Great Heathen Army Anglia and spent the winter of 869–70 at Thetford. There was no peace agreement between the East Anglians and the Vikings this time. When the local king Edmund fought against the invaders, he was captured and killed. In 871, the Great Summer Army arrived from Scandinavia, led by Bagsecg. The reinforced Viking army turned its attention to Wessex, but the West Saxons, led by King Æthelred's brother Alfred, defeated them on 8 January 871 at the Battle of Ashdown, slaying Bagsecg in the process. Three months later, Æthelred died and was succeeded by Alfred (later known as Alfred the Great),
Battle of Ashdown and the Anglo-Saxons were forced to retreat while the Danes pursued. The Danish armies caught up with the Anglo-Saxons on the field of Ashdown, located somewhere near the border of Oxfordshire and Berkshire (the precise location is unknown). It was January 8, 871. The weather was cold and damp, and the Berkshire Downs were soaked and boggy. King Ethelred divided his army in two, positioning the halves on either side of a ridgeway. Ethelred commanded one side, Alfred the other. As the Danes approached, they also split their army. Alfred watched as the Danes drew nearer, waiting for the order