What the Wall Held

I. Fourteen Weeks

"Contact," said Volkward, without raising his voice, which with him was already the loudest warning anyone could expect. "A ship, Warp exit, high over Section East."

Ruthard was at the window of the command casemate in three strides, the scope already in his hand before the Techmarine had finished the sentence. At Bastion Torstein you reckoned with a good many things. With sandstorms out of the interior, with border violators, with the annual exercises of the garrison regiments that advanced against the outer ditches every spring and every spring took away the same lesson. A ship out of the Warp, without announcement, without a transponder, had not occurred in twelve hundred years, not since the old frontier wall from the time of the settlement had been built up into the line between the East Basin and the interior.

"Class?" asked Ruthard, without lowering the scope.

"Cruiser size. Astartes build." Volkward turned round, and in his face, which in forty years of service had spoken an average of forty words a day, there stood more than his voice would ever show. "Not an Imperial pattern."

Outside, on the walkway above Section Centre, Reimbold had heard the report first and had stopped, his eyes on the distant point of light, with the same feeling every young brother came to know at some time: that twelve hundred years of preparation suddenly sounded less like an exercise and more like an account that was finally falling due.

Sigward, the Chapter Master, stepped soundlessly into the casemate, as he had for two hundred and fourteen years of service, without anybody ever having heard him come. He looked at the screen, at the distant point of light settling slowly into a fixed orbit, and said nothing, which was already a kind of order: whoever said nothing required you to carry on.

It took six hours before the first landing craft broke through the outer sensor screen, and in those six hours Bastion Torstein did what she had been built for over twelve centuries. She prepared, without haste, because haste made mistakes, and without doubt, because doubt had no place here, not since men had stopped voicing it aloud generations ago. Ammunition depots were opened, emergency lines manned, the Builders Lodge ordered out of the workshops into the shafts, and over all of it lay the even, almost tedious discipline of a Chapter that regarded an attack as a planning error on the enemy's part and not as an occasion for excitement.

What would stand in the Standing Book at the end of that day, nobody suspected that morning. It was to take fourteen weeks and three days before anybody was permitted to write the right line, and in that time Bastion Torstein was to learn more about herself than in the twelve hundred years before.

II. What the Sensors Showed

The landing craft came in three separate waves, staggered, distributed across Sections West, Cauldron and East, with a precision no ork attack wave had ever shown and that no enraged cultist mob could have mustered either. Ruthard saw it on the tactical screen and knew, before the first troops fanned out, what Volkward confirmed to him a moment later in the command casemate.

"Astartes armour. No known heraldry." The Techmarine threw the magnified image onto the main screen: a figure in ash-grey plate, a symbol on the left shoulder that looked like a fist crushing a handful of ash while it ran through the fingers. "I have compared it against the entire ship archive. No match in the Codex Astartes. No match among the known renegade Chapters that have been reported to us."

"Then it is something new," said Sigward.

"Or something very old that nobody has recorded any more." Ruthard watched the ash-grey figures forming up down at the ditch, methodically, without the wild rushing forward you saw from untrained attackers. This force knew sieges. It knew how to read a wall before you charged it, and it wasted no men in places where the defence still stood.

"They are not coming to take her," said Sigward quietly, more to himself than to the others, while he studied the first movement patterns. "They are coming to break her. That is a difference only a man notices who has seen both."

Gerwin, the Apothecary, had by now also arrived, with the calm haste of a man who knew the coming hours would need him. He looked at the image on the screen longer than the others, with a gaze that went past the armour to something else.

Before Gerwin spoke, the casemate had been silent for a while, each man occupied with the image on the screen, with his own calculations of what a nameless, long-serving Astartes Chapter wanted at a frontier fortress like Torstein, which possessed neither wealth nor strategic value, except the road behind it and the people it protected.

"Their plate is old," he said at last. "Not worn out. Old. Maintained over centuries, with parts from at least three different patterns of manufacture. That is not a young Chapter still wanting to make a name for itself. That is one that has existed long enough to erase its own traces."

The first report went out to all four sections at midday, brief, as the Chapter Rule required: Astartes contact, origin unknown, posture: no change. Not a word of it betrayed what everybody in the command casemate already suspected: that for the first time since her founding Bastion Torstein would be fighting neither men nor greenskins, but herself, against what a Chapter could become if it lost what the Wall Brothers never intended to lose.

