Edmund and Egbert devoted most of their time to the building of the new fort, living very simply, and expended the whole of the revenues of the lands on the payment of the freemen and masons engaged upon the work. The Roman fort was a parallelogram, the sides being about 200 yards long, and the ends half that length. It was surrounded by two earthen banks with wide ditches. These were deepened considerably, and the slopes were cut down more sharply. The inner bank was widened until it was 15 feet across the top.
On this the wall was built. It was faced on both sides with square stones, the space between filled up with rubble and cement, the total thickness being 4 feet. The height of the wall was 8 feet, and at intervals of 30 yards apart towers were raised 10 feet above it, one of these being placed at either side of the entrance. Here the bank was cut away, and solid buttresses of masonry supported the high gates. The opening in the outer bank was not opposite to the gate in the inner, being fifty yards away, so that any who entered by it would have for that distance to follow the ditch between the two banks, exposed to the missiles of those on the wall before arriving at the inner gate.
Five hundred men laboured incessantly at the work. The stone for the walls was fortunately found close at hand, but, notwithstanding this, the work took nearly six months to execute; deep wells were sunk in the centre of the fort, and by this means an ample supply of water was secured, however large might be the number within it.
A very short time after the commencement of the work the news arrived that King Edmund of East Anglia had gathered his forces together and had met the Danes in a great battle near Thetford on Sunday the 20th of November, and had been totally defeated by them, Edmund himself having been taken prisoner. The captive king, after having been for a long time cruelly tortured by the Danes, was shot to death with arrows. It was not long after this that news came that the whole of East Anglia had fallen into the hands of the Danes.
Early in the month of February, 871,just as the walls of his fort had begun to rise, a messenger arrived from the king bidding Edmund assemble all the men in his earlship and march at once to join him near Devizes, as the news had come that a great Danish fleet had sailed up the Thames and had already captured the royal town of Reading.
Messengers were sent out in all directions, and early the next morning, 400 men having assembled, Edmund and his kinsman marched away with them towards Devizes. Upon their arrival at that town they found the king and his brother with 8000 men, and the following day the army moved east towards Reading.
They had not marched many miles before a messenger arrived saying that two of the Danish jarls with a great following had gone out to plunder the country, that they had been encountered by Aethelwulf, Earl of Berkshire, with his men at Englefield, and a fierce battle had taken place. The Saxons had gained the victory, and great numbers of the Danes had been slain, Sidroc, one of their jarls, being among the fallen.
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.
