Three days later the royal army arrived in sight of Reading, being joined on their march by Aethelwulf and his men. The Danes had thrown up a great rampart between the Thames and the Kennet, and many were still at work on this fortification. These were speedily slain by the Saxons, but their success was a short one. The main body of the invaders swarmed out from the city and a desperate engagement took place. The Saxons fought valiantly, led by the king and Prince Alfred; but being wholly undisciplined and unaccustomed to war they were unable to withstand the onslaught of the Danes, who fought in better order, keeping together in ranks: after four hours' hard fighting the Saxons were compelled to fall back. They rallied again a few miles from Reading. Ethelred and Alfred went among them bidding them be of good cheer, for that another time, when they fought in better order, they would gain the victory; and that their loss had not been greater than the Danes, only that unhappily the valiant Ealdorman Aethelwulf had been slain. Fresh messengers were sent throughout the country bidding all the men of Wessex to rally round their king, and on the fourth morning after the defeat Ethelred found himself at the head of larger forces than had fought with him in the last battle. The Danes had moved out from Reading and had taken post at Ashdown, and as the Saxon army approached they were seen to be divided into two bodies, one of which was commanded by their two kings and the other by two jarls. The Saxons therefore made a similar division of their army, the king commanding one division and Prince Alfred the other. Edmund with the men of Sherborne was in the division of Alfred. The Danes advanced to the attack and fell with fury upon them. It had been arranged that this division should not advance to the attack until that commanded by the king was also put in motion. For some time Alfred and his men supported the assaults of the Danes, and then, being hardly pressed, the prince sent a messenger to his brother to urge that a movement should be made. The Saxons were impatient at standing on the defensive, and Alfred saw that he must either allow them to charge the enemy or must retreat. Presently the messenger returned saying that the king was in his tent hearing mass, and that he had given orders that no man should move or any should disturb him until mass was concluded. Alfred hesitated no longer; he formed his men into a solid body, and then, raising his battle cry, rushed upon the Danes. The battle was a furious one. The Danes were upon higher ground, their standard being planted by the side of a single thorn-tree which grew on the slopes of the hill. Towards this Alfred with his men fought their way.