the opposition of Bertránd du Guesclin and the rest of his field commanders. Battle According to Chandos Herald, p. 38, the Black Prince troops marched from Navarrete to Nájera taking a roundabout way at night and with the first lights of dawn quietly surprised from behind a hill the army of Henry (who were looking towards Navarrete in the east) from the northeast. The vanguard of Henry directed by du Guesclin maneuvered quickly to confront the enemy, but in the confusion and fear other lines were broken and some Castilian horsemen defected to the enemy followed by a larger group of infantry. This urged du Guesclin to abandon the defensive advantage and to charge with the vanguard -composed of the best Castilian troops and the French free companies - to prevent the situation from worsening. The charge forced the English companies of the vanguard of the Black Prince led by the Duke of Lancaster and John Chandos to go back. They were so close that both sides dropped their spears and began using swords, axes, and daggers. Meanwhile, the elite mercenary Gascon companies who were in the right and left wings started to flank the vanguard led by du Guesclin. The Castilian light cavalry of Don Tello approached the opposite wing of the enemy to prevent the flanking at the forefront of du Guesclin but had to suffer terrible losses because of the rain of arrows of the English archers as they approached because they did not have the adequate protections and were forced to flee. Henry himself tried to succor the vanguard charging against the Gascon mercenaries several times from a side with similar results as the horses were easily killed by the English archers and fighting on foot was not an option because the Castilian cavalry considered it a humiliation. Once the elite Gascon mercenaries flanked the vanguard of Henry's army commanded by du Guesclin, it was quickly crushed and most of the main body that did not even participate in the battle fled precipitately toward the bridge of Najera as they were being attacked from two fronts, ignoring the harangues of Henry. The Aragonese cavalry of Jaime IV of Majorca chased and killed most of them, as they got trapped in their retreat by the great river and the narrow bridge. Henry's army had to suffer the vast majority of their losses, which must have been a