Siege of Numantia (134-133 BC): Last Stand in Celtiberia

The Siege of Numantia was the final campaign of Rome’s long war against the Celtiberians of central Spain. From the autumn of 134 BC to the summer of 133 BC, Scipio Aemilianus surrounded the hilltop city with a ring of fortifications and starved it into surrender. Numantia’s resistance against far larger Roman forces made it a lasting symbol of courage and independence in Spain.

Background

Rome first entered the Iberian peninsula during the war with Hannibal, and after 197 BC it governed two provinces there, Hispania Citerior and Ulterior. The Celtiberians of the central plateau resisted Roman expansion in a series of wars. Numantia, a strongly placed town of the Arevaci tribe, became the centre of this resistance.

In 153 BC a Roman army under the consul Quintus Fulvius Nobilior was badly defeated near Numantia. Fighting resumed in 143 BC in what is called the Numantine War. Several Roman commanders failed to take the city, and some were accused of breaking agreements with the Celtiberians.

Celtiberian Numantia

Numantia occupied a flat-topped hill above the confluence of the Douro and the Merdancho. Excavations have revealed long streets laid out in a regular pattern, lined with rectangular houses that had stone foundations, mud-brick walls and cellars. Its inhabitants raised livestock and grain and produced fine painted pottery decorated with animals, warriors and abstract designs.

The Celtiberians were formidable fighters, armed with short swords, javelins and shields, and they knew the harsh climate and terrain of the plateau well. Their towns were often linked by alliances, so a threat to one could bring help from others. This made a short Roman campaign difficult.

Years of Roman failure

After 143 BC Roman commanders came and went with little success. Quintus Pompeius, consul in 141 BC, besieged the city but suffered heavy losses in the winter. He then made a secret agreement with the Numantines and later denied it, and the Senate refused to honour it. His successor, Marcus Popillius Laenas, was also defeated.

These defeats harmed Rome’s reputation and morale. Service in Spain became unpopular among Roman citizens, and in some years the levy of new troops met open resistance in Rome itself.

Humiliation of Mancinus

The lowest point for Rome came in 137 BC. The consul Gaius Hostilius Mancinus was trapped with some 20,000 men and had to surrender. A young quaestor, Tiberius Sempronius Gracchus, negotiated a treaty that saved the army in exchange for peace.

The Senate refused to accept the treaty. To free Rome from its oath, Mancinus was handed over to the Numantines, stripped and bound, but they refused to accept him. The episode embittered Tiberius Gracchus, who later became the reforming tribune of 133 BC, as described in the article on the Gracchi reforms.

Scipio Aemilianus takes command

In 134 BC the Roman people elected Scipio Aemilianus consul for a second time, with a special exemption, and gave him the Spanish command. He had already destroyed Carthage in 146 BC at the end of the Third Punic War, and he was the most famous general of his day.

Scipio found the army in Spain demoralised and undisciplined. According to Appian, he expelled traders and prostitutes from the camp, cut down on baggage and made the soldiers march, dig and train hard. He brought volunteers and friends from Rome, and his staff included the young Gaius Marius and the Numidian prince Jugurtha, who led a contingent with elephants.

His total force is estimated at about 60,000 men, including allies. Numantia, by contrast, had perhaps 4,000 to 8,000 fighting men, according to ancient estimates.

The blockade

Scipio decided not to fight the Numantines in open battle or storm the walls. Instead, he enclosed the city with a continuous wall and ditch, which Appian measures at 48 stadia, about 9 kilometres. Two main camps and several smaller forts, with towers at regular intervals, were linked along the line.

Because the river Douro flowed past the city, he blocked it with floating timbers fitted with blades and spikes, so that boats and swimmers could not get through. Signals by flag and fire allowed the forts to call for help at once. The Numantines were cut off from all supplies.

Scipio’s caution was deliberate. He believed the Numantines, fighting for their homes and familiar with the terrain, were more dangerous in battle than their numbers suggested, and that his own troops were not yet reliable. Ancient writers report that he preferred to win at the lowest possible cost in Roman lives, and that only a poor general fought a battle without need. The blockade also gave his soldiers useful work and restored their discipline.

Archaeology has confirmed much of this. Excavations by the German archaeologist Adolf Schulten between 1905 and 1912 identified the remains of Roman camps around the city, including sites at Castillejo and Peña Redonda.

The fall of Numantia

As food ran out, the Numantines sought help. A noble named Retogenes, with a few companions, crossed the Roman lines at night and rode to other Arevacan towns. At Lutia some young men wanted to help, but the town’s elders warned Scipio. He arrived quickly and, according to Appian, cut off the right hands of 400 young men as a punishment.

The Numantines sent envoys to ask for terms, but Scipio demanded unconditional surrender. The famine became so severe that, according to Appian, the defenders resorted to eating leather and finally human flesh.

In the summer of 133 BC Numantia surrendered. Appian says many inhabitants killed themselves rather than give up. Scipio selected 50 survivors to walk in his triumph, sold the rest into slavery and razed the city. He received the honorary name Numantinus.

Legacy

The fall of Numantia ended large-scale Celtiberian resistance, although Roman control of the whole peninsula was completed only under Augustus in 19 BC. A smaller Roman town was later built on the site.

In Spain, Numantia became a national symbol of resistance to overwhelming odds. Miguel de Cervantes wrote a tragedy, El cerco de Numancia (The Siege of Numantia), in the 1580s, and the play was reportedly staged during later sieges, including the French siege of Zaragoza in 1809. Nineteenth-century Spanish painters also took up the theme.

The site was securely identified by excavations in the 19th century. Today the archaeological park near Garray and the Numantine Museum in Soria display Celtiberian pottery, weapons and the remains of the town.

Two of Scipio’s junior officers went on to shape Roman history. Gaius Marius, then a young soldier who won Scipio’s praise, later became consul seven times and reformed the Roman army. Jugurtha, whose skill impressed the Romans at Numantia, later seized the throne of Numidia and fought Rome in the Jugurthine War (112–105 BC), in which Marius commanded against him.

Timeline

• 153 BC: Quintus Fulvius Nobilior is defeated near Numantia.
• 143 BC: The Numantine War begins.
• 137 BC: Gaius Hostilius Mancinus surrenders; Tiberius Gracchus negotiates a treaty the Senate later rejects.
• 134 BC: Scipio Aemilianus becomes consul for the second time and arrives in Spain.
• Autumn 134 BC: The Roman blockade of Numantia is completed.
• Early 133 BC: Retogenes breaks out; Scipio punishes the young men of Lutia.
• Summer 133 BC: Numantia surrenders and is destroyed.
• 1905–1912: Adolf Schulten excavates the Roman siege camps.

Why it matters

The Siege of Numantia showed Rome’s ability to wear down determined resistance through engineering and patience rather than battle. It also became one of the most powerful stories of Spanish identity, remembered for the courage of a small city against a great empire.