 A joint English and Jersey force then marched through the night to Mont Orgueil and began a siege of the castle.This lasted 19 weeks, but finally the garrison, which could not be supplied from the sea because of the presence of Harliston's ships, surrendered and returned the fortress and the island to English hands.Upon liberation, the people of Jersey chose Harliston to be their captain-general, but he shortly went back to England.