Battle of Roncevaux Pass

On 15 August 778, as Charlemagne's army withdrew from Spain over the Pyrenees, Basque fighters ambushed its rearguard in the pass of Roncevaux, on today's border between France and Spain, and killed it to the last man. Among the dead was Roland, warden of the Breton March. It was the only serious defeat of Charlemagne's career, and centuries later it became the core of the Song of Roland and a defining legend of medieval chivalry.

By the 770s the Franks were tightening their grip on Aquitaine and pushing towards the Basque lands of Vasconia, which had long resisted them. South of the Pyrenees, Abd ar-Rahman I, the Umayyad emir of Córdoba, was pressing several Muslim governors in the north-east. One of them, Sulayman al-Arabi, governor of Barcelona and Girona, came to Charlemagne at Paderborn offering his submission and that of the rulers of Zaragoza and Huesca in return for military help. He promised that Zaragoza, capital of the Upper March, would surrender easily.

In 778 Charlemagne crossed the Pyrenees with two armies, one through the western passes and the other through Catalonia. But Husayn, ruler of Zaragoza, had meanwhile strengthened his own position and refused to hand the city over. Charlemagne put al-Arabi in chains and besieged Zaragoza for more than a month, before agreeing to withdraw in exchange for gold and the release of prisoners.

On his way home, Charlemagne set out to secure the Basque country, apparently suspecting that many Basques were allied with the Muslims. He ordered the walls of Pamplona, the chief Basque town, to be torn down, and some sources say the city was destroyed outright. Several sources also describe harsh treatment of the local population. The Basques, angered, followed the army into the mountains, where they knew the ground far better than the Franks.

On the evening of 15 August, as the army crossed the pass, the Basques fell on the rearguard and the baggage train. Leading nobles had been placed there, including Roland, Eggihard, mayor of the palace, and Anselm, count of the palace. Lightly armed and holding the heights, the attackers cut the rearguard off from the main army. It held out long enough for Charlemagne and the rest of the force to get clear, but was wiped out. The Basques plundered the baggage, probably including the gold paid at Zaragoza, and vanished into the darkness. Charlemagne's biographer Einhard and the royal annals both record the disaster. The leader of the attack is uncertain, though some historians have pointed to Duke Lupo II of Gascony. The exact site is also debated, but most place it near Roncevaux itself, on the old Roman road over the mountains.

Charlemagne never again led an army into Spain himself, leaving later campaigns to his commanders. The Franks went on to build a frontier zone south of the Pyrenees, the Spanish March, and took Barcelona in 801. Zaragoza, however, stayed in Muslim hands. In 824 a second battle at Roncevaux ended in another Frankish defeat, helping to secure the independence of the Basque Kingdom of Pamplona.

In later tradition the Basque attackers were transformed into a vast Muslim army, recasting a mountain ambush as a clash between Christians and Muslims, although Charlemagne had in fact allied with some Muslim rulers. The Song of Roland, composed by an unknown 11th-century poet, is the oldest surviving epic of medieval France. It became a model of chivalric heroism, and according to tradition it was sung by the Norman army before the Battle of Hastings in 1066.

Our 700 map shows the Frankish Kingdom beside Vasconia and the Umayyad lands in Spain, and the 800 map shows the Carolingian Empire at its height under Charlemagne.