During the Franco-Flemish War king Philip IV the Fair gathered strong forces of nomblemen to crush the revolt of Flemish cities. While his army had advantage over Flemish forces, which consisted mostly of militia formed from men all occupations, French commander of the forces, Robert de Artois, attacked opponents on the least favorable terrain - marshes next to Kortrijk.
The heavy French cavalry was unable to use its full potential because battlefield was riddled with brooks and ponds. Infantry and crossbowmen sent forward were exposed to attacks from flanks, so de Artois ordered attack of heavy cavalry, but without letting their own men to retreat, some of which ended up trampled to death.
Even charge of the cavalry was unable to break Flemish ranks, most of the noblemen were knocked off their horses and killed using goedendag, a weapon designed to penetrate spaces between plates of the armor. Count de Artois with his 700 men of rear guard joined the battle, but in the muddy battlefield were unable to make a difference.
Robert de Artois was killed in the battle, which was later called Battle of the Golden Spurs due to large number of golden spurs that Flamish troops collected from bodies of dead French noblemen. This battle also forced king Philip IV to seek more diplomatic way to finish the conflict.
French king Philip IV tries to discipline the rich Flemish cities, who enjoy their special status under his rule. But his actions lead to an open revolt.