 From there he sailed up to Brittany, where he led his successful attack on the royal fleet in Blavet, although he could not take the fort after a three-week siege.Soubise then returned to Ré with 15 ships and soon occupied the Ile d'Oléron as well, thus giving him command of the Atlantic coast from Nantes to Bordeaux.Through these actions, he was recognized as the head of the reform, and named himself "Admiral of the Protestant Church".