Derby planned a three-pronged assault. The attack was launched as the French were having their evening meal, and complete surprise was achieved. While the French were confused and distracted by this attack from the west, Derby made a cavalry charge with his 400 men-at-arms from the south. The French defence collapsed and they routed. The battle resulted in a heavy defeat for the French, who suffered very high casualties, with their leaders killed or captured. The Duke of Normandy lost heart on hearing of the defeat. Despite outnumbering the Anglo-Gascon force eight to one he retreated to Angoulême and disbanded his army. The French also abandoned all of their ongoing sieges of other Anglo-Gascon garrisons. Derby was left almost completely unopposed for six months, during which he seized more towns. Local morale, and more importantly prestige in the border region, had decidedly swung England's way following this conflict, providing an influx of taxes and recruits for the English armies. Local lords of note declared for the English, bringing significant retinues with them. With this success, the English had established a regional dominance which would last over thirty years.