Routiers
The Hundred Years' War, which lasted from 1337 to 1453, was the backdrop to their pillaging. The Hundred Years' War was fought between two royal families over control of the French throne: the Plantagenets from England, and the House of Valois from France. The War, which is divided into three stages - the Edwardian War (1337-1360), the Caroline War (1369-1389), and the Lancastrian War (1415-1429) - saw the development of new tactics and weaponry that revolutionised warfare during that time period.
Truce of Leulinghem
In 1369 the French government repudiated the 1360 Treaty of Brétigny, resuming the Hundred Years' War between the kingdom of France and the kingdom of England and their various allies. The war originated over the King of England's status as both a French duke and also an English king, creating conflicting interests in many of his actions. The French had declared the English duchy in southwestern France forfeit, beginning the war. The English won the first phase, and the treaty granted the English possession of the duchy as a fief independent of France. During the ensuing decade of peace, the French government strengthened and determined to establish control over the duchy. For nearly two decades, the French pursued a military policy of avoiding direct battle with the English armies and wearing them down by attrition. Although the English won a few victories, eventually almost all of their gains from the earlier phases of the war were lost, including all of the Duchy of Aquitaine except for a narrow coastal strip from Bordeaux to the border of Navarre.