Police navigation. He was appointed Admiral in 1825, and raised his pennant in his flagship Sirène. In September 1827 the French government tasked him with the enforcement of the joint resolution by France, Russia, and England, who had united to wrest Greece from the Turkish rule. He commanded the French fleet at the Battle of Navarino on 20 October 1827, which action earned him the Cross of the Order of the Bath, the Order of St. Alexander Nevsky, and promotion to Vice-Admiral. An obelisk-shaped memorial dedicated to the victory of the Allied fleets and their three admirals, the French admiral Henri de Rigny, the British admiral Edward Codrington, and the Russian admiral Lodewijk van Heiden was later erected on the central square of Pylos. The monument was the work of the sculptor Thomas Thomopoulos (1873–1937) and its unveiling took place in 1930, although it was completed in 1933. Return in France Back in France after the evacuation of the Morea, which he chaired, the Admiral was appointed maritime prefect of Toulon in 1829. In 1829, king Charles X awarded him the title of Count of Rigny, but he refused until 8 August that year, the portfolio of the Navy in the Polignac ministry. Admiral Count Rigny went into the Levant to resume command of the fleet. Returning to Toulon for health reasons, in September 1830 he was appointed to the Board of Admiralty, and received the decoration of Grand Officier of the Legion of Honor. Called in 1831 to the Chamber of Deputies by a double election, Admiral Rigny received, on 3 March that year, king Louis-Philippe, the portfolio of the navy. Assigned on 4 April 1834, the Department of Foreign Affairs, he started that administration of a new activity. On 12 March 1835 his health became increasingly unsteady, forcing him to resign his ministerial duties, but in August, he accepted a short mission to Naples. He was barely back in late October, when he felt the first attacks of which he succumbed on the night of 6 to 7 November 1835 at the age of 52 years. After his death, his widow gave birth to a daughter, Amelia Marie Gaultier Rigny, born on 7 February 1868. She married Baron Verneaux and died on 6 July 1868 at the Chateau de Ris Ris-Orangis. The Countess of Rigny, his mother also died at the Chateau de Ris on 13 November 1875.