As he had served as a personal "officier d'ordonnance" to the Emperor at Waterloo, he was dismissed from the army by the Restoration government with the rank of lieutenant. In 1825, he went to Greece, fought in the war of independence and was in charge of the instruction of a cavalry corps in the new Greek army. In 1828, he took part in the Morea expedition of the French army as an interpreter. He was promoted to the rank of captain in 1829.