Editing Emperor's Nightmare (section)

===Organization===
[[File:ENChart2.jpg|thumb|The organizational breakdown of the Emperor's Nightmares.]]

:''See also: [[Forces of the Emperor's Nightmare]]''

;Chapter Master Randolphus
: The First and Only. Originally a Captain of the Nightmare's parent chapter, Randolphus assumed the position of Chapter Master when the Emperor's Nightmare was founded. He is still alive within a dreadnought sarcophagus, but his mind has been stolen by Tzeentchian sorcery, and the chapter invests great efforts to find and return it to him.

;The Wake
:The council of viziers that commands the chapter until such time as Randolphus' mind can be returned to him. It is nominally comprised of the two Lords Adjutant, the Chief Apothecary, Master of Sanctity, Chief Librarian, Master of the Forge and five of the Night Owls Venerable Dreadnoughts for a total of 11 voting members. However, meetings at full strength are so rare as to be worthy of note in the annals, since such a gathering is dependent upon all viziers being awake at the same time. Usually, Resting viziers are substituted for by trusted associates, though it has on occasion come to pass that so many viziers and associates were resting at the same time that marines further down the chain of command (though usually still of veteran rank) were called upon to fill the seats.

;Apothecaries : In addition to their normal duties they are primarily charged with keeping as many members of the chapter's circadian rhythms stable as possible. They must be able to recognize the signs of the Sleeplessness early on. The five or six Apothecary dreadnoughts in the chapter work in pairs to herd units of the Sleepless brothers into battle and carry heavy duty sedatives to subdue them should they turn on their own. Leading the Apothecarion is Chief Apothecary Eidelan. Eidelan is blessed within the Chapter, for his Catalepsean Node has not sustained any degradation. This means his circadian rhythm is like any other Space Marines', a subject of envy within the Emperor's Nightmare. However, rumours abound that Eidelan in fact envies his fellows, being unable to attain the heights of dexterity and awareness everyone else in his chapter can. This is said to be the reason why he is so intent on the Sleepless, and no one can doubt he bears an interest bordering on obsession with these tragic warriors.

[[File:Technomancer emperorsnightmare.jpg|thumb|A Chaplain of the Emperor's Nightmare with dreamcatcher charms.]]

;Chaplains : Considering the chapter the chaplains are actually pretty normal. They are responsible for carrying the chapter's relics into battle and for maintaining the Nightmares' ties to their homeworld and traditions. Unsurprisingly the light of the Astronomicon features heavily in their dogma.
;Librarians : Shepherds, guiding the dreamers. Loremasters and scryers. They project their minds into the immaterium to safeguard their dreamer brothers and to act as messengers between the real world and minds dreaming in the warp.
;Techmarines : In addition to normal duties they are tasked, for the chapter's safety, to halfway deconstruct each Waking Dead Dreadnought between battles. (These are stripped of their weaponry and power sources and are trapped within the calm, night-like blackness of the sarcophagus.)

[[File:Emperorsnightmare_small.png|thumb|This metallic quartered scheme is the generally accepted livery of Battlegroup Primus. (DOW2 colors: Primary: Abyssal Purple, Secondary: Shining Gold, Trim: Abyssal Purple, Accessory: Burnished Gold]]

;The Battlegroups
:The Emperor's Nightmare divide their strength into two battlegroups of similar structure but wildly different doctrine. Both consist of four companies organized after Codex patterns, though of more than standard strength. This deviation from the codex is accounted for by the practice of not counting Resting marines - though nominally active members of their company - against the company limit of 100 battle-brothers imposed by the Codex. Two company captains, one from each battlegroup, are elected Lord Adjutant, and serve to represent battlegroups in the Wake. In preparation for the event that any given marine may spontaneously fall asleep with only a minute or so's notice despite the apothecaries best predictions, every marine must be fully trained to cover for any of his battle brothers, even to the point of knowing how to land a Thunderhawk in an emergency and performing basic combat maneuvers with it. The techmarines even instruct their brothers in matters they otherwise wouldn't including a rotating cast of apprentices maintaining the chapter dreadnoughts. Additionally each marine takes care of his own wargear. Every fighting unit in the chapter is fully trained as a tactical squad, though they will don jump packs or otherwise re-equip themselves as the situation demands.
:;Battlegroup Primus: Lead by the Lord Adjutant Primus. Companies 2 through 5. The Dawn is the chapter's mighty fist and exemplifies the shock and awe tactics the chapter uses to great effect. There are four Battle companies in the Dawn, each with a nominal fighting strength of 130 tactical marines on the truly rare occasion that all the battle-brothers in the company are awake. Each company is given ten of the chapter's nigh-irreplaceable 45 suits of terminator armor. How these are used varies in each company with 2nd and 4th companies giving them to their sergeants and 3rd company assigning them to an elite team. In 5th company the right to don each suit is hotly contested and they are reassigned for each mission based on performance in the previous day's battles. If one does not constantly earn their terminator armor in 5th company, one does not keep it.

:::'''Second company''' - Solar Prominence

:::Motto: ''Adit Aurora Alata Ardens'' ("Here comes the dawn, upon wings of fire.")
:::Led by Captain Ambrose.

