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.
Hundred Years' War
France was an ally of the Kingdom of Scotland as English kings had for some time tried to subjugate the area. In 1295, a treaty was signed between France and Scotland during the reign of Philip the Fair. Charles IV formally renewed the treaty in 1326, promising Scotland that France would support the Scots if England invaded their country. Similarly, France would have Scotland's support if its own kingdom was attacked. Edward could not succeed in his plans for Scotland if the Scots could count on French support.