III. The Listening Well

Jann Kolde had not finished reading the report when he was already calling the Builders Lodge together. Four hundred years of tradition had taught him that a listening well was needed first and a defence plan only afterwards, and so he sent the first twelve parties down into the shafts behind the wall, with instructions to man each of the forty-one wells along the line and to report what they heard.

He took the well under the gate casemate in Section Centre himself, because the only road west ran through there and because a road you had to keep open was also a way a clever enemy would seek underground as soon as he could not get through above it. He sat the first two hours alone in the dark, his hand on the cold stone, and heard nothing but his own blood in his ears and, far above, the muffled rumble of the first engagements.

Wiechert, who had copied the well from him in the third year of his training, came around midday with a soup nobody had ordered, because the Builders Lodge had learned that too: that a man who listens for twelve hours without eating starts hearing things that are not there. Jann Kolde took the bowl without turning his eyes from the shaft.

"What do you hear?" asked Wiechert.

"Nothing yet. That worries me more than hearing something." He spooned without tasting. "A man who lands the way they landed does not dig out of desperation. He digs because he has a plan that needs time, and nobody takes time who believes he will be finished in a day."

It came shortly after the first dusk: a scraping, far below, rhythmic, too regular for stone moving of itself, too quiet for machine work, exactly right for patient hands with good tools.

Jann Kolde reported it at once, with the terse formula the Builders Lodge had kept ready for precisely this case for generations: "Sap-work suspected, Section Centre, depth undetermined, bearing on the gate casemate." Within an hour the Builders Lodge had sent three further parties down into the shafts under Section Centre on the strength of his report, with digging tools and the long, curved listening rods that had hung in the workshop for generations for precisely this purpose and that most of the younger brothers had never touched outside an exercise. It was the first line of a report that would fill hundreds more in the coming weeks, and he knew, while he spoke it, that the wall alone would not win this war. What lay beneath it would decide it just as much as what happened above it, and the Builders Lodge had only the same hands for both.

IV. Tel'brand's Demand

On the evening of the first day a vox channel opened that nobody had requested, on a frequency actually reserved for internal Chapter communication, which alone was a message in itself: whoever knew this frequency also knew the Wall Brothers, better than a stranger had any business knowing them.

"Bastion Torstein." The voice was deep, calm, with the kind of patience you heard only in very old Astartes. "I speak for the Ash Sons. My name is Tel'brand, captain. I am not calling upon anybody to surrender. I am demanding a handover."

Ruthard took the channel himself, in the command casemate, with Sigward and Volkward beside him and Gerwin, who had arrived as soon as he heard of the hail. "What do you require?"

"Living gene-seed. Cylinders, from your apothecarion, as many as your Chapter can spare without dying itself." A pause, short enough to seem calculated, long enough to carry weight. "We have not come to destroy you, captain. Our own line has been drawing for over two hundred years on eleven cylinders whose origin nobody remembers any more. It holds. But it is weakening, a little more with every generation, and my Apothecary tells me that in three, perhaps four centuries we will no longer be able to raise enough true brothers to carry the name. Your line is pure. Imperial Fists, unbroken since the origin. Give us what you can spare, and we withdraw without another shot."

There was, for a moment, something almost sincere in the voice, something none of them in the casemate had expected from a renegade who had just sent three landing waves against an Imperial fortress. Ruthard looked across at Sigward, but the Chapter Master was already speaking before Ruthard could answer himself, in a voice that needed no anger to carry weight.

"Wall Brothers take nothing. Wall Brothers hold. That is not a tactic, Captain Tel'brand. That is everything we are, since we were given this world, and it does not become less true because you bring a good reason with you."

At the other end it stayed quiet for a moment, long enough that Volkward was already checking whether the connection still stood.

"I feared as much," said Tel'brand at last, without any recognisable bitterness, almost regretfully, as though he were speaking of weather he could not change. "I had hoped it would end differently. My brothers need what you have more than you need what you have. But I understand a wall that gives nothing. I was one myself, before I was what I am now." Ruthard left the dead channel open a moment longer, as though he could draw a second answer out of it, then turned to Sigward. "You offered him nothing. No talks, no delay."

"A man who asks a wall for gene-seed is not really negotiating," said Sigward. "He is only testing how firmly it stands before he breaks it. We gave him the answer he expected anyway. Anything else would only have lengthened his preparation."

