Naturally that was too much for the Danes, who immediately launched an attack with lowered lances and the snow spraying out from the front hooves of their heavy horses. Almost indolently the sixteen Folkungs and Arn turned their horses and headed for the nearest grove of trees with their pursuers only a few lance-lengths behind, a distance they were careful to maintain.

From the Danish army loud, triumphant laughter arose as the soldiers saw what a sorry spectacle the enemy made, chased away into the woods.

But not a single Danish rider returned, because among the trees they had encountered three squadrons of light riders who approached at close range and then shot their arrows, finishing off any survivors with their swords.

This sort of cunning wouldn’t work on a second attempt since the Danes didn’t dare pursue the chase after the taunting and fleeing enemy. But by now the Danish army had already been delayed because of the loss of some of their heavy riders, since such horsemen were often high-born men and they had to be tended to after death, unlike the bodies of ordinary foot-soldiers. The Danes were now hungry for revenge, of course, but since they were travelling with riders in the vanguard because of the deep snow, they had no foot-soldiers up front with bows. And their horses could not keep up with the lighter and faster steeds of the Forsvikers.

The next day Arn rode close to the head of the Danish army with all sixty-four of his men. He had chosen a spot where the landscape opened up just beyond two high hills, and there was an expansive view in all directions, so the Danes wouldn’t suspect an ambush.

The Forsvikers quietly approached, moving in so close that they were certain of being able to strike home with their arrows. But this time they aimed not at the iron-clad horsemen or their shields but at their horses. Every horse that was hit was as good as dead, and that meant a horseman on foot, especially if the arrow struck the horse’s belly. The heavy snowfall had prompted the Danes to ride without chain mail for their horses.

Once again the Forsvikers’ attack enraged the Danes, who lined up a hundred horsemen with lances to stage a counterattack.

The Forsvikers now seemed to be frightened and hesitant, and they turned around to flee; with that, the Danish riders attacked at once. And so they rode out into the snow, getting farther and farther away from the rest of the Danish army until the heavy pursuers began to falter, having used up most of their strength and that of their horses. Then Arn suddenly turned his fleeing forces and divided them into two groups, which surrounded the Danish riders and went on the attack, using arrows that pierced right through the chain mail. They managed to kill most of the horsemen, or to cause terrible wounds with their swords before they once again had to flee from the reinforcements sent by the army. But this time they didn’t succeed in enticing their pursuers to their deaths.

A thaw set in, and the soft, knee-high snow was like a blessing for the Forsvikers but a curse for the Danish cavalry.

Over the following days the enemy grew more discriminating when it came to making a sortie against the Forsviker forces. Not much was accomplished by either side, but according to Arn, that was the whole intention.

The Danes stopped for a short time in Skara but did not carry out extensive plundering before they moved on towards the southeast. They didn’t even bother to besiege the fortress of Axevalla. That was an important piece of information; they truly were headed for Lake Vättern and Näs. Along the way stood the castle of Lena. Despite his grumbling over the expense, Birger Brosa had indeed followed Arn’s advice to have it fortified. The Danes would either take the castle or besiege it in order to secure the route to Näs. So the real battle would take place in the vicinity of Lena. There they would gather to see if it was possible to set a trap for the entire Danish army. Arn sent off four riders with messages for Arnäs and Bjälbo, summoning all Swedes and Goths to Lena.

Then it was time for the Forsviker cavalry to cause serious delays for the Danish army so that their own forces would have plenty of time to assemble. It helped that they would soon be several days’ ride from Skara.

The first time the Forsvikers switched to the new way of attacking, they killed more than a hundred of the oxen and other draft animals; they also burned most of the fodder at the very back of the Danish column. Then they cut off the supply line to the rear, so that everyone who was sent on foot to Skara to fetch new animals disappeared, never to be seen again.

When heavy riders were dispatched back to protect the columns that were supposed to procure new supplies and draft animals, Arn immediately moved his men up toward the head of the army and began harassing the standard-bearers by riding close and shooting either the men or their horses. Now the Danes no longer dared send any of their forces to pursue these tormenters.

Every third day Arn sent one squadron home to Forsvik to tend to their minor wounds and tack, to sharpen their weapons and rest, while the next squadron went into service. The most important thing that the Forsvikers achieved during these weeks as they constantly plagued the Danes with their pinpricks was to delay the army and make them frantic with longing to use their superior force for a decisive battle. The cold grew worse every day, and that too ought to make the Danes more inclined to go into battle with all their troops or to proceed across the ice of Lake Vättern to Näs.

The nights were becoming unbearable for them, and the snow meant that the enemy could approach in silence, even on horseback. Anyone who emerged from his tent at night to stand by the fire would certainly have the blessing of warmth, but he was also blinded by the blaze and couldn’t see where the arrows were suddenly coming from. Every night the winter-clad Forsvikers crept up close with their bows.

When the Danes were within a day’s ride from the castle at Lena, their blue-clad tormenters suddenly disappeared, but the tracks in the snow clearly led toward the castle, which King Sverker and his men knew well. It looked as if the Swedes and Goths were finally preparing to fight like honourable men.

And such was truly the case. At Lena the entire Swedish army had assembled, consisting of three thousand men on foot, along with all of the Folkung riders.

But of even greater importance was the fact that from every Folkung estate thralls and stable hands, peasants, caretakers and smiths had arrived in great numbers; even some house thralls had come. Most brought their own longbows with them and five arrows. But anyone who needed a new string or even a new bow or arrows was well supplied. More than three thousand of these low-born archers had gathered at Lena.

The Forsviker cavalry was one hundred and fifty strong; a third of them were heavy riders, the rest were light. Two hundred crossbowmen from Arnäs and Bjälbo and other Folkung estates were also there, as were a hundred men with long horse lances and steel-clad horse shields.

As the Danish army approached Lena, the Folkungs, the Swedes, and the few Eriks who had managed to get past the Danes, took up position in the valley at the foot of Högstenaberget. In the vanguard stood the heavy riders, mostly to tempt the Danes into what appeared to be an easy assault. Behind them stood the light cavalry, and behind them a defensive wall of shields and long horse lances. Only a few paces in back of the line of shields stood the two hundred crossbowmen, and then the entire roaring and battle-ready army of Upplanders and other wild Swedes who were the foot-soldiers.

At the very rear were the more than three thousand longbow archers. They were the key to either victory or defeat.