Battle of Saint-Omer

Timeline

1. 1340Artois frontier · FranceAfter the Battle of Sluys, the English and Flemish allied forces continued pushing into the French interior, seeking to expand their gains. The French ordered Robert of Artois to concentrate troops along the Saint-Omer line, using the local terrain and city defenses to prepare for the attack.
2. 1340outside Saint-Omer · FranceThe allied forces launched their attack; the French countered with cavalry charges and infantry squares. Robert of Artois commanded well, routing the allied vanguard and forcing it to retreat. The French won a tactical victory, but neither side achieved a decisive breakthrough.
3. 1340northern France · FranceAlthough victorious, the French failed to recover lost territory or relieve pressure toward Tournai; the allies likewise did not abandon their offensive against northern French cities. Both sides turned to attrition and siege warfare, and in September of the same year signed the Truce of Esplechin, bringing the fighting to a temporary halt.