The channel closed without further greeting. Twenty minutes later the first real wave began, with a hardness that none of the preceding probes had so much as hinted at.

V. The First Storm

They came over the bearing points in Section Cauldron, where the wall was strongest, because Tel'brand evidently knew what every good besieger knew: that an enemy who seeks the strength instead of the weakness betrays his true intention least. Assault squads in carrier pods, followed by a wave of ash-grey plate that overran the forward defensive line within minutes and ate its way into the second ditch.

Reimbold stood in the second rank, bolter raised, and fired into the charging formation until his magazine was empty and he took up the chainsword, because reloading in that moment would have been a decision he could no longer afford. Beside him Hartung felled an Ash Son with a single blow that drove the chain through ceramite and what lay beneath it in one movement, and shouted something that was lost in the noise of the explosions.

The Ash Sons fought differently from the rare Astartes engagements the Chapter Rule had handed down to Ruthard. They wasted no movement. Where a Wall Brother sought cover, they had often calculated it before the attack began, and where a breach opened, three of them pressed through at once without hindering one another, like a single machine with many limbs.

"How does it look?" somebody bellowed over the company channel, in the middle of the noise, one of those questions you ask in a battle without really expecting an answer.

Reimbold, the youngest of the company, sixty-one years at Torstein, gave it anyway, while he pulled the chainsword out of a falling opponent and turned to the next figure. "The wall is not holding. We are holding. The wall just does not notice."

It was a stupid sentence, really, spoken in the middle of the mêlée, but that same evening it ran through all four sections, passed from man to man over the vox, until even Sigward heard it and, for the first time in weeks, did something close to a smile. Years later it would be called the best sentence ever spoken about the Chapter, without anybody remembering exactly in which minute of the battle it had fallen.

The first storm broke after forty minutes, with sixteen dead Ash Sons whose bodies the Wall Brothers did not recover, and three dead Wall Brothers whose names Onno Petke cut into three oak tablets the following night, because the Builders Lodge named its own dead before anybody else did it for them. They were not, before the end of the siege, to be the last tablets he carved.

In the afternoon of the same day came the second wave, harder than the first, because Tel'brand had learned from the failed morning: this time the Ash Sons did not press against the front of the emergency line but against both its flanks at once, with the aim of enveloping it instead of breaking through it. Ruthard recognised the pattern only when the second flank was already wavering, and threw the reserve out of the rear ditch into a gap that had to close in minutes or not at all.

It became a close fight without a line, without a front, only groups of three or four men holding their own in what was left of the bearing points against equally small groups of ash-grey figures. Hartung lost two brothers of his platoon in that press, but with the remaining five tied down an entire assault squad of the Ash Sons until Reimbold pushed up out of the rear ditch with a dozen men and closed the cauldron between two fires. When the sun went down both flanks held again, but the emergency line had shrunk by forty metres, and nobody spoke that night of whether the original ditch should be retaken.

VI. What Remained While They Held

The weeks that followed had no shape that could be told as a single story, only a pattern: attack, setback, repair, attack. Bastion Torstein came to know the enemy the way you come to know a neighbour with whom you must share the same wall, their preferred hours, their patience, the small signs that preceded a new push.

Answald, deputy commander of Section West, walked the walkway in the night before the twenty-fourth of October and asked the question nobody before him had asked aloud in a hundred and sixty years, not out of doubt but out of sheer exhaustion: why Torstein was held at all, when the road behind it led only into the interior and the interior itself counted barely a million souls, measured against the dead the defence had already cost. Nobody answered him, because nobody was within earshot except the wind and the distant fires beyond the ditch. The next morning he stood on the same walkway, with the same duty, and the question did not come again, at least not aloud.

Diethelm spent every second night forty metres in front of the wall, under a tarpaulin rubbed with clay, counting the movements in the ash-grey camp beyond the crater line until he knew their reliefs as precisely as his own breathing: when they changed, which party grew careless when the rain set in, which officer walked the rounds in person. What he saw went to Ruthard every morning in a single terse sentence, and out of those sentences, strung together, there grew over the weeks a picture of the enemy more exact than any sensor report.

On the fourteenth of November Rickmers took a fragment in the upper arm, six hours before the end of his watch, and did not report it, on the grounds that a Wall Brother who left his position over a fragment had not understood the Load Test, that slow, three-day ritual with which every position was taken up and which had impressed on him that the individual served the line and not the other way round. Only when he collapsed as he came off duty did Gerwin see the wound, long since inflamed, and what he saw he did not like.

