909. Edward sends a West Saxon and Mercian army to harry Northumbria
The Anglo-Saxon Chronicle notes that Edward sent an army of West Saxons and Mercians to the territory of the northern army (i.e. Northumbria), and that they spent five weeks there, killing many of the Danes and their cattle.
It is noteworthy that Edward is commanding both the West Saxons and the Mercians: this lends substance to the claim that he was in overall charge of all of the Anglo-Saxons.