On Sept 1st, 1788 he was ordered to Port au Prince. He was  placed in command of the regiment stationed there  arriving  at Port au Prince on Dec 27th, 1788. When the revolution began in France he declared himself its bitter opponent, and took ground against the emancipation of the slaves. With the governor, Comte de Blanchelande, he refused to publish the decrees that were sent from France, disarmed the national guard, and organized a body of royal volunteers under the name of the "Pompons Blancs," which he recruited from among the youth of the wealthy colonial families. He also arrested the members of the colonial committee, dissolved the assembly of St. Marc, and provoked an insurrection by a policy of bloody repression. On 2 March, 1791, the regiments from Artois and Normandy having arrived from France, the soldiers fraternized with the people, and proved to the colonial troops that their colonel had deceived them by means of false orders which he pretended came from the home government. So general was the indignation that was aroused by the discovery of this treachery, that an uprising took place, during which Mauduit was assassinated by his own men. He published "Relation d'un voyage aux Echelles du Levant" (Paris, 1785); and left unfinished a history of French dominion in Santo Domingo, which is deposited in the National library in Paris. See "Eloge historique du Chevalier Mauduit du Plessis," by De la Fosse de Rouville (Senlis, 1818).