Kammala jumla mai zuwa: A watan Fabrairun 1772, an ba Trémigon mukamin kyaftin, kuma an ba shi umurnin "Alexandre" mai bindiga 64, a cikin rundunar karkashin Orvilliers. A cikin daren 23 zuwa 24, "Alexandre" ya rabu da rundunar jiragen ruwa, don haka ya kasa shiga cikin yakin Ushant a ranar 27 ga Yuli, 1778. An gargadi Trémigon bayan binciken da ya biyo baya. Shekara guda bayan haka, ya shiga cikin
Jirgin ruwa na 1779.