French general in the Revolutionary and Napoleonic wars.

Vandamme enlisted in the army in 1786, served in Martinique in 1788, and on returning to France entered into the Revolutionary movement, raising a company of light infantry. He was promoted and eventually made general of brigade, serving in the Low Countries (1794), on the Rhine (1795), and in Germany (1796). In 1799 he was promoted to general of division and served in Holland, Germany, and Switzerland. He was renowned for his tenacity and fearlessness as a fighting general as well as for his frank, rough manners and plundering and dissolute life, but he was a devoted servant of Napoleon. In 1805, for his leadership at the Battle of Austerlitz, he was given the Grand Eagle of the Legion of Honour, and in 1806–07 he commanded a small corps of the Grande Armée. In 1808 he was made Count d'Unebourg. In 1809 he served in the Eckmühl campaign, but in 1812, while commanding the Westphalian contingent, he quarreled with King Jérôme Bonaparte and returned to France.

He returned to the army in 1813, but his corps, sent against the line of retreat of the Allies at the Battle of Dresden, surrendered at Kulm. At the end of the war he was forbidden to enter Paris. When Napoleon returned from exile in Elba, Vandamme joined him and was made a peer of France and placed at the head of the III Corps in the army of the north. After the Battle of Waterloo he brought back his corps in good order to Paris and thence to the Loire River. The Restoration first imprisoned and then exiled him. He went to the United States but returned in 1820 to his native village.