After leaving Britain, Radisson found himself unpopular in the royal court. In 1677 he decided to join the navy and to fund Marshal of France, Jean II d'Estrées' expedition in the Franco-Dutch War to conquer the island of Tobago, winning the man's favor. Following his involvement in the war, he borrowed 100 Louis d'or from the Marshall in a failed attempt to pay to bring his wife back from Britain, and subsequently failed to regain a position in the Hudson's Bay Company, as a further result of anti-French prejudice.