Julien Marie Cosmao-Kerjulien (Châteaulin, Finistère, 27 November 1761 – Brest, 17 February 1825) was a French Navy officer, admiral, best remembered for his role in the Battle of Trafalgar. Career Early career Completing his studies in Châteaulin, young Cosmao-Kerjulien joined the French Royal Navy in 1776, against his parents' will. He served in the Aigrette in the Caraibs. Back to Brest in 1778, he served on the Oiseau with Corentin de Leissegues. In September, after the beginning of the American Revolutionary War, he served on the Nymphe, taking part in two battles against English privateers, near Bordeaux and Belle-Isle. Between January 1779 and April 1781, he served in Guyana aboard the brig Hirondelle, fighting two more English privateers and capturing two East Indiamen. He was promoted to Lieutenant of an auxiliary frigate in September 1781. He served successively aboard the Pégase (February 1782) and the Protecteur (March) before taking command of the Fluyt Fidèle in Terre Neuve from May 1783 to April 1784. In January 1785 he served on the Lourde, on the Vigilante on October and the Dorade in April 1786. He was made a sub-lieutenant on a ship of the line in March 1786. In September 1787, he was given command of the brig Vaneau, and of the Boulonnaise for November 1787 to March 1790. From October 1790 to January 1791, he was first officer aboard the Précieuse. From February 1791, he served aboard the Orion of the squadron of Laurent Jean François Truguet in Toulon. He was made ship of the line full lieutenant in January 1792, and received command of the corvette Sincère in April. He took part in the landing at Cagliari in January 1793. Captain In the context of the lack of qualified officers due to the Revolution, he was made Capitaine de Vaisseau in April 1793, serving aboard the , the Centaure and the Duguay-Trouin, under Rear-Admiral Trogoff de Kerlessy. In December 1794 he was transferred to the squadron commanded by Admiral Pierre Martin, where he commanded the 80-gun ship of the line . On 10 June 1795, he captured the English frigate Alceste, and took part in the Battle of Cape Noli in March 1795 (the French and the English both lost two ships of the line) and of Cape Frejus (17 French ships of the line against 23 English; the French lost the 74-gun Alcide). In June 1797, he was made