The Battle of Flodden or Flodden Field, or occasionally Battle of Branxton (Brainston Moor), was part of a conflict between the Kingdom of England and the Kingdom of Scotland. The battle was fought in the county of Northumberland in northern England on 9 September 1513, between an invading Scots army under King James IV and an English army commanded by the Earl of Surrey. It was a decisive English victory. In terms of troop numbers, it was the largest battle fought between the two Kingdoms. James IV was killed in the battle, becoming the last monarch from the British Isles to suffer such a death.