G. A. Henty 
The Dragon and the Raven 

In a time of chaos and Viking onslaught, Alfred the untested Saxon king, must fight to save his ravished land. The tale unfurls through the eyes of a young thane, Edmond, who becomes Alfred’s friend and mightiest warrior. When Danes over run the land and the Saxons capitulate, this young knight trains and leads a devoted corps of pike-men to recapture the kingdom.