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.
Military history of Sweden
The Thirty Years' War was fought between 1618 and 1648, principally on the territory of today's Germany, and involved most of the major European continental powers, including Sweden. Although it was from the outset a religious conflict between Protestants and Catholics, the rivalry between the Habsburg dynasty and other powers was also a central motive.