When King Edward returned to England after his victory at the Battle of Falkirk, the Bruce's possessions were excepted from the Lordships and lands that Edward assigned to his followers. The reason for this is uncertain, though Fordun records Robert fighting for Edward, at Falkirk, under the command of Antony Bek, Bishop of Durham, Annandale and Carrick. This participation is contested as no Bruce appears on the Falkirk roll of nobles present in the English army, and two 19th Century antiquarians, Alexander Murison and George Chalmers, have stated Bruce did not participate and in the following month decided to lay waste to Annandale and burn Ayr Castle, to prevent it being garrisoned by the English.