Edward had come to relieve Stirling Castle, one of the few Scottish castles still under English control, and faced a smaller, but better led and better positioned Scottish force.
The Scots won a heroic victory and Edward fled, narrowly escaping capture. Despite Scotland’s right to full independent status not being recognised until 1328, the Battle of Bannockburn marked the end of English control of the kingdom.
While documentary evidence and various artefacts from the battle have survived, this latest find is the only weapon discovered at the site.
Made of iron and measuring 35mm (approx 1.5 inches) in length, the arrowhead is of a type in common use during the 14th century.
It is not known whether it was ever fired in anger, but the area where it was found is thought to have been where the engagements of the first day of the battle took place.
It was there, between the Borestone site and the crossing of the Bannockburn further south, that Robert The Bruce killed Henry de Bohun before repulsing a frontal attack from Edward II’s army.
Experts at the NTS have yet to establish whether the arrow was English or Scottish. However, while the English longbowmen are mentioned in accounts of the second day of the battle, when they were driven from the field by the Scottish cavalry, no mention is made of them on the first day.