Edward the Black Prince of Cornwall in 1337. He was guardian of the kingdom in his father's absence in 1338, 1340, and 1342. He was created Prince of Wales in 1343 and knighted by his father at La Hogne in 1346. In 1346 Prince Edward commanded the vanguard at the Battle of Crécy, his father intentionally leaving him to win the battle. He took part in Edward III's 1349 Calais expedition. In 1355 he was appointed the king's lieutenant in Gascony, and ordered to lead an army into Aquitaine on a chevauchée, during which he pillaged Avignonet and Castelnaudary, sacked Carcassonne, and plundered Narbonne.
Edward the Black Prince burnt, and that 3,000 persons of all ranks and ages were massacred. However modern scholarship, including the historian Richard Barber writing in 2008 in the "Oxford Dictionary of National Biography", and drawing on a wider range of evidence, places casualties much lower than Froissart did—around 300 garrison soldiers and civilians in total. The prince returned to Cognac; his sickness increased, and he was forced to give up all hope of being able to direct any further operations and to proceed first to Angoulème and then to Bordeaux. The death of his eldest son Edward, which happened at this time, grieved