"That was stupid," said Gerwin, while he cleaned the wound, with more sharpness in his voice than he had intended.

"That was Torstein," said Rickmers through clenched teeth, and both of them knew that it was the same answer, only put differently, and that neither would be able to convince the other which of the two formulations was the right one.

Volkward, the Techmarine, spent those weeks between the sensor stations and the listening wells, because he was the only one who understood both languages, that of the machines and that of the stone, and he began to keep a register of his own, outside any reporting form: which sound corresponded to which action, which pattern preceded a withdrawal and which a new push. One evening in November he identified, from nine different sounds in only twenty-two minutes, not only a new demolition charge but also the approximate number of brothers laying it and how experienced they were in doing so, a calculation no textbook of the Builders Lodge had ever demanded and which from that day on was taken into it.

VII. Four Minutes

In the night before the twenty-second of November a second great attack wave broke through the outer ditch in Section East, deeper and faster than any forecast had allowed, and pressed towards the road that ran through the gate casemate, the same road at the end of which, twelve kilometres away, lay the settlement of Ilmenbrück, with two hundred and sixty thousand people who were asleep at that hour without knowing how close the war had come to their door.

Sigward stood in the command casemate when the report came that the section could fall in less than an hour, and before him lay two possibilities, both confirmed by the fleet above him and both executable within minutes: a convoy that could partially evacuate the settlement in the time remaining, or immediate orbital fire on the breaking-through formation, which would hold the section but make the road impassable for hours, while the Ash Sons, should they get through after all, could push on unhindered as far as Ilmenbrück without anybody warning them in time.

He had four minutes before the fleet needed an answer in order to be able to carry anything out at all.

He spent the first minute reading the situation map, every line, every red point. The second with the report from Section East, which grew worse with every second. In the third he was silent altogether, his hands flat on the map table, and nobody in the casemate dared interrupt him, although outside the noise of the battle came through the casemate walls like a second heartbeat. In the fourth he said, without any hesitation, as though the decision had long since made itself in the three silent minutes: "Convoy. At once. Orbital fire only when the last transports have reached the settlement boundary, not before."

"That leaves us no window for the section," said Ruthard, not as an objection, only as a statement of what that decision cost.

"I know." Sigward looked at him, without any relief in his face at how narrow it was, at how many Wall Brothers in that section would be standing alone in the next few minutes. "Wall Brothers hold positions. They do not hold a reckoning that weighs people against walls. If we ever did, Torstein would be nothing but stone, and a stone that is worth less to itself than people does not deserve to be held."

While the four minutes ran, Section East held by its own strength, without knowing of the decision in the command casemate: six Wall Brothers at an emergency line of overturned vehicles, holding every further breach with what they still had in ammunition and chainswords, while behind them, on the road, the first transports with sleep-drunk, frightened families from Ilmenbrück rolled out into the night. None of the six knew that their holding was buying the seconds the convoy needed in the end, and none of them lived to know that it had been enough.

The convoy reached Ilmenbrück with forty-two seconds to spare before the orbital fire turned Section East into a cratered landscape, and with it the entire formation that had broken through, together with six Wall Brothers who had covered the last transport and whose names got no oak tablet that night, because nothing was left of them that could have been recovered.

VIII. Sap-Work

What remained of the earth after the orbital fire had died away, Jann Kolde only told days later, when his listening wells under Section Centre reported a new sound: no longer a scraping, but the dull, regular knocking of demolition charges being placed deep beneath the gate casemate, there where the only road west ran, now that the way through Section East was closed, the only remaining way deep into the interior.

Volkward needed twenty-two minutes and nine different sounds to calculate the depth, the bearing and the approximate explosive force, and what he calculated pleased nobody: if the charge went off, not only the gate casemate would fall but a stretch of the wall beside it as well, at a place where the emergency line had not yet consolidated.

Hartung, who led the second platoon, heard the report, looked at the clock, which still showed ninety minutes to the next scheduled briefing, and made the decision without waiting for it: he sent his platoon into the rear part of the prospecting gallery, against the charge itself, instead of waiting on the surface to see whether it went off or not.

