Zahariel sketched another quick bow, and, lest he be tempted to speak further, he reached forward swiftly and switched off the recorder. Silence fell in the small office, broken only by the whir of the 'scriptor's logic engines and the murmur of voices in the adjoining operations centre. Sighing faintly, the young Librarian turned away from the machine and surveyed the cramped, neatly-kept space, with its polished grey deskcum-hololith unit and neat stacks of message cores containing status reports on everything from training schedules to munition production quotas. Beyond the desk, a tall, narrow window looked out past the Tower of Angels onto the southern sector of the Legion's vast sprawl of armouries, barracks and training grounds. Tall spires rose out of the late-afternoon smog navigation hazard lights blinking red and green through the haze. He looked out at the bustling activity, the energetic industry of war, and wondered what had become of old Master Remiel.

There was a clatter of gears and the 'scriptor ejected the memory core. Zahariel plucked the small cylinder carefully from the socket and slipped it onto an ornate brass carrying tube marked with the heraldry of the Legion. Checking his internal chrono, he saw that he had just enough time to reach the detachment before they left for the embarkation field. He keyed his vox-bead and summoned a transport, then drew up the hood of his surplice and headed for the lifts on the opposite side of the operations centre. A sense of foreboding dogged his steps as he entered the lift and descended into the depths of the great mountain.

Zahariel couldn't say why the years had started to weigh on him of late. Most of the last half-century had passed swiftly indeed, lost in a whirlwind of hard work and seemingly endless iterations of recruitment strategies, training schemes and industrial expansion. Luther had seen at once that it wouldn't be enough to simply accelerate the pace of training; fulfilling the primarch's stated objectives demanded the creation of an enormous support structure that stretched across the entire planet. It was a herculean task, and at first Zahariel told himself that it was an honour that Jonson had chosen them for it.

Luther involved himself in every aspect of planetary administration, from tithe structures to industrial and arcology construction, and Zahariel was drawn along in his wake. Luther depended on him more and more, leaving him to make decisions that affected the lives of tens of millions of people each day. At first, the sheer weight of his responsibilities horrified him. But he summoned up his courage and rose to the occasion, determined to redeem himself in the primarch's eyes. Caliban's forests dwindled, replaced by mines, refineries and industrial sprawls. Huge arcologies rose like man-made mountains across the landscape as the planet's population swelled. Civilization spread across the globe, and the ranks of the Legion increased as Luther found ways to reduce the training cycle from eight years to only two. Meanwhile, reports of Jonson's exploits made their way back to Caliban, swelling their hearts with pride as the Dark Angels marched from one victory to the next. Transport ships from hundreds of distant worlds carried battle honours and war trophies back to Aldurukh, testifying to the valour of the primarch and the Legion's fighting chapters. The members of the training cadre admired each and every token sent back by their brothers and made comradely boasts of how they would exceed them all when Jonson summoned them back to the fighting.

Yet the decades passed, and no summons came. Jonson had never returned to Caliban; two planned visits had been cancelled at the last moment, citing new orders from the Emperor or unexpected developments in the current campaign. With each passing year, Luther's promise to the cadre in the castle courtyard sounded increasingly hollow, but not a warrior among them faulted him for it. If anything, their loyalty to Luther had increased during their exile. He shared their burdens and praised their successes, inspiring them by virtue of hard work, humility and personal charisma. Though they would deny it if asked, Zahariel believed that many of his brothers owed more loyalty to Luther than they did their distant primarch, and that worried him more and more as time went by.

It was only in more private moments, travelling across Caliban on manufactory inspections or working long hours alongside Luther in the Grand Master's sanctum, that Zahariel saw the turmoil in the great man's eyes.

News took a long time to reach Caliban these days, as the expeditionary fleets advanced farther and farther across the galaxy. Transports laden with plunder and trophies had grown less and less frequent of late. Then, recently, they'd received the news that the Emperor had named Horus Lupercal his Warmaster and left the crusading Legions to return to Terra. At first, Luther had hoped to keep the news quiet, but that had been folly. Before long all of their battle brothers had been talking about what had happened, and what it meant for them.

None of them were fools. They could see that the Great Crusade was entering into its final phases, and their last chance for glory was slipping away forever.

After several long minutes the lift deposited Zahariel at the base of the mountain, amidst the Legion's cavernous vehicle assembly areas. Plasma torches hissed and sputtered as Techmarines and servitors laboured to repair severely damaged Rhinos and Predator tanks sent back to Caliban from the front lines. No sooner had he stepped from the lift chamber than a four-wheeled personal transport rolled smoothly out of the vehicle pool and stopped beside the Librarian. He stepped into the open-topped passenger compartment, large enough to accommodate two Astartes in full armour. 'Sector forty-seven, training chapter five, main assembly grounds,' he ordered the servitor in the driver's compartment, and the transport set off at once, gathering speed as it made for one of the cavern's transit tunnels.

Zahariel's thoughts wandered as they sped past ranks of armoured personnel carriers, tanks and assault vehicles. He turned the memory core over and over in his hands, wondering at the unease that lingered in the recesses of his mind. Not even Israfael's meditative techniques had managed to blunt the sense of foreboding he felt. It was like a splinter beneath the skin, reminding him painfully of its presence and defying every attempt to pluck it out.

He could not say why it was so important for Luther to return to Jonson's side. They had all borne their exile with stoicism and dedication to duty, as any Astartes would, and Luther more than most. Of course, Zahariel knew why; the Legion's second-in-command was seeking redemption for what he'd nearly done aboard the Invincible Reason. Luther had discovered the bomb that the Saroshi delegation had smuggled onboard the Dark Angels' battle barge and had done nothing about it. For a brief time he'd let his jealousy of Lion El'Jonson's achievements overcome his better nature, but at the last moment he'd come to his senses and tried to make things right. He and Zahariel had nearly died disposing of the Saroshi bomb, but somehow the primarch suspected Luther's earlier lapse and had exiled him to Caliban. Now Luther worked to extirpate his guilt, but his efforts went unnoticed.

Yet what other choice did Luther have? Even if he wanted to defy Jonson's wishes, what options did he have? A demand for a fair accounting and a return to the front lines? To do that he would have to leave Caliban and seek out the primarch, in direct violation of Jonson's orders, and that meant outright rebellion. Luther would never countenance such a thing. It was inconceivable.

But if Jonson did nothing - if he let these loyal warriors sit here while the Crusade came to a close, it would leave a scar within their brotherhood that would never truly heal. Such wounds tended to fester over time, until the entire body became imperilled. It had happened on Caliban all the time, back in the old days.