In this alarming situation of affairs the sons of Ethelwulf foresaw that the division of Wessex would be their ruin; instead, therefore, of sharing it among themselves they agreed that each should reign over the whole in turn, according to their ages. The reigns of the three eldest were short. Supported successively by their brothers, they fought against the Danes, and all died in the flower of their youth; the last, Ethelred, was still on the throne, when an invasion of the Danes, who penetrated as far as Reading, called all the men of Wessex to arms. The war had a short time before assumed a new aspect; the Danes did not content themselves with descending upon the most fertile portions of the coast with their long ships, or with taking possession of all the horses. Overrunning the country, they ravaged and sacked everything in their passage, and re-embarked in their vessels before the frightened inhabitants had had time to rise up to resist them. From pirates, the Danes had become conquerors, and desired to establish themselves in that England which their predecessors, the Saxons, had formerly snatched from the Britons. Already possessed of East Anglia and a portion of Northumbria, they were threatening Wessex, and had intrenched themselves at Reading. {41} Alfred had recently been married to a princess of Mercia, but his new relations did not give him any support against the Danes, when, having beaten several detached corps of the pirates, Ethelred and Alfred attacked the citadel. The greater number of the Danes sprang outside the walls, "like veritable wolves," says Asser, the historian of Alfred, and the struggle recommenced. The Danes were nearly all tall men; their wandering and adventurous life favored the development of their muscular powers; they did not fear death, for the Walhalla or Paradise of their god Odin, promised to the brave warriors who fell in battle all the pleasure which they esteemed most on earth. The figure of the raven, the confidant of their god, floated on the red flags of the Danes; if its dark wings fluttered on the long folds of silk, victory was certain; if they remained motionless, the Northmen feared defeat. The wings of the raven were fluttering triumphantly before Reading, for the Saxons were defeated and were obliged to retreat.