The Castilians immediately occupied the vicinity of Najera: the allies encamped at Navarrete. To spare the effusion of Christian blood, Edward sent a letter, by a herald, to the camp of Henry, explaining the causes which had armed the English monarch in defence of an ally and a relation; but offering, at the same time, to mediate between the two parties. His letter, which was addressed, “To the noble and powerful Prince Henry, count of Trastamara,” not to the king of Castile, was courteously received by Henry. In his reply, he dwelt on the cruelties and oppressions of Pedro’s government, whose expulsion he represented as the act of an indignant nation, and expressed his resolution to maintain both that nation’s rights and his own by the sword. The battle which decided the fate of the two kings commenced the following morning, April 3rd, 1367. The war-cry of “Guienne and St. George!” on the one side, and of “Castile and Santiago!” on the other, were soon drowned by the clash of arms, the shouts of the victors, and the groans of the dying. The struggle was for a short time desperate: but who could contend with the victor of Crécy and Poitiers? A fierce charge on the left wing of Henry, by the prince in person, so terrified Don Tello, who commanded a body of cavalry, that he fled from the field; perhaps he was as treacherous as he was cowardly. Henry fought nobly; so also did his antagonist, who, like his celebrated counterpart, Richard III of England, was as brave as he was cruel. But after the flight of Don Tello, the infantry of Castile began to give way; and, after some desperate efforts by Henry to support the contest, resistance was abandoned. The number of slain, on the part of the vanquished, was eight thousand. Many thousands were made prisoners--all but a handful, who accompanied the defeated count into Aragon, whence he escaped into France. Success so splendid is seldom to be found in the annals of history: it at once restored Pedro to the Castilian throne. But the heroic victor met with little gratitude from his faithless ally: as on a former occasion, the states of Biscay were secretly advised not to accept him for their ruler; and it was not without difficulty that he could obtain from Pedro an oath that the money due to his troops should be paid at two instalments--the first in four, the second in twelve months. But what most disgusted the humane conqueror was the eagerness which the restored king showed to shed the blood of the prisoners.[b] The Spanish historian Ayala has drawn a picture of the Englishman’s protest against Spanish ruthlessness. AYALA’S ACCOUNT OF THE QUARREL BETWEEN EDWARD AND PEDRO