The siege of Geertruidenberg was a siege of the city of Geertruidenberg that took place between 27 March and 24 June 1593 during the Eighty Years' War and the Anglo–Spanish War. Anglo-Dutch troops under the commands of Maurice of Nassau and Francis Vere laid siege to the Spanish garrisoned city. The siege was unique in that the besiegers used a hundred ships, forming a semicircle in a chain on the Mass river to form a blockade. A Spanish relief force under the command of the Count of Mansfeld was attempted in May but this was defeated and he was later forced to withdraw. Three Governors of the city were killed - after the last fatality and as a result of the failed relief, the Spanish surrendered the city on 24 June 1593. The victory earned Maurice much fame and had thus become a steadfast