November 12 – Prince Louis of France besieges Hertford Castle, held by Sir Walter de Godarville.
December 6 – Prince Louis of France takesHertford Castle. He allows the defending knights to leave with their horses and weapons.[5]
LateDecember – Prince Louis of France besieges and takesBerkhamsted Castle. He allows the defending royal garrison to withdraw honourably with their horses and weapons.[5]
Using revenue form theroyal demesne, King Philip II of France is the firstCapetian king to build a French navy actively. In 1215, his fleet could carry a total of 7,000 men.[6]