In 1758, he led a French squadron out of
Toulon, intended to relieve another French squadron which had been sailing to
Louisbourg to provide relief to the defenders there, but had been forced into
Cartagena in neutral Spain. However, Duquesne was attacked by a British force led by
Henry Osborne and two of his ships were captured, including his own flagship. The ultimate result of the action was to deny Louisbourg any chance of relief, and it surrendered later in the year. ==References==