Æthelred of Wessex of Mercia, appealed to him for help against the Vikings. Æthelred and his brother, the future Alfred the Great, led a West Saxon army to Nottingham, but there was no decisive battle, and Burgred bought off the Vikings. In 874 the Vikings defeated Burgred and drove him into exile. In 870 the Vikings turned their attention to Wessex, and on 4 January 871 at the Battle of Reading, Æthelred suffered a heavy defeat. Although he was able to re-form his army in time to win a victory at the Battle of Ashdown, he suffered further defeats on 22 January at
Battle of Basra (871) a defense, but they were easily overwhelmed by cavalry and infantry attacks. The government commander Bughraj's forces, supported by several Basrans, were split between al-Mirbad and al-Khurayba, but they were ineffective at halting the rebels' advance. By Friday evening 'Ali ibn Aban's troops had reached the mosque, which 'Ali ordered to be burned. A group of Basrans, however, ambushed his men, killing several Zanj and forcing them back. Fearing further attacks from the city militia, 'Ali decided to withdraw for the evening, and set up his army camp in a graveyard. The battle continued over the course of the next