The Battle of Cadzand was an early skirmish of the Hundred Years' War fought in 1337. It consisted of a raid on the Flemish island of Cadzand, designed to provoke a reaction and battle from the local garrison and so improve morale in England and amongst King Edward III's continental allies by providing his army with an easy victory. On 9 November Sir Walter Manny, with the advance troops for Edward III's continental invasion, made an attempt to take the city of Sluys, but was driven off.