It was a decision that by the Chapter Rule belonged to nobody but the captain, and Hartung knew that precisely as he made it, at 7.50 on the thirteenth of December, with the same calm with which he had made every other decision in sixty years of service.

The platoon reached the charge nineteen minutes before the estimated detonation, in a tunnel too narrow for more than two men abreast, against a demolition party of the Ash Sons that was just as surprised as they were. What followed was not an engagement in the proper sense, only a close, dark wrestling with knives and bare fists, in a gallery in which no bolter could fire any more without endangering your own people, until the last Ash Son was dead and the charge, disarmed but still trembling, lay in Hartung's hands, the heart of the detonator torn out.

The fight in the gallery had known no light except the spark of blades and the brief white flash of a single pistol shot that one of the Ash Sons got off in the crush before a bayonet opened his throat under the helmet rim. Two Wall Brothers died in that narrow darkness, crushed between the bodies of the others, because in the gallery nobody could give way without dragging the next man with him, and for days afterwards the survivors carried the smell of the tunnel on them, which no wash water seemed able wholly to take away.

When Ruthard learned of the unauthorised decision, all he said about it was one sentence, before the assembled company, loud enough for everybody to hear: "Hartung saved the gate casemate today, against the Rule and against the clock. The Rule has no word for that. I think it should get one." Nobody contradicted him, and nobody who heard of it ever spoke again of the rule that had been broken by such a deed.

IX. Dhar'kesh Beneath the Wall

That same night, while Hartung's platoon was still in the gallery, Gerwin, the Apothecary of the Wall Brothers, found a figure among the fallen of Section Cauldron that did not belong to their own recovery parties. Ash-grey plate, kneeling over the body of a Wall Brother, an extraction tool already set to the neck plate, with the practised calm of a man who had done this work a thousand times.

"Away from him," said Gerwin, his voice colder than he had ever heard it in himself.

The Ash Son straightened up, without haste, and Gerwin recognised from the ornament of the helmet that he had the other side's Apothecary in front of him. "Dhar'kesh," said the figure, almost courteously, as though introducing himself at a gathering and not in the middle of a battle over a dead man. "I am taking what is of no further use to your brother anyway. His progenoid would be unusable in three hours regardless, without the cooling you do not have here."

"He is a brother of the Wall Brothers. Not a supply."

"Not for you." Dhar'kesh looked down at the dead man, with an expression Gerwin could not place at once, something that looked almost like envy, in a face that had shown nothing for a long time. "My line consists of eleven cylinders whose origin nobody remembers any more, raised over two hundred years, refilled again and again, diluted again and again. I have four hundred and twenty-seven Smelting-Ins behind me in service, and with each one what we are becomes a little thinner, a little less what it once was. Your brother carries gene-seed that has not been watered down in ten thousand years. If I do not take him, your rite will burn him to ash anyway, ash of no use to anybody, neither to you nor to us."

"Then he burns as what he was." Gerwin raised the reductor he carried for their own dead, whose progenoid the Wall Brothers used in their own quiet way and for no other purpose. "Not as goods for a Chapter that has forgotten where it came from."

They fought over the body, two Apothecaries whose blades were meant for healing and in that moment for nothing but refusal. Dhar'kesh was faster, with the cold precision of a man who knew bodies better than any surgeon, but Gerwin fought on his own ground, with his back to his own wall, and would not be pushed aside, however hard Dhar'kesh tried. Their blades met half a dozen times, metal on metal, until Gerwin drew a glancing cut across the other Apothecary's armour, deep enough to cause pain, not deep enough to decide anything, and it was that one hit that made Dhar'kesh pause and weigh whether the body was still worth that price, short and ugly, until Dhar'kesh withdrew, without the progenoid, deeper into the smoke of Section Cauldron, with one last sentence over his shoulder, as calm as before, as though the fight had not shaken him in the slightest: "We will come again, brother. For this one or another." Gerwin watched him go until the smoke had swallowed him completely, and carried the dead man back himself, in both arms, because he did not want to entrust him to anybody else.

X. Sef'ran Hesitates

Two nights later Brother Sef'ran of the Ash Sons found himself alone facing a wounded young Wall Brother, barely more than an aspirant, who had become separated from his platoon during a push and now sat with a shattered leg against the rubble of a collapsed bearing point, without a weapon, without any possibility of flight, his eyes wide open and nevertheless not begging for mercy.

