After Napoleon's defeat and exile, Curial had his civil and military dignities reinstated. Employed in the army as Inspector General of Infantry, he resumed his seat as a peer at the Luxembourg Palace, where he voted for exile in the trial of Marshal Michel Ney. In 1823 Curial commanded the 5th division deployed to Catalonia as part of the Hundred Thousand Sons of Saint Louis, under the orders of Marshal Bon-Adrien Jeannot de Moncey. He distinguished himself on 9 July at the attack at Molins de Rei, near Barcelona, and several times engaged the garrison of the city in a number of sorties. His favour increased at court, and he was appointed commander of St. Louis on 20 August 1823, and first chamberlain and grand master of the king's wardrobe. In this capacity he attended, on 29 May 1825, the coronation of Charles X. Curial suffered a serious fall during the trip to Reims. His health steadily deteriorated thereafter, forcing him into retirement.