French admiral, afterward a marshal of France, who served with distinction in the wars of King Louis XIV against the British and the Dutch.

In 1689 he transported French troops to Ireland to aid the deposed Catholic King James II of Great Britain, and he obtained a short-lived advantage by defeating a British fleet off the south coast of Ireland. As vanguard commander in the Battle of Beachy Head (1690), he was chiefly responsible for the French victory over the Dutch. He was absolved of blame for the loss to the British, in Vigo Bay, Spain, of part of a Spanish treasure fleet that he had convoyed from the Western Hemisphere in 1702.