:::The second company almost exclusively deploy via drop pods, and usually deep into enemy territory. (Spear head type maneuvers.) 
:::Under Captain Ambrose's Leadership the second company have won many victories for the chapter. Most notably, the complete rout of WAAAGH Reddklaw and the defense of Hive Thaetus against elements of the word bearers.
:::However despite these victories, the sometimes rash/suicidal actions taken by Captain Ambrose worry some of the apothecaries, fearing that he may be transitioning to sleepless.
::Edit: Captain Ambrose has officially been diagnosed as Sleepless. He has been transferred to their ranks and his title, The Red Dawn, has been passed on to his chosen successor, Taheton Hector.
:;Battlegroup Secundus: Lead by the Lord Adjutant Secundus. Companies 6 through 9. The Dusk stands in stark contrast to Battlegroup Primus in that it follows a doctrine of stealth rather than shock. In this, the heritage of the Raven Guard doctrine can be seen as "breeding true". The Dusk is again divided into four companies, each with a nominal waking strength of 130 tactical marines. The Dusk oversee the large scale deployment of several of the chapter's Icelus dreadnoughts to engage in disruption, sabotage and guerrilla warfare techniques. Skill with the stalker boltgun and the Astartes sniper rifle are prized and the chapter boasts some of the finest marksmen in the Imperium. The remaining five suits of Terminator armor belonging to the chapter can be found here, generally reserved for an emergency strike force, rather than distributed among the stealth specialists of Secundus.

;Tenth Company
:The chapter's scouts. Nominally separate from either battlegroup, the chapter's scouts field along Secundus deployments more often than Primus.

;First Company
:Called "Night Owls", the first company is independent from the larger battlegroups, even though it is comprised of marines originally hailing from either. It is the organizational home of the chapter's dreadnoughts, of which there is currently a pool of fifty eight chassis, all but two of which are inhabited. Dreadnought chassis are most often permanently seconded to companies of Battlegroup Primus where they are repainted with company colors and organized into squads bearing codex approved devastator markings. The very oldest of the dreadnoughts remaining among the Night Owls often have spent so much time battling the forces of chaos awake as well as asleep that their prowess is no longer limited to either the Empyrean or the real world; these "August Dreamwalkers" possess great psychic potential and are greatly revered, not only for their age and valor.

;Sleepless
:Not included in the official roster are the Sleepless, those marines who are completely unable to sleep and have been driven insane. These warriors are not uncommon, but once their inability to find rest at all is realized by the Chapter, they are considered dead, stricken from the chapter's list of serving marines, with a scout promoted in their place. (Of course the apothecaries and chaplains keep an unofficial tally of how many Sleepless there are.) These tragic souls are organized into their own special assault squads and released ahead of the main battlegroup, so that in death they might find their well-deserved rest. Sleepless are overseen by pairs of specialist apothecary dreadnoughts, operating in tandem. In the event one of the dreadnoughts falls into slumber, the other can remain active. These overseers are outfitted with outsized narthecium as their close-combat weapons that deliver crippling doses of powerful tranquilizers and depressants. These are the only thing that can sedate the Sleepless, and only enough to pacify. The armor and equipment of the Sleepless is highly distinctive, with each marine embellishing his gear with intricate symbols and devices. These designs may be devotional, recreations of things the marine had seen (a particularly compelling star field, for instance), or incredibly intricate geometric patterns. Beyond this, the only modification their lucid brothers make is the addition of a simple white trim on their armour painted on, often by the Sleepless brother themselves, during the ritual funeral performed following diagnosis. It is an honour marking they share with the chapter's apothecaries in recognition of their unfortunate status, for they will remain in the care of the apothecarion until they die.

[[File:Icelusassault.jpg|thumb|Icelus Dreadnought Concept.]]

;Dreadnoughts
:There are three basic groups of dreadnoughts in the Emperor's Nightmare.
:; Specialist Dreadnoughts
:: A few Chaplain and Techmarine dreadnoughts, but mostly Apothecary dreadnoughts who carry out comparable duties for the Sleepless as the Blood Angels Chaplains do for their Death Company. They have specially made nartheciums that deliver usually-lethal doses of powerful sedatives and they care for their Sleepless brothers with the care and tenderness of a reverend scattering ashes on a grave.  This also includes the August Dreamwalkers in Iron, Librarian dreadnoughts who act as Guides when fighting upon the dreamscape.
:; Hellfire Dreadnoughts
:: Fulfilling the tactical role of devastators in other chapters. There are at least a few rifleman dreadnoughts per company, and a pool of other dreadnoughts at the command of each Lord Adjutant. The hellfire dreadnoughts are actually being permanently seconded to individual companies, and bear codex devastator squad markings and numbers as if they were part of that company. The hero inside is from that company and the dreadnought is only part of the Night Owls in the sense that this is where the sarcophagus came from.
:; The Waking Dead
::The Sleepless dreadnoughts. The node decay can overtake a Marine at any point in his life, and these tortured souls not only have to cope with the horrors of hyperawareness and fluidity, they have to do it through infrared autosenses, sound amplification devices and enhanced hydraulics. They see and experience a reality others cannot even begin to imagine. They are by far the most dangerous weapon the chapter has at its disposal but their insane, unpredictable intelligence, lost grasp on reality and obscene combat skill make them an extreme safety and security risk to the entire chapter. More than one strike cruiser has been destroyed entirely by a Sleepless dreadnought using their flawless knowledge from counting every rivet of the ship to evade recapture while slaughtering what it was convinced were vile traitors from the Word Bearers legion trying to take over the engine room...

:; [[Icelus Pattern Tactical Dreadnought]]s
:: These stealthy, lightweight dreadnoughts have been developed by the Nightmares from pre-Heresy tactical dreadnought patterns, and are specially adapted for infiltration and reconnaissance missions. Although they are deployed alongside all the chapter's marine companies, they are most at home in battlegroup Secundus.