Du Chayla was born in
Marvejols in the
Lozère department in southeast
France. As a young naval officer, he distinguished himself during the
American Revolutionary War, serving under
Admiral d'Estaing. He was captured in 1778, and released two years later. He served under
Admiral de Grasse aboard the
Languedoc and took part in the
Battle of Martinique. Du Chayla also fought at the
Battle of the Chesapeake and at the
Battle of St. Kitts, and was wounded at the
Battle of the Saintes. After the war, Du Chayla was promoted to
Lieutenant de vaisseau, and later to
capitaine de vaisseau, obtaining command of the
Tonnant. During the
French Revolutionary Wars, he took part in the campaigns on the Italian coasts. In 1793, he was relieved from command because of his nobility, but was soon reinstated. He served as aide to the
Minister of the Navy from 1795 to 1797, before being promoted to division commander in 1796, and to
contre-amiral soon later. ==Battle of the Nile, and aftermath==