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 (1415–53)
The long truces that marked the war also gave Charles time to reorganise his army and government, replacing his feudal levies with a more modern professional army that could put its superior numbers to good use, and centralising the French state. A repetition of Du Guesclin's battle avoidance strategy paid dividends and the French were able to recover town after town.