The decisive battle of Barnet furnishes a still more brilliant instance of Edward's skill, and of his quickness to seize the vital point in a campaign. All turned upon his forcing his enemies to action before they could gather their full strength about them. Edward marched his men up to Warwick's position actually after dusk had fallen, a rare accomplishment in those days, and drew up his men as best he could in the dark. When day broke with dense fog he discovered that his army far out-flanked Warwick's left, and was as far out-flanked by Warwick's on his own left. The result seems to have been that the two armies edged continually round each other until their respective positions were reversed,[39] for some of Warwick's cavalry, coming back from the pursuit of Edward's left, found itself on its return not, as it supposed, in rear of Edward's army, but of its own. The cry of treason, always common in the Wars of the Roses, was quickly raised, and in the general confusion the battle was lost to Warwick. None the less the victory was due to Edward's promptness; and indeed the rapidity alike of his decisions and of his marches stamp him as a soldier of no ordinary talent, and as in many respects far in advance of his time. [Sidenote: 1487.] For the rest the Wars of the Roses show unmistakable signs of the changes that were coming over the art of war.[40] A most important point is the ever increasing employment of artillery in the field and the greater value attached to it. Richard, Duke of York, is said to have had a great train of ordnance and so many as three thousand gunners with him at Dartmouth in 1452. Artillerymen were becoming far more common, and as a natural consequence bade fair to command a smaller price in the wage-market. From this time also it may be said that the duel of artillery tends to become the regular preliminary to a general action. Still more significant is the augmented prominence of the common foot-soldier, known from his peculiar weapon as the bill-man, who now begins to supplant the dismounted man-at-arms in the work of infantry, and as a natural consequence restores the latter to his proper station among the cavalry. New weapons again make their appearance in the hands of the foot-soldier. Both Edward and Warwick introduced hired bands of Burgundian hand-gun men, whereby the English became acquainted with the new arm that was to drive out the famous bow. Again, on the field of Stoke there were seen two thousand tall Germans armed with halberd and pike, under the command of one Martin Schwartz, who fought on the losing side, but stood in their ranks till they were cut down to a man.[41] Lastly, the old order of battle in three lines was becoming rapidly obsolete. At Bosworth both armies were drawn up in a single line, with the cavalry on the wings; and the cavalry itself was beginning at the same time to forsake the formation in column for that in line, or as it was called, _en haye_.