Parma marched to its relief, and, under cover of a thick fog, succeeded in getting close at hand before it was known that he was near. Then the English knights and volunteers, 200 in number, mounted in hot haste and charged a great Spanish column of 5000 horse and foot. They were led by Sir William Russell, under whom were Lord Essex, North, Audley, and Willoughby, behind the last of whom rode Francis Vere. For two hours this little band of horse fought desperately in the midst of the Spanish cavalry, and forced them at last to fall back, but were themselves obliged to retreat when the Spanish infantry came up and opened fire upon them. The English loss was 34 killed and wounded, while 250 of the Spaniards were slain, and three of their colours captured. Among the wounded on the English side was the very noble knight Sir Philip Sidney, who was shot by a musket ball, and died three weeks afterwards. The successes of the English during these two years were counterbalanced by the cowardly surrender of Grave by its governor, and by the treachery of Sir William Stanley, governor of Deventer, and of Roland Yorke, who commanded the garrisons of the two forts known as the Zutphen Sconces. Both these officers turned traitors and delivered up the posts they commanded to the Spaniards. Their conduct not only caused great material loss to the allies, but it gave rise to much bad feeling between the English and Dutch, the latter complaining that they received but half hearted assistance from the English. It was not surprising, however, that Leicester was unable to effect more with the little force under his command, for it was necessary not only to raise soldiers, but to invent regulations and discipline. The Spanish system was adopted, and this, the first English regular army, was trained and appointed precisely upon the system of the foe with whom they were fighting. It was no easy task to convert a body of brave knights and gentlemen and sturdy countrymen into regular troops, and to give them the advantages conferred by discipline and order. But the work was rendered the less difficult by the admixture of the volunteers who had been bravely fighting for ten years under Morgan, Rowland Williams, John Norris, and others. These had had a similar experience on their first arrival in Holland. Several times in their early encounters with the Spaniards the undisciplined young troops had behaved badly; but they had gained experience from their reverses, and had proved themselves fully capable of standing in line even against the splendid pikemen of Spain.