The defeat of the Spanish relief force and the taking of Dunkirk ended the immediate prospect of a Royalist expedition to England. Dunkirk surrendered to French forces ten days after the battle on 24 June, and Cardinal Mazarin honoured the terms of the treaty with Oliver Cromwell and handed the port over to the Commonwealth. The campaign of the English contingent in Flanders did not end with the battle of the Dunes and the capture of Dunkirk. Part of the English contingent was left to garrison Dunkirk and Mardyke under the command of Sir William Lockhart, while the rest, under Sir Thomas Morgan, continued to serve with Turenne's army in the field.