The Battle of the River Berre was fought in 737 between the Arab and Berber Muslim forces of Yusuf ibn Abd al-Rahman al-Fihri, Arab Umayyad Muslim governor of Septimania on behalf of al-Andalus, and the Frankish Christian army led by the Carolingian duke Charles Martel during the siege of Narbonne. The battle, which took place at the mouth of the River Berre, was a significant victory for Charles Martel in the military campaigns of 736–737. During this period, Martel effectively prevented greater Umayyad expansion beyond the Pyrenees.