Siege of Narbonne

In 737, after Avignon, Charles Martel besieged Narbonne, the strategic Umayyad port held since 719 (taken by Al-Samh). The city still had Roman walls (Sidonius Apollinaris, 465). A relief army from al-Andalus was intercepted and crushed at the Berre; the garrison nonetheless held. Lack of siege gear, winter, Hunald of Aquitaine’s hostility and Maurontius’s revolt in Provence: the siege was lifted before the end of 737. In withdrawal the Franks devastated Nîmes, Agde, Béziers and Maguelone. Narbonne remained Umayyad until 759. Partial Frankish military success (relief broken, region ravaged) but politically inconclusive as to capturing the city (French/English Wikipedia).

Since 719 Narbonne (Arbūna) was base and capital of Muslim Septimania. Local tradition: surprise entry in autumn 719 during the grape harvest, gates open — explaining a swift conquest despite the walls, then a long reconquest (French Wikipedia). Defending men killed, women and children deported, small garrison left. Yusuf al-Fihri arrived c. 734; in 735 Arles with Maurontius. After Poitiers (732), Martel aimed to isolate then retake the place. English Wikipedia stresses Gothic/Gallo-Roman arrangements with the Umayyads against Frankish expansion. The 737 siege is thus both a military operation and a regional political test.

Land blockade of a fortified city of Roman origin, trying to cut approaches. The Umayyads used maritime/river access (ships ascending toward the city; later geographic description of Arbūna by al-Zuhri, French Wikipedia). ʿUqba / ʿUmar’s relief army was beaten at the Berre, further isolating the garrison without forcing surrender. No reliable ancient strengths. Lifting the siege answered logistical (gear), seasonal (winter) and strategic (Hunald, Maurontius) constraints rather than a pitched defeat before the walls (French/English Wikipedia).

Narbonne remained the last major Umayyad stronghold in Septimania until the 752–759 siege (Pepin the Short). The 737 campaign isolated the place, destroyed several regional supports and confined the garrison. English Wikipedia: Frankish military success against the Caliphate, political indecision for lack of taking the city. Prepared the later Carolingian reconquest. Between 752 and 759 Frank–Saracen–Visigoth conflicts; in 756 Zaragoza rose, limiting Andalusian help (French Wikipedia).