Not far on the east side of this little depression was the Black Prince's position. His front was covered by a hedge with a ditch in front: Baker expressly mentions a _sepes subterfossata_, and it was the usual custom in Poitou to fence in this way. Behind it was a space partly planted with vines, but by no means clear of bushes, on which the English encamped. The hedge was apparently on rather lower ground, for the French knights sent to reconnoitre were able to bring back a pretty accurate report of the position and numbers of the enemy. Somewhere in this hedge was a gap left for carts to reach the upper level, the hedge apparently curving up to it so as to form a sort of funnel-shaped opening. There is now no long hedge anywhere east of the wood of Nouaillé, half a mile to the south-eastwards; but hedges and ditches disappear easily in a fertile soil under continuous cultivation. It is most probable, though it cannot be said to be certainly known, that the Black Prince's hedge ran from very near La Cardinerie towards the hamlet of Les Bordes, and that through the gap passed the road to the Gué de l'Homme. On the morning of Sunday September 18, king John, according to Froissart, sent some knights to reconnoitre the English position, which he proposed to attack at once. On hearing their report, the king, we are told, asked them in what way the attack should be made; and Eustace de Ribeaumont, their chief, advised the king to make all his men-at-arms dismount, except a few who were to charge and break the English archers. According to Baker of Swinbrook the advice was given by a Douglas, who had fought many times against the English, and affirmed that the English always dismounted their men-at-arms, ever since their defeat at Bannockburn. Whoever gave the advice, it was suicidal folly. A little learning is proverbially a dangerous thing; probably the most dangerous form which a little learning can assume is to know a fact, and to draw utterly baseless and absurd inferences from it. Edward II. was not routed at Bannockburn because his men-at-arms fought on horseback, but because they attacked in a confused and tumultuous manner on ground too narrow for their numbers. Edward III. did not win Crecy merely because his men-at-arms fought on foot, but because he had learned, alike from the victory of Falkirk and from the defeat of Bannockburn, how to combine the destroying force of archers with the defensive firmness of spearmen on foot. Moreover the difference between offensive and defensive tactics is fundamental. Horsemen obviously by dismounting lose most of their _momentum_ for attack; as obviously, they cannot in any other way stand firm to sustain a charge. Want of numbers compelled the English, at Crecy and at Poitiers alike, to stand on the defensive: therefore, and therefore only, their men-at-arms abandoned their natural mode of fighting.