In the war, there were four major battles. la Tour attacked d'Aulnay at Port Royal in 1640. In response to the attack, D'Aulnay sailed out of Port Royal to establish a five-month blockade of La Tour's fort at Saint John, which La Tour eventually defeated (1643). La Tour attacked d'Aulnay again at Port Royal in 1643. d'Aulnay and Port Royal ultimately won the war against La Tour with the 1645 siege of Saint John. After d'Aulnay died (1650), La Tour re-established himself in Acadia.