Crécy, Battle of, (English form: Cressy, August 26, 1346, an English victory in the Hundred Years' War. It was fought at the French village of Crécy-en-Ponthieu near the English Channel, as Edward III of England marched his army from Normandy to Flanders.
The battle proved that foot soldiers armed with longbows could defeat knights clad in armor and riding on horseback. This meant that the knight was no longer supreme and for this reason Crécy has been termed the "death knell of feudalism."
The victory also made England a military power for the first time. Some historians believe that Crécy marked the first use of cannon in warfare.