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 Ashdown to charge. However, his brother Ethelred had decided that he must pray before the battle and refused to advance until his prayer service was complete. Seeing that the Danish movement would cost him the advantage of high ground, Alfred decided to attack without help from his brother. The Anglo-Saxons' charged on the Danes on their side of the ridgeway. Although nothing specific is known about the fighting, it is likely that both sides employed shieldwalls from which to push and batter against each other. Eventually the Danes broke and fled across the downs. Only later did Ethelred launch his own