The siege of Grave was a siege that took place between 18 July to 20 September 1602, as part of the Eighty Years' War and the Anglo–Spanish War. The Spanish-held city of Grave was besieged by a Dutch and English army led by Maurice of Orange and Francis Vere respectively. After a siege of nearly two months the city surrendered when a Spanish relief army under Francisco de Mendoza was defeated just outside the city by the besiegers. The defeat was severe enough to cause a major mutiny in the Spanish army.