The battle lasted until 9:00 pm; several accounts claim the heather caught fire and smoke combined with failing light enabled the bulk of the Scots to disappear into the night. The Spanish surrendered next morning, and as regular troops were later shipped home; Lord George Murray, Seaforth and Tullibardine were wounded but the Jacobite leaders also managed to escape. An analysis by historian Peter Simpson attributes Wightman's victory to skilful use of mortars, the superior firepower of his grenadiers and the aggression shown by his infantry.