Tome Keepers - M41 - Time of Ending: A Diamond in the Rough (Unknown Date.M41) - The Trial of Pages yielded disappointing results, producing just a single aspirant. The boy was named Nasiem of House Tergu.Awakening of Salax (748.M41) - In 748.M41, the astropathic choir on Istrouma received a scrambled message from the Adeptus Mechanicus Mining World of Salax on the outskirts of the Hyrakii Deeps. Suspecting an Ork invasion, a Tome Keepers task force arrived at Salax only to find the entire planet scoured of Human life. More troubling was that there were no tell-tale signs of Ork activity. Making planetfall near the mining facility, the Tome Keepers discovered signs of battle, but none like they had ever recorded before. Whole segments of the Mechanicus Research Station appeared to have been shorn off, the bare metal shining in the sun. Discarded tools, weapons and equipment lay everywhere, neatly bisected. Of the tech-priests there was no sign. As Chapter serfs began documenting the scene, Captain Ilunae led the task force into the heart of the mountain beneath the facility. As they approached the bottom of the access tunnels, a swarm of metallic creatures burst from the darkness to engulf the Space Marines. They were soon joined by far larger constructs that materialised through solid rock, their bladed limbs slicing easily through the power armour of Ilunae's troops. Despite the sudden assault, the Tome Keepers dispatched their foes and pushed on into the tunnel. What they found inside was not a series of caverns, but a Necron tomb complex, the walls lined with row upon row of stasis crypts. Necron Immortals were the first to awaken. Facing an unknown enemy, Ilunae shouted "Third Hephax" over the vox -- a battle cant that every Tome Keeper present knew by rote. As the Tactical Marines advanced fearlessly towards the enemy, bolters blazing, the company's Assault Marines skirted the flanks to come upon the enemy from behind. Chainswords screamed and shuddered as they smashed into the metal warriors, while power weapons sliced through the Necrons far more easily. As Ilunae joined the fighting, his Devastator Marines planted Melta Bombs around the complex before leading the retreat. The Tome Keepers fell back to the surface in good order as the Necron complex detonated. And so did the Tome Keepers record their first engagement with the Necrons of the Thokt Dynasty -- the beginning of a war that would last over two hundred standard years.Constantinus Iconoclasm (746-759.M41) - The Tome Keepers were dispatched to Nova Terra once again, where they joined the Iron Knights Chapter in the pacification of a rebellion led by the Renegade Constantinus, formerly of the Sons of Guilliman Chapter. So great was the former Space Marine's heresy that the entire sector was eventually plunged into open war for thirteen standard years.War in the Hyrakii Deeps (Unknown Date.M41) - Having eradicated the Orks in the Hyrakii Deeps, the Necrons of the Thokt Dynasty began attacking Imperial worlds. The Tome Keepers' 3rd, 4th and 9th Companies joined the Skitarii Legions of Stygies VIII and the Titans of the Legio Honorum in defending them. During this time, the Chapter suffered great losses, including several strike cruisers and a large number of armoured vehicles. Despite repeated requests for aid, the Tome Keepers and Stygians were left to prosecute the war on their own. The Necrons, relentless in their pursuit of reconquest, continued the expansion of their empire to this day.13th Black Crusade (ca. 999.M41) - Abaddon launched his 13th Black Crusade. Chapter Master Saargon bal Zakir led every warrior he could spare from his depleted Chapter towards the Eye of Terror in a bid to aid the Imperial forces. His fleet of ships arrived too late to join the war around Cadia, but aided in the defence of Chinchare and Agripinaa. More than one hundred battle-brothers and almost a score of battle tanks were lost defending the Forge World of Agripinaa, while those fighting on Chinchare were virtually wiped out by Daemons of Nurgle. Though these losses were a severe blow to the Chapter, many more worlds would have fallen without the Tome Keepers' intervention.Birth of the Great Rift (ca. 999.M41) - As the Noctis Aeterna following the birth of the Great Rift plunged the galaxy into darkness, the Somnolent Seers of Istrouma began to record the strange dreams experienced by the planets' inhabitants. Thousands of disturbing accounts were recorded before the Librarians of the Tome Keepers realised the peril and intervened. The dream diaries were gathered up and burned, though it is rumoured that some were saved from the flames. As the pyres burned away to ash, a great scar -- the Cicatrix Maledictum -- could be seen splitting the galaxy.Night of a Thousand Rebellions (999.M41) - Whole swathes of the Segmentum Pacificus fell to insurrection as Chaos Cults sprang up on scores of key worlds. Captain Aneser led the Tome Keepers' under-strength 5th Company to Kaillic VI, which had been taken over by the Slaaneshi Pleasure Cult of Vorlak the Everblind. A swift Drop Pod assault by the Tome Keepers made short work of the cult hierarchy, but the battle was far from over. Guided by the scent of ecstatic death, Daemonettes and Fiends of Slaanesh glid through the gossamer-thin veil between worlds and assailed the Tome Keepers forces. Though the Warp rift was sealed and the Daemons banished, over forty Tome Keepers were slain, Captain Aneser among them.A Light in Dark Times (ca. 999.M41) - Rumours reached the Tome Keepers that Roboute Guilliman -- primarch of the Ultramarines and their ancestral primogenitor -- had been reborn on Macragge. Chapter Master Saargon sought confirmation from Holy Terra, but no answer was forthcoming.Torchbearers (ca. 999.M41) - A small fleet of Imperial starships serving as a Torchbearers force of the Indomitus Crusade under the command of Shield-Captain Jasek of the Adeptus Custodes arrived at Istrouma. Jasek demanded to meet with the Chapter Master, but Captain Abonidas, the Tome Keepers' Master of Recruits, welcomed the visitors in Saargon's stead. Upon arrival at the fortress-monastery, Jasek proclaimed that the Chapter was to be reinforced and that a tribute of new gene-seed was to be received. The meeting lasted less than one solar hour. Jasek departed, leaving behind one hundred and twenty Primaris Space Marines drawn from the Greyshields, a batch of newly modified gene-seed and a host of medicae and Adeptus Mechanicus technical staff so that the Tome Keepers could begin to raise their own forces of Primaris Marines.The Great Reordering (ca. 999.M41) - Upon his return to Istrouma, Chapter Master Saargon welcomed the new battle-brothers with open arms, though he found the lack of information surrounding their arrival curious. The Chapter was reorganised to accommodate the new Greyshield battle-brothers. The majority of the Chapter's existing Firstborn warriors were elevated to the 1st and 2nd Companies, with the 3rd and 4th Companies taking the bulk of the Primaris Marine draftees. The Chapter's Apothecaries trialed the new Primaris gene-seed on the first batch of novitiates before offering existing battle-brothers the chance to cross the Rubicon Primaris and ascend to the new status. They volunteered to do so unanimously but, fearful of losing many of the Chapter's Veterans to the unknown process, Chapter Master Saargon ordered caution. The newly promoted Captain Nasiem bal Tergu was the first to undergo the dangerous procedure and the first ascended Primaris Marine of the Chapter.