In six hundred years of the Chapter, Sef'ran had been the first to ask the question of the nineteenth step of the Smelting-In rite, and that question had left something open in him that the other brothers did not know: a space in which he hesitated, where hesitation should have no place, where six hundred years of practice should long since have taught him to need none.

The young Wall Brother looked up at him, without begging for mercy, because the Chapter Rule of the Wall Brothers did not know that either, and without showing fear, although it stood plainly in his eyes. He said only one single sentence, with the last calm left to him, practised like a catechism you have heard a thousand times before you first need it yourself: "If you take me, you take nothing. We give nothing. That is the Rule."

Sef'ran stood over him for a long moment, his blade half raised, and thought of a word he did not understand himself, which ran through the history of his Chapter like a crack through rock, spoken by dying men who had never explained it, passed from mouth to mouth until nobody knew any more where it had begun. "Anje," he said quietly, more to himself than to the boy, who could not understand it and did not need to.

Sef'ran lowered the blade, not out of mercy, he would not have called it that himself, but because in that moment he no longer knew for whom he was still performing the Smelting-In, for the Chapter or only for the number in Dhar'kesh's book, which grew higher every year without anything having become less thin by it. He left the boy behind, alive, among the rubble, after handing him the field dressing he carried for his own brothers, a gesture neither of them would ever mention, and on his return reported only that the target section had been empty, a lie so plainly phrased that nobody questioned it.

It was the first lie he had spoken since his induction into the Chapter, and it cost him more than a truth ever would have, more than he could measure in that moment himself.

The following night Brother Ghal sought him out, in the narrow cell they had shared for weeks, and asked nothing, which was what Sef'ran feared most. He only said, with the same casualness with which he had once spoken the word "anje" twice under an overturned wagon, without anybody ever learning why, "Some sections are empty because there was nothing there. Some are empty because somebody decided they should be." He did not look at Sef'ran as he said it. Nothing more passed between them, and nothing more needed to.

XI. Dessert and Peat

Not every night of the siege was fire and gallery fighting. There were also the others, the quiet ones, in which a section found a few hours of rest and the Builders Lodge did what it had always done when stones were not moving: it looked after the living.

Wemmer, the Builders Lodge's cook, had learned in fourteen years on Ankerfels that a dessert was worth three times as much as a whole meal when the men you served it to had eaten nothing but field rations for days, and he held to that lesson on Torstein as well, with a stubbornness that had once even amused Ruthard. He baked, out of what the stores still yielded, small hard cakes of grain flour and thickened syrup, barely bigger than a fist, and carried them personally into the emergency lines, where the company crouched between two attacks.

"That is a waste of time we do not have," said Wiechert once, when he came upon him in Section Cauldron with the basket, while smoke was still rising in the distance.

"That is exactly the time we do have," Wemmer returned, "as long as nobody is shooting." He handed Wiechert a cake without waiting for an objection. "A man who knows there will be dessert again tomorrow holds a position differently from one who only knows that he is holding it."

Wiechert, who had begun as a mason and by now ran the peat cutting and the drystone work of the emergency lines, had learned in his third year how to cut peat with the Ilmeners, and that knowledge proved unexpectedly useful in the weeks of the siege: peat, damply tamped and pressed into bundles, damped fragments almost as well as sandbags and could be brought up faster when a wall had to grow faster than the regular material transports allowed. He showed it to the younger brothers of the Builders Lodge in a quiet hour, while Wemmer was still handing out his cakes, and neither of them recorded whose contribution did more in the end to hold the line, because in the Builders Lodge nobody kept such accounts.

XII. Diethelm's Shot

Diethelm had been studying the ash-grey formation for weeks, a little more precisely every night, until he knew which officer actually led the attacks, even though Tel'brand himself appeared only rarely in the foremost line. It was a champion of the Ash Sons, larger than the others, who personally led every second wave, with a blade that shone differently in the first light of dawn from those of his brothers, polished where their plate had long since gone dull and blackened.

On the morning of the seventy-first day, as a new wave formed up in the grey early light, Diethelm had already lain at his position for four hours, forty metres in front of the wall, under the clay-smeared tarpaulin, with a patience most men who did not know him would have taken for coldness. By now he knew the champion by his walk, by the way he held his head before he gave an order.

