Viking Age by a Viking leader called Bagsecg and his five earls. Aided by the Great Heathen Army (which had already overrun much of England from its base in Jorvik), Bagsecg's forces, and Halfdan's forces (through an alliance), the combined Viking forces raided much of England until 871, when they planned an invasion of Wessex. On 8 January 871, Bagsecg was killed at the Battle of Ashdown along with his earls. As a result, many of the Vikings returned to northern England, where Jorvic had become the centre of the Viking kingdom, but Alfred of Wessex managed to keep them out of
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