The author of Bannockburn recounts the New Model Army’s upset victory in 17th-century Scotland that cemented Oliver Cromwell’s military reputation. The victory at Dunbar of Oliver Cromwell’s New Model Army over the Scots under David Leslie in 1650 merits a major place in the long succession of Anglo-Scottish battles. The Scots had brought Cromwell’s invading army to its knees, but Cromwell took the offensive and, in one of the great upsets of military history, the Scots army was routed.