List of sieges of Gibraltar

There have been fourteen recorded sieges of Gibraltar. Although the peninsula of Gibraltar is only 6 kilometres (3.7 mi) long and 1 kilometre (0.62 mi) wide, it occupies an extremely strategic location on the southern Iberian coast at the western entrance to the Mediterranean Sea. Its position just across the eponymous Strait from Morocco in North Africa, as well as its natural defensibility, have made it one of the most fought-over places in Europe.

Only five of the sieges resulted in a change of rule. Seven were fought between Muslims and Catholics during Muslim rule, four between Spain and Britain from the Anglo-Dutch capture in 1704 to the end of the Great Siege in 1783, two between rival Catholic factions, and one between rival Muslim powers. Four of Gibraltar's changes in rule, including three sieges, took place over a matter of days or hours, whereas several other sieges had durations of months or years and claimed the lives of thousands without resulting in any change in rule.

Gibraltar is a mountainous peninsula on the far southern coast of Spain at one of the narrowest points in the Mediterranean, only 15 miles (24 km) from the coast of Morocco in North Africa. It is dominated by the steeply sloping Rock of Gibraltar, 426 metres (1,398 ft) high. A narrow, low-lying isthmus connects the peninsula to the Spanish mainland. High coastal cliffs and a rocky shoreline make it virtually impossible to attack from the east or south. The west side – occupied by the town of Gibraltar, which stands at the base of the Rock – and the northern approach across the isthmus have been densely fortified by its various occupants with numerous walls, towers and gun batteries. The geography of the peninsula provides considerable natural defensive advantages, which combined with its location have imbued Gibraltar with enormous military significance over the centuries.

The first documented invasion of Gibraltar was by the Moors, Muslim Arabs and Berbers who arrived from North Africa at the beginning of the eighth century. They used the area as a base from which to launch an invasion of the rest of the Iberian Peninsula which resulted in most of Iberia coming under Moorish rule. The Spanish Reconquista began later in the eighth century. The campaign eventually took 800 years to force the Moors back across the Strait, and did not reach the Bay of Gibraltar until the fourteenth century. It was not until 1309, nearly 600 years after Gibraltar was first settled, that the first siege of Gibraltar was recorded. King Ferdinand I of Castile began a siege of Algeciras on the other side of the bay in July, but his naval blockade was unable to stop supplies being smuggled in small boats from Gibraltar to the besieged city. He sent an army under Alonso Pérez de Guzmán to take Gibraltar. De Guzmán succeeded after a month-long siege, and Gibraltar was settled by the Castilians for the first time. Six years later, the Moors attempted to retake the peninsula in the brief second siege which was abandoned at the sight of a Castilian relief force. Another Moorish attempt eventually succeeded in the third siege of February–June 1333. A Castilian attempt to retake it in the fourth siege of June–August 1333 failed, as did the fifth siege of 1349–50, in which King Alfonso XI of Castile lost his life in an outbreak of bubonic plague among the besiegers. The Moors of Granada and Fez fell out with each other over Gibraltar in 1411, leading to the Granadans besieging the fortified town in the sixth siege and seizing it from the Marinids of Fez. Enrique Pérez de Guzmán, 2nd Count de Niebla made a failed attempt to capture Gibraltar in the seventh siege of 1436, during which he perished.

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