In the weeks before he had let three opportunities pass in which the champion had been briefly visible, because the angle had not been sure enough or because a piece of cover stood too close, and every time he had felt the disappointment of the waiting company behind him, without justifying the shot he did not take. A marksman who risked an unsure shot and missed betrayed his position for nothing. A marksman who waited stayed invisible until the one window came that did not close again.

He waited until the formation began to move, until the champion stepped to its head to lead it across the open ground, and fired a single shot, in the moment when an armour joint briefly opened as he strode out, a window that stood open for less than half a second.

The champion fell, mid-stride, and the formation behind him faltered for a heartbeat, that one heartbeat a well-led force normally does not need in order to go on, but this time it was enough: the prepared rolling barrage of the Wall Brothers out of Section Cauldron struck the faltering formation before it could re-form, and drove it back with heavy losses into the ditch it had come out of.

Diethelm stayed where he lay for a further two hours, until the dawn had fully given way, because a marksman who jumped up immediately after a shot was not a marksman but a dead man who did not yet know it. Only when the sun stood high enough for his movement to be lost in the general light did he withdraw, reported the kill with the same terse line with which he reported every other observation, and lay down to sleep without losing a word about the fact that he had just possibly removed the ablest officer on the other side below Tel'brand himself from the fight.

XIII. Ruthard against Tel'brand

On the ninetieth day of the siege Tel'brand personally led his last great storm, through the breach that weeks of attacks had torn in the outer ditch of Section Cauldron, with the entire remaining fighting strength of the Ash Sons behind him, as though the loss of the champion had taught him that he could spare himself no longer.

Ruthard met him on the inner rampart, where in the last days the Builders Lodge had raised a second, makeshift line out of broken masonry, peat bundles and everything else that could still be stacked. Two captains, two Chapters whose founding Legions had once stood side by side before the one lost itself and the other held, met with a clash of chainswords that for a moment seemed to drown out the rest of the battle's noise.

"You could have given us what we needed," said Tel'brand, his blade ready, his voice as calm as on the evening of the vox channel, as though the ninety days between had changed nothing in him. "Nobody would have noticed. One cylinder among thousands, nothing to you, everything to us."

"We would have noticed what we had become for it." Ruthard raised his chainsword. "That is the difference between holding and giving up, captain. It does not begin at the wall."

They fought as only two Astartes could fight who had both devoted their lives to the understanding of stone and position, every blow calculated, every evading step an answer to a question the other had just asked. There was no quick ending. There was only exhaustion, distributing itself evenly on both sides, while around them the last remnants of the Ash Sons broke against the second line and did not get through. Three times Tel'brand drove him back to the edge of the second line, where broken masonry gave way under their boots, and three times Ruthard caught himself, with the legs of a man who had spent half his life on positions that lost the ground beneath them. At the fourth attack he no longer gave way backwards but to the side, into a movement nobody taught on Ankerfels, because it came from no drill form but from fourteen weeks in which he had learned how a storming attack thought before it had thought itself through to the end.

Tel'brand parried the first blow out of this new direction, but not the second, and in the tiny window that opened between them Ruthard came, with a feint he had learned from Diethelm's endless reports on the enemy's movement patterns, under Tel'brand's guard and drove the blade into his armour, deep enough to strike, not deep enough to kill.

Tel'brand sank onto one knee, his hand on the wound, and looked up at Ruthard, without hatred. "So you really do hold."

"That is what we tried to say." Ruthard stepped back a pace, his blade still raised, but no longer lowered. "You can withdraw what is left of you. I hunt nobody who goes."

Tel'brand looked at him for a moment, as though searching for the lie in that offer, and found none. He gave the order to withdraw over the open channel, without encryption, so that the Wall Brothers heard it too, and the last Ash Sons still standing disengaged, step by step, without anybody from the second line following them.

XIV. The Last Day

The withdrawal of the Ash Sons itself took a further two days, as methodical as their attack had been, with a rearguard that defended every metre it gave up, until the last landing craft left the outer sensor boundary on the evening of the ninety-fourth day and disappeared into the Warp, without anybody on Torstein ever learning where to.

What remained was a bastion that hardly looked like the drawings in the Builders Lodge any more: Section East a cratered landscape, Section Cauldron pushed back to the inner emergency line, twenty-three brothers fallen by name, among them Rickmers, whose old fragment wound had become inflamed in the last weeks despite Gerwin's treatment, and Brammer, the foreman of the Builders Lodge, who died without knowing whether either of his two sons in the Chapter was still alive that day.

