 During this attack, the Spanish flagship was boarded by the Dutch and during the course of the battle ran aground.The rest of the Spanish fleet fled and Maximilien de Hénin-Liétard and his crew surrendered after the Dutch promised to spare their lives.After this lost battle and the failed Siege of Alkmaar, Alva realized that the struggle to conquer North Holland was lost, and he abandoned Amsterdam and returned to Spain.