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| Date from | Date to | Event | Source |
|---|---|---|---|
| 1747 | He entered the army and joined the regiment of Talleyrand Cavalry. | FWIKI | |
| 27.9.1749 | Garde de la Marine | FWIKI | |
| 11.10.1755 | Enseigne de Vaisseau | FWIKI | |
| 1.3.1763 | Lieutenant de Vaisseau | FWIKI | |
| 13.9.1765 | Chef de Brigade des Gardes de Marine | FWIKI | |
| 1770 | Appointed Chevalier l’Ordre Royal et Militaire de Saint-Louis | ref:631 | |
| 1774 | Appointed Membre du Conseil de la Marine in charge of evaluating a new signaling method proposed by the Chevalier du Pavillon. | FWIKI | |
| 26.10.1776 | 30.4.1779 | Appointed Gouverneur at Réunion | FWIKI |
| 1.5.1779 | 3.7.1785 | Appointed Gouverneur Général at Mascareignes by interim from 01/05/1779 to 30/01/1780 , comfirmed after . | FWIKI |
| 1785 | Appointed Gouverneur Général at Poindichery French India | FWIKI | |
| 4.4.1785 | On April 4, 1785, he left the Mascareignes, embarking on the "Subtil" for Pondicherry; during his absence, Camille-Charles Le Clerc de Fresne replaces him as Gouvernor of Isle de France | FWIKI | |
| 28.11.1787 | 3.1788 | He left the region and returned to France in 1787. He embarked on November 28 in the frigate "Révolution" and arrived in Brest in March 1788. | FWIKI |
| 25.8.1788 | Appointed Commandeur l’Ordre Royal et Militaire de Saint-Louis | FWIKI | |
| 1790 | Chef d'Escadre | ref:631 | |
| 1792 | 11.3.1803 | When the Revolution broke out, he went into exile in England for 9 years. He returned to France in 1801 and died at the Château de Bardou on March 11, 1803. With him the House of Souillac died out. | FWIKI |