This is an interesting story.
The command was given to Admiral Jean Baptiste De Roye de La Rochefoucauld, Duc d’Anville, a young nobleman of thirty-seven who had never been to sea. He owed his appointment to his cousin the minister of the navy.
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The expedition was ill-fated and not a single victory did it obtain; disaster followed disaster, until there were left only scattered fragments of the once proud fleet.
https://fairviewhistoricalsociety.ca/duc-d-anvilles-french-armada/
This link gives a better account of how wrong things can go -
The fleet embarked on Wednesday, June 22, 1746, from the west coast of France under the command of Jean-Baptiste-Louis-Frédéric de la Rochefoucauld de Roye, Duc d’Anville. The fleet consisted of ten ships of the line, seven frigates and sloops, two fire ships, 19 transports, 14 store ships, 11 merchantmen and one hospital ship. On board were 3,500 infantry marines and artillery gunners, as well as 7,300 sailors, which consisted of officers, petty officers and seamen (many of whom were conscripted)—in all about 11,000 men and 25,000 tons of shipping. Nearly six months later, only a few ships and men from this great armada straggled home to French ports. In the words of Nova Scotia author Thomas H. Raddall, “The story of this great armada is one of the most tragic in the history of America.”
https://hmhps.ca/pdf/HMHPS-historical-paper-no-5.pdf
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