Arn soon altered the sword exercises so that they struck at a post instead of each other. He set logs on end and with an axe made four marks in each post to represent the head, upper arm, knee, and foot of an opponent. Then he showed the boys the most common exercises and pointed to the various spots on his own body that might be injured by too much practice. In that instance, it would be best to stop. It didn’t surprise him that Bengt Elinsson was the one who ignored the initial warnings that his body gave him and instead continued for so long that he made himself sick and reluctantly had to put down his sword and rest for a week.

Sooner or later, of course, they would have to practice fighting each other, but before that time, Arn planned to devise better protection for the head, hands, and cheeks. Pain during practice was fine, since it promoted a necessary respect for the opponent’s sword. But if the young apprentices suffered too much pain and too many wounds, it might lead to fear. Perhaps things would be better when Brother Guilbert came to Forsvik during the winter, Arn thought, consoling himself. For Brother Guilbert had truly made a knight of Arn, and the ability to teach was now considered invaluable at Forsvik.

Thinking about Brother Guilbert also aroused feelings of guilt in Arn. For three months he had left Brother Guilbert to tend to the hard work of assisting the Saracen stonemasons at Arnäs. Yet Arn had not visited them even once, nor had he sent any words of encouragement.

He was ashamed by this sudden insight and set off for Arnäs at once with Abu Anaza, taking the direct route through the woods and across fields. By doing so he arrived by early evening on the same day he had left Forsvik.

When he saw his Saracen brothers toiling with the stone at Arnäs, his eyes filled with tears as he noticed that their clothes hung in rags and sweat glistened on foreheads and bare arms. Even the robe of a lay brother worn by Brother Guilbert had been ripped to shreds by many sharp stone edges and were so filthy with mortar that he too looked more like a thrall than a monk.

No matter how much Arn felt ashamed by his thought-lessness, he couldn’t help riding around the walls to see what had been accomplished. And what he saw matched in every stone and line all his greatest hopes and dreams; in some cases even far exceeding what he had envisioned.

The shortest section of the wall facing Lake Vänern and the harbour was now done, with both corners protected by round towers projecting past the exterior. Above the gaping space of the portal facing the harbour loomed a rectangular tower, and they had finished building twenty paces of the longest part of the wall, the one extending west to east. Accomplishing so much in only a few months and with so few hands would have overwhelmed Saladin himself, thought Arn. This was in truth the beginning of an impregnable fortress.

He was torn from his dreams and brought back to his guilty conscience when the builders discovered his presence. He rode over to meet them, gesturing them forward with both hands. Then he dismounted from his horse and fell to his knees before them. They were all so surprised that none of them said a word.

‘Brothers of the faith!’ he said as he stood up and bowed. ‘Great is the work that you have done, and just as great is my debt to you. Great too has been my neglect, leaving you here as if you were slaves. But I must tell you that I have been working just as hard to see to it that you will be able to endure our hellish Nordic winter. I invite you now to finish this hard work before winter arrives, and two day from now, when you are ready, you will journey with me to the winter quarters where you will rest. The month of fasting will soon be over, and we shall celebrate together; it will be a memorable feast. One more thing I will tell you. I came to see you who are doing the building before I even sought out my kinsmen here at Arnäs!’

When he was done speaking, the Saracens still remained silent, glancing at each other with expressions that showed more surprise than joy upon hearing that their hard work was about to come to such an abrupt halt. Arn went over to Brother Guilbert and embraced him for a long time without saying a word.

‘If you don’t let go of me soon, little brother, you will bring shame upon us both, in the eyes of these believers, as you call them,’ grunted Brother Guilbert at last.

‘Forgive me, brother,’ said Arn. ‘I can only say the same to you as I said to the Saracens, that I have laboured hard and without interruption to ensure a good winter for all of us. I am sorry to see how much all of you have suffered here.’

‘Most of us have doubtless endured worse things than building with stone in cool weather,’ muttered Brother Guilbert. He was not used to seeing the full-grown Arn so easily moved.

‘Perhaps we can leave here in a day’s time instead of two!’ said Arn, his face brightening. ‘What needs to be done in order to secure the building site for the winter?’

‘Not very much,’ replied Brother Guilbert. ‘We’ve tried to arrange the construction with a thought to the coming winter. Or rather, that’s what I have done. These friends of ours have no idea what cold, ice, and frost can do to a structure. We’ve been careful to seal it from the top, but much of the masonry is wet.’

‘What if we use hides to cover the top?’ suggested Arn.

‘Yes, that would probably be best,’ replied Brother Guilbert with a nod. ‘Do you think you could obtain lead in the spring?’

‘Lead?’ repeated Arn, looking puzzled. ‘Yes, but perhaps not in large amounts. What will you need lead for?’

‘The joints at the very top,’ replied Brother Guilbert, taking in a deep breath. ‘Just picture us pouring molten lead from the top and down along every joint that’s exposed to the open air. Does that help you understand what I have in mind?’

‘Yes,’ said Arn, nodding. ‘If we could apply lead to the joints at the very top, then no water would run down…or ice. That’s a good idea. I’ll try to procure the lead that you need. But tell me instead that you are well and that your body doesn’t ache more than it should after labouring so hard and that you forgive me for leaving you here.’

‘I’ll wait with that until I’ve seen my winter quarters and had my first bite of ham, because during the month of fasting, there hasn’t been much of that here,’ said Brother Guilbert with a laugh. And he gave Arn a shake, as had been his custom when he chastised his young apprentice at Varnhem.

‘But surely Ramadan doesn’t apply to you,’ said Arn, opening his eyes wide. ‘Because you haven’t—?’

‘By no means!’ replied Brother Guilbert, cutting off the question before it might sound offensive. ‘But if I am to work with these unbelievers, I’ve found it best to fast along with them. That way there is no chance of any grumbling.’

‘No food between sunrise and sundown?’ mused Arn. ‘And at the same time doing such hard work. How do you manage it?’

‘A man just gets fat from all that eating,’ muttered Brother Guilbert, feigning ill-humour. ‘And we spend the first hours of work pissing away all the water that we’ve drunk. Then we eat like genies as soon as the sun sets. We eat for hours, and it’s fortunate that we don’t wash down all that mutton with wine.’

While Brother Guilbert took the Saracen builders with him to strike camp, Arn rode over to Arnäs and immediately found those he was looking for. Eskil and his son Torgils were sitting in the accounting room of the big tower. His father, Magnus, was up in the highest chamber with the physician Yussuf. They gave Arn a hearty welcome, and all three of his kinsmen began talking at the same time about the new construction work, which they wanted to show him at once. Arn didn’t need any persuading.

They had to climb a bit over the scaffolding to reach the area where the work was being done, since the new walls were almost twice as high as the old ones. Up there they were able to proceed a short distance along the machicolations where all the arrow loops were built so that they were wide on the inside but only a narrow slit on the outside. Anyone could clearly understand the reason for this without any explanations from Arn. A man standing at the arrow slit could aim his bow or cross-bow with a good view in all directions, while anyone standing below on the other side of the moat would have a hard time shooting an arrow through the narrow opening that was visible from the outside.