Hundred Years' War (1415–53)
The Lancastrian War was the third and final phase of the Anglo-French Hundred Years' War. It lasted from 1415, when King Henry V of England invaded Normandy, to 1453, when the English lost Bordeaux. It followed a long period of peace from the end of the Caroline War in 1389. The phase was named after the House of Lancaster, the ruling house of the Kingdom of England, to which Henry V belonged.
Battle of Gerberoy
In spring 1435 the Hundred Years' War, after a few years of relative calm began to come back into a hot phase. The English armies were operating from northern France and Aquitaine. They also controlled Paris, Saint-Denis and the whole of Normandy. Nevertheless, the situation in the occupied territories for the English during the last decades had become more difficult. Although Joan of Arc was captured in 1430 and executed in 1431, it seemed to be more difficult to rule France and enforce the Treaty of Troyes.