Henri wrested several important places from the Protestants and was present at the sieges of Montauban and Montpellier. On the renewal of the civil war in 1625, the fleet sent from Holland to the aid of the French king was placed under his command. In 1625, Henri defeated the French Protestant fleet under Soubise and seized the islands of Ré and Oleron, but the jealousy of Cardinal Richelieu deprived him of the means of following up these advantages.