As to the Black Prince, the martial ardour within him is already at fever heat. There is something inexpressibly attractive to him in the prospect of meeting his ancient rival, Du Guesclin, in the field. The constable had good reason for extolling the magnanimity of the prince in the matter of his brother Oliver, taken prisoner in the battle of Poitiers by Thomas of Canterbury--and though ready to engage against each other in battle, their feeling is of friends. In these days of mercenary warfare no shame was felt in passing from one side to the other if the pay was good. “To live by the sword” was a noble profession, and the needy knight or commoner must go where battle leads. From the Black Prince downwards, every English trooper and archer was enthusiastic in the cause of Don Pedro. Even the calm Chandos was infected, if not convinced, in the face of such constant denials, and specious explanations on his part. Like his master Plantagenet he grudged every day that detained him inactive in Guienne until the authority of Edward III. was received. As a preliminary, heralds were at once sent into Castile to summon the English and Gascon knights who had taken service with _Don Henry the Bastard_ (so was the brilliant Caballero designated in these state papers) “to repair to the prince’s standard with all speed,” an order instantly obeyed by Sir Hugh Calverley, Sir Eustace d’Ambrecourt, Walter Hewitt, and the Lords of Devereux and Neville, to the considerable weakening of Don Enrique’s army. At length the long-desired decision came from the council, assembled at the Court of Windsor, 1366, which set forth that it was “noble and honourable, as well as just and advantageous, to assist Don Pedro, King of Castile and Leon, in his legal rights,” and that his Highness Edward Prince of Wales, was authorised to march with the forces he might think fit to effect the same, under the command of Lord John Chandos, High Constable of Aquitaine, Sir Guiscard d’Angoulême, Sir Stephen Coffington the great standard-bearer of St. George, Lord Beauchamp of Abergavenny, Neville, Clayton, Tyrrell, Hastings, Cheney, Boteler, Willoughby, Felton, Loring, the prince’s grand chamberlain and bannister, besides his foreign followers, De Buch, D’Armagnac, D’Albert, and others. CHAPTER XIX The Black Prince Defeats Don Enrique and Reinstates Don Pedro.--Don Enrique Murders Don Pedro.--Death of Don Enrique.