In 1780, Rochambeau was appointed commander of land forces as part of the project code named "Expédition Particulière. He was given the rank of "Lieutenant General in command of some 7,000 French troops and sent to join the "Continental Army, under "George Washington. In the "American Revolutionary War Rochambeau commanded more troops than Washington did. Count "Axel von Fersen the Younger served as Rochambeau's aide-de-camp and interpreter. The small size of the force at his disposal made him initially reluctant to lead the expedition.
He landed at "Newport, Rhode Island, on 10 July, but was held there inactive for a year, due to his reluctance to abandon the French fleet blockaded by the British in "Narragansett Bay. "Brown University, then named the College in the Colony of Rhode Island and Providence Plantations, served as an encampment site for some of Rochambeau's troops, and the College Edifice, now known as "University Hall, was converted into a military hospital. In July 1781, Rochambeau's force left "Rhode Island, marching across "Connecticut to join Washington on the "Hudson River in "Mount Kisco, New York. From July 6 to August 18, 1781, the "Odell farm served as Rochambeau's headquarters. There then followed the "celebrated march of the combined forces, the "siege of Yorktown and the "Battle of the Chesapeake. On 22 September, they combined with "Marquis de Lafayette's troops and forced "Lord Cornwallis to surrender on 19 October. In recognition of his services, the "Congress of the Confederation presented him with two cannons taken from the British. These guns, with which Rochambeau returned to Vendôme, were "requisitioned in 1792.
He was an original member of "The Society of the Cincinnati.
Upon his return to France, Rochambeau was honored by "King "Louis XVI and was made governor of the province of "Picardy. He supported the "French Revolution of 1789, and on 28 December 1791 he and "Nicolas Luckner became the last two generals created "Marshal of France by Louis XVI. When the "French Revolutionary Wars broke out, he commanded the "Armée du Nord for a time in 1792 but resigned after several reversals to the Austrians. He was arrested during the "Reign of Terror in 1793–94 and narrowly escaped the "guillotine. He was subsequently pensioned by "Napoleon and died at "Thoré-la-Rochette during the "Empire.
A "statue of Rochambeau by Ferdinand Hamar was unveiled in "Lafayette Square in Washington, D.C., by President "Theodore Roosevelt on 24 May 1902, as a gift from France to the United States. The ceremony was made the occasion of a great demonstration of friendship between the two nations. France was represented by ambassador "Jules Cambon, Admiral Fournier and General "Henri Brugère, as well as a detachment of sailors and marines from the battleship Gaulois. Representatives of the Lafayette and Rochambeau families also attended. A Rochambeau "fête was held simultaneously in Paris.
In 1934, American "A. Kingsley Macomber donated a statue of General Rochambeau to the city of "Newport, Rhode Island. The sculpture is a replica of a statue in Paris. It was from Newport that General Rochambeau departed with his army to join "General Washington to march on to the "Siege of Yorktown. 
The "French Navy gave his name to the ironclad frigate "Rochambeau.
The "USS Rochambeau was a transport ship that saw service in the "United States Navy during World War II.
On Monday, 30 March 2009, U.S. President Barack Obama signed into law the Omnibus Public Land Management Act, a provision of which is to designate the "Washington-Rochambeau Revolutionary Route as a National Historic Trail.
One of the bridges in the complex of bridges known as the "14th Street Bridge (Potomac River) connecting Washington D.C. with Virginia is named for him.
A mansion on the campus of Brown University is named Rochambeau House and houses the French Department. (Rochambeau and his forces were camped at Brown when in Providence, RI)
Rochambeau's memoirs, Mémoires militaires, historiques et politiques, de Rochambeau were published by "Jean-Charles-Julien Luce de Lancival in 1809. Of the first volume, a part that was translated by M.W.E. Wright into the English language was published in 1838 under the title of Memoirs of the Marshal Count de R. relative to the War of Independence in the United States.
Rochambeau's correspondences during the American campaign were published in H. Doniol's Histoire de la participation de la France en l'établissement des Etats Unis d'Amérique, or History of French Participation in the Establishment of the United States, in 1892; (MLA citation, Doniol, H. Histoire de la participation de la France en l'établissement des Etats Unis d'Amérique, Vol. V. [publisher unknown] Paris: 1892.)
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