Guy's eldest son Robert of Bethune occupied Mortagne, at the confluence of the Scheldt and the Scarpe rivers, and the castle of Helkijn.

Edward I tried various ways to maintain the campaign in France, including pressing the nobility into military service and seizing England's wool exports.

Five days later Lille surrendered to King Philip and the Flemish army, led by Robert of Bethune and 3000 men strong, was allowed to march out to Roeselare.

Although facing problems at home, at the end of August 1297 King Edward eventually moved an army of 895 knights and 7560 infantry and bowman to Flanders.

A large number of Scottish nobles, captured during the battle of Dunbar were required to serve during this campaign, as part of their conditional release from prisons in England.

Meanwhile Edward's Burgundian allies sacked the castle of Ornans in Franche-Comté and the Count of Bar led Welsh troops in plundering expeditions into French territory.

Henry de Lacy, the king's capitaneus in Gascony, ravaged the Toulousaine after Philip had recalled the French field army to Flanders.

During this period negotiations between the French and English Kings and the other warring parties, including Count of Flanders, took place at the Papal court, while simultaneously strengthening the defenses of the Flemish towns in their hands.