Imperial Agents army rules, detachment abilities, stratagems and lore for Warhammer 40k, with links to the full unit datasheet table.
The Lex Imperialis, known also as the Dictates Imperialis or simply "Imperial Law" in Low Gothic, is the civil and criminal code of the Imperium of Man which consists of a vast body of laws and codes that have been compiled over ten Terran millennia. The Lex Imperialis is primarily enforced by the Adeptus Arbites and the Inquisition.
Believed to be the word of the Emperor Himself, for ten thousand Terran years the Lex Imperialis has held the balance between the Imperium's forces, much of it actually derived from the original decrees of the Emperor during the Great Crusade and the precepts of the first lord commander of the Imperium, the Ultramarines Primarch Roboute Guilliman, after the Horus Heresy during the Time of Rebirth.
Following the Siege of Terra, when the Emperor sustained mortal wounds during His final confrontation with the Warmaster Horus aboard his flagship the Vengeful Spirit and His subsequent internment within the Golden Throne, Guilliman also assumed the role of Imperial Regent.
It was he who imposed the Codex Astartes upon his brothers, which saw the sundering of the Legiones Astartes into the smaller, thousand-man Chapters of the Adeptus Astartes. This conciliatory gesture helped to keep the peace between the Space Marines and the Adeptus Terra.
And it was Guilliman, in consultation with the great Adeptus Custodes Captain-General Constantin Valdor, who issued the Edict of Restraint, under which the Custodian Guard were expressly enjoined to remain on Terra as guardians of the Enthroned Emperor until the birth of the Great Rift and the start of the Era Indomitus ten thousand standard years later led them to take a more active role in Imperial affairs once more.
The laws of the Imperium are upheld by the Adeptus Arbites, the Imperial adepta that serves as the galactic police force of the Imperium of Man, responsible for enforcing Imperial Law on all Human-settled worlds.
To aid their investigations, most Arbites Precinct Fortresses boast a cogitator stack containing a massively abridged version of just a portion of those judgements and precedents that commonly fall under the purview of the local Arbitrators. These rulings by segmentae Judges, High Marshals and even the Lords Marshal themselves, are designed to expedite the work of an individual Arbitrator.
This massive collection of Imperial laws, rulings and judgements alludes more literally to the Book of Judgement. Of course, the entire body of the law is vastly greater than a single volume; no individual could ever comprehend more than a tiny fraction. It has been painstakingly collated over the millennia, and includes the words of the Emperor Himself and every decree and ruling ever passed by the High Lords of Terra.
The most ancient articles are written on crumbling parchments, inscribed in unknown tongues by the nameless functionaries of a forgotten age. Every day a hundred new volumes of encoded holoscript and hand-illuminated lettering are added. Volume upon volume sits upon the endless rows of ornate bookcases that fill the Hall of Judgement on Terra.
Every row is home to ten thousand volumes, the shelves soaring a hundred metres up towards the vaulted ceilings. Over the ages, the Hall has been expanded and extended many times, so that it is now an entire complex covering many acres, with kilometres of corridors, levels, and rooms.
Scholars, scribes, and law lords pace the time-worn marble floors, while above their heads, on the narrow gantries and ladders that cover the shelf stacks like a spider's web, crawl legal assistants and low-ranking functionaries, searching through the detritus of judgement for solar weeks and months at a time to find just a single reference.
Every Adeptus Arbites Judge, at some point in their career, attempts a pilgrimage to the Hall of Judgement, there to study the full intricacies of the law. Many spend long Terran years there, for the most heinous, subtle, or far-reaching crimes often require a lengthy process of research to pass judgement.
While the Dictates Imperialis are extensive, the huge volume of prior cases and sometimes contradictory rulings can make it difficult to determine the correct decision. In especially complex cases, it may take standard centuries to reach an outcome -- a Judge may spend their entire life deliberating, scrutinising, and trying to fathom out the issues, only to pass their work on, unfinished, for others to continue.
Millennia later, though the accused are long dead, a ruling is finally made and justice must be meted out upon the distant descendants and those obscurely associated with the original transgressor.
The Imperium of Man is ultimately a theocracy, and although the Arbites wield and police temporal authority, religious concepts make up the bedrock of Imperial Law. The Lex Imperialis holds that the God-Emperor rightfully expects service and obedience from every Human being in the galaxy, and that within the Imperium that expectation is made manifest through the scripture of His laws.
To break the Lex Imperialis is not only to disobey a secular law of Humanity's galactic government, it is to violate the immaculate and divine moral order those laws set out as the expressed desire of the god of Humanity.
The Inquisition is another Imperial organisation which is responsible for upholding the tenets (the spirit if not the letter) of the Lex Imperialis. This secretive organisation exists outside the standard administrative hierarchy of the Imperium of Man and the Adeptus Terra.
The Inquisition acts as the secret police force of the Imperium, hunting down any and all of the myriad threats to the stability of the God-Emperor's realm, from the corruption caused by the forces of Chaos, Heretics, mutants and rebels, to assaults from vicious alien species.
However, the agents of the Inquisition are not collectively dictated or indoctrinated in any specific or cohesive way to carry out the performance of their duties, for it is their individuality, strength of mind and belief, and sense of personal responsibility which enables them to perform the dire tasks that are asked of them.
To further complicate matters, the Inquisition is divided into various factions of two broad camps. There are those traditionally dubbed "Puritans," and the factions that are referred to as "Radicals."
Puritans uphold the law and dictates of the Emperor to the letter, as enforced upon the populace and servants of the Emperor at large where possible. It is they who uphold the widespread beliefs that permeate the organisations of the Imperium, and can be said to adhere to the traditional religious values as preached by the Ecclesiarchy and enshrined at the heart of Imperial Law.
Radicals, in their favoured positions as Inquisitors, feel they are free to enforce the spirit and intent of the Emperor's judgements, and it can be truly said that they see the methods they employ to be secondary to the execution of their duties and the achievement of their goals. They would be considered Heretics by the vast majority of Imperial citizens for their behaviour, but some Inquisitor Lords, as more knowledgeable and wiser observers, can see there are sometimes powerful arguments to support the Radicals' views and methodology.
In either case, extremism of one type or another must always be closely watched by Arbitrators, lest it turn to self-destructive obsession that is detrimental to the enforcement of the true Imperial Law.
Lore excerpt from Warhammer 40k Wiki on Fandom, available under CC BY-SA 3.0.
29 Imperial Agents datasheets on the current roster, each with its points, model statistics, keywords and abilities.
17 Imperial Agents datasheets that are no longer part of the current army roster. They are kept for reference and for players whose collections still contain the models.