The army was divided into four bodies, of which Phillip commanded one, the Count D'Alencon the second, the King of Bohemia the third, and the Count of Savoy the fourth. Besides these were a band of 15,000 mercenaries, Genoese crossbow-men, who were now ordered to pass between the ranks of cavalry and to clear the ground of the English archers, who were drawn up in the usual form in which they fought - namely, in very open order, line behind line, the men standing alternately, so that each had ample room to use his bow and to fire over the heads of those in front. The formation was something like that of a harrow, and, indeed, exactly resembled that in which the Roman archers fought, and was called by them a quincunx.

The Genoese had marched four leagues beneath a hot sun loaded with their armour and heavy cross-bows, and they remonstrated against the order, urging that they were in no condition to do good service without some repose. The Count D'Alencon, furious at their hesitation, ordered them up, but as they advanced a terrible thunderstorm, with torrents of rain, broke over the armies, and wetting the cords of the crossbows rendered many of them unserviceable. At length the crossbow-men were arranged in front, while behind them were the vast body of French cavalry, and the order was given for the battle to begin.