Tuhia he whakamāramatanga mō tēnei wāhanga - I uru atu a Gosselin ki te Royal Navy i te 2 o Akuhata 1778 hei kaiwhaiwhai i a Kapene Philip Boteler i runga i te kaipuke hou. I muri mai ka whakawhitihia ia me Kapene Boteler ki te kaipuke o te raina i te Pipiri 1779. I te 16 o Akuhata i hopukina a Ardent e te ope French-Spanish i te taha o Portsmouth. E toru marama a Gosselin i noho hei herehere pakanga i Alençon. Whai muri i tana tukunga ka uru atu ia ki te kaipuke-o-te-raina, te kaipuke haki o Rear-Admiral Sir Samuel Hood, i te 11 o Oketopa 1780. I runga i te "Barfleur" i uru a Gosselin ki etahi mahi nui o te American Revolution hei waahanga o te ope a Admiral Sir George Rodney, tae atu ki te Pakanga o Fort Royal
, te Pakanga o te Chesapeake, me te Pakanga o Saint Kitts. Whai muri i tenei pakanga ka tukuna a Gosselin ki te frigate i whakahaua e te tuakana o Rear-Admiral Hood, a Kapene Alexander Hood. I roto i te "Champion" ka uru atu a Gosselin ki te Pakanga o Delaware Bay me te Pakanga o Saintes, i reira i tuku ai te rangatira French a François Joseph Paul de Grasse. I tae atu hoki a Gosselin ki te Pakanga o te Mona Passage i reira i hopukina ai e tetahi roopu i raro i te Rear-Admiral Hood tetahi roopu Parani e rere ana, me te "Champion" e hopu ana i tetahi parani Parani. I te Pipiri 1782 i whakawhitihia a Gosselin me Kapene Hood ki te frigate HMS "Aimable", i mahi i a ia tae noa ki te mutunga o te American Revolution me te Tiriti o Paris i te 1783. I hoki ia ki te kainga i te 26 o Pipiri 1783.