Chivalry and Betrayal: The Hundred Years' War
In 1435 Bedford died and sworn enemies Charles VII and Phillip, Duke of Burgundy joined forces to get the English out and with Henry VI reluctance to wage war and to maintain peace by marrying Margaret of Anjou. Charles had no intention of peace and used cannon and sieges to retake France and Normandy culminating in the defeat of the English at the Battle of Castillon in the last English territory of Gascony ending the hundred years war.
Hundred Years' War
Although the Battle of Castillon is considered the last battle of the Hundred Years' War, England and France remained formally at war for another 20 years, but the English were in no position to carry on the war as they faced unrest at home. Following defeat in the Hundred Years' War, English landowners complained vociferously about the financial losses resulting from the loss of their continental holdings; this is often considered a major cause of the Wars of the Roses, that started in 1455.