Onno Petke fell on the eighty-second day, shoring up a collapsing gallery that he would rather hold himself than lose the two comrades behind him, and there was nobody left to carve a tablet for him except the Builders Lodge itself, which did it together, in a single night, out of oak that he had felled himself years before, for a wood he had never wanted to see, without suspecting what the timber would one day be needed for.

Otwin, the Company Ensign, kept the Standing Book that last evening, as he had for forty years, five columns, one line every evening. In a hundred and forty-three standing reports for Bastion Torstein he had exactly one crossing-out, from the night of the twenty-second of November, in which the report from Section East forced him to change "fully manned" back to "not manned", before Sigward's decision saved the situation. That one line weighed more heavily than any other he had ever written, and in all the weeks since he had not once looked at it again.

The Builders Lodge began the repairs while the last rearguards of the Ash Sons were still leaving orbit: Wiechert and his parties tamped new peat ramparts into the broken sections, Jann Kolde had the listening wells checked one by one, because an enemy who had dug for so long might also have left charges behind that nobody had recovered, and Gerwin set up a second infirmary in the old granary of Section Centre, because the first had long since been too small for the number of wounded. It would take months before Bastion Torstein looked like the drawings in the Builders Lodge again, but on the morning after the Standing Book entry the first new course of wall already stood in Section East, three stones high, laid by men who had barely slept for fourteen weeks and who nevertheless did not want to wait until somebody ordered them to.

XV. The Standing Book

On the morning after the final departure Sigward assembled what was left of the company on the inner rampart. Making a speech was not the way of the Wall Brothers. He wanted to count: who stood, who was missing, who lay in the apothecarion and would get up again. Gerwin read out the names of the fallen one by one, slowly, without raising his voice, while the company kept silence.

Wemmer stood at the edge of the assembly, without a weapon, with the same hands that had baked cakes for fourteen weeks, and when Gerwin had finished it was Wemmer who was first to go back to his cooking place, because, as he said later, a company that has just counted its dead needs more than anything else something that tastes of before.

Then Otwin stepped forward, the Standing Book under his arm, and opened it at the last page, at the place where the column "condition" had stayed empty for fourteen weeks and three days, because you were not permitted to write that word as long as you did not yet know yourself whether it applied.

He dipped the pen, looked at Ruthard, who nodded, and wrote, in the same even hand with which he had written a hundred and forty-three reports before, the fourth of the four words that you were only permitted to write when you gave up a position and it was still there.

Held.

No cheering followed that word, only a nod that went from man to man through the assembled company, and then the return to work, because a position held was still a long way from a position repaired, and the Builders Lodge had already begun the rebuilding of Section East before the last Ash Son had left orbit.

XVI. The Wall-Stone

The Builders Lodge needed three weeks to break out of the held Section Cauldron the block that was to go back to Ankerfels, three metres deep out of the emergency line at which Tel'brand had fallen without dying. Jann Kolde supervised the recovery himself, with the same care with which he had listened at every listening well, and entered in the book of the Builders Lodge the four particulars every Wall Stone received: position, year, dimensions, weight.

It took a further six months before the block reached the Hall of Stones on Ankerfels and was walled in there, beside six hundred and twelve others that did not fit one another, without a single piece being permitted to be dressed, as the Chapter Rule had required since its founding. Ruthard walked through it himself, like every returning man, without stopping, without looking for a particular stone, as custom required, a hundred and twenty metres between two walls of twelve hundred years of war that nobody could read singly any more.

But he knew which stone it was, and that was enough.

Diethelm, who had taken the champion of the Ash Sons out of the fight with a single shot, was never officially decorated for it, because the Chapter Rule knew no decorations, only entries in the Standing Book, but Otwin found a line of his own for him, outside the five prescribed columns, at the edge of the page where nothing was supposed to stand: a single word, "seen", which everybody in the company understood without its ever having to be explained.

Of the Ash Sons nothing was ever heard again on Ankerfels, at least not directly, only a rumour, years later, from another Chapter on another frontier, about a renegade captain who refused an offer before it had even been spoken, with a single sentence: "Some walls take nothing."

What became of Sef'ran nobody on Ankerfels knew, and nobody there would have cared. But in another record, far from Torstein, there stood from then on one more name among those who had spoken the word "anje", without anybody knowing why, and one more place in the long list of what that word had accompanied since it was first spoken.