The capture of Liège took place between 13 and 31 October of 1702 during the War of the Spanish Succession. It formed part of the Grand Alliance's campaign to secure the Meuse valley. Anglo-Dutch forces under the Duke of Marlborough occupied the city without resistance on 15 October, but the Citadel of Liège and the Chartreuse fort continued to be held by Bourbon troops from France, Spain, the Bishopric of Liège, and the Electorate of Cologne.
After a week of intense bombardment and assaults directed by the Dutch engineer Menno van Coehoorn, the citadel capitulated on 23 October, followed by the surrender of the Chartreuse on 31 October. The victory resulted in the capture of several thousand French troops and secured Allied control of the Meuse region.