Several of the most famous Anglo-French battles took place during the Hundred Years' War: Crécy, Poitiers, Agincourt, Orléans, Patay, Formigny and Castillon. Major sources of French pride stemmed from their leadership during the war. Bertrand du Guesclin was a brilliant tactician who forced the English out of the lands they had procured at the Treaty of Brétigny, a compromising treaty that most Frenchmen saw as a humiliation. Joan of Arc was another unifying figure who to this day represents a combination of religious fervour and French patriotism to all France. After her inspirational victory at Orléans and what many saw as Joan's martyrdom at the hands of Burgundians and Englishmen, Jean de Dunois eventually forced the English out of all of France except Calais, which was only lost in 1558. Apart from setting national identities, the Hundred Years' War was the root of the traditional rivalry and at times hatred between the two countries. During this era, the English lost their last territories in France, except Calais, which would remain in English hands for another 105 years, though the English monarchs continued to style themselves as Kings of France until 1800.