. Fatal as the battle of Waterloo proved to the French arms, nothing was publicly said at that period against Grouchy's conduct, nor for three years after. After the second abdication of Napoleon, the Provisional government appointed the marshal to the united command of all the corps of the Grand army; bat the entire muster only amounted to 45,000 men.
Banished from France, after the return of Louis XVIII., he with drew to the United States, where ho was living in 1818, when the narrative of the battle of Waterloo, dictated to General Gourgaud, at St. Helena, was published. In this account a charge of treachery was made for the first time against him. Grouchy returned to France, in 1819. He was reinstated in all his titles and honours in 1831, by Louis Philippe, and died at SainteEtienne, May 29, 1847, having been sixty-seven years in the Freuch armies.