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Space Marines & Primarchs · Heavy Weapon

Assault Cannon (Kheres & Absolution Patterns)

Six-barrelled rotary autocannon firing high-density depleted-deuterium and diamantine-tipped shells at up to three thousand rounds per minute, carried by Terminator squads, Dreadnoughts, and Land Raiders.

Adeptus Astartes (all Chapters)

Origin
Adeptus Astartes (all Chapters)
Characters
3
Units
7

Illustrated by Benny Woolbert (“Warhammer 40k Terminator Assault Cannon”, used with permission)

Lore & history

Across the blood-soaked battlefields of the forty-first millennium, few armaments command immediate recognition quite like the Assault Cannon (Kheres & Absolution Patterns). Associated foremost with the war-hosts of the Adeptus Astartes (all Chapters), this heavy weapon embodies the tactical doctrine, metallurgical mastery, and merciless lethality of its creators. Whether borne into the heart of a boarding action by legendary champions such as Bjorn the Fell-Handed, Azrael, Darnath Lysander or issued to frontline formations including Terminators, Deathwing Terminators, Dreadnought, Redemptor Dreadnought, Land Raider, the Assault Cannon (Kheres & Absolution Patterns) has decided the fate of void-stations, hive spires, and fortress-monasteries from the Segmentum Solar to the Eastern Fringe.

In canonical records preserved within Codex: Space Marines; Space Hulk (3rd–4th Ed.); Imperial Armour Vol. 2, the Assault Cannon (Kheres & Absolution Patterns) is never treated as a mere tool of war, but as a sacred or terrifying extension of its wielder's martial creed. Every surviving pattern—most notably the Mark VId Rotary, Heresy-Era Kheres Pattern & Heavy Onslaught Gatling—carries centuries of battle-honours, kill-tallies, and artificer modifications etched directly into its casing and load-bearing assemblies. When unleashed at close or medium quarters, its signature report and unmistakable silhouette—defined by six motorized rotary adamantine barrels, high-torque magnetic feed drum, and anti-jamming recoil-compensator cradle—serve both to rally allied formations and to shatter the morale of opposing infantry and armoured columns before the killing blow even lands.

Design, mechanism & battlefield effect

The internal engineering and battlefield operation of the Assault Cannon (Kheres & Absolution Patterns) rely upon an unforgiving marriage of exotic materials science and high-energy lethality. Constructed around six motorized rotary adamantine barrels, high-torque magnetic feed drum, and anti-jamming recoil-compensator cradle, the weapon channels immense destructive potential into a focused point of impact or terminal salvo. Upon activation, primary power conduits or symbiotic feeder assemblies draw directly from high-capacity micro-reactors, backpack generator cells, or warp-attuned cores, priming the striking assembly within milliseconds.

At the moment of engagement, the Assault Cannon (Kheres & Absolution Patterns) bypasses conventional ceramite, plasteel, and chitinous carapace by attacking the structural integrity of the target's armour at the molecular or sub-atomic level. Standard defensive countermeasures—including refractor fields, storm shields, and reinforced bulkhead plating—rapidly buckle under sustained fire or repeated blows. Because of the extreme thermal, gravimetric, or kinetic stresses generated during operation, only heavily augmented warriors, battlesuits, or elite veterans of Terminators, Deathwing Terminators, Dreadnought, Redemptor Dreadnought, Land Raider possess the physical resilience and neural-link calibration required to wield the Assault Cannon (Kheres & Absolution Patterns) without suffering catastrophic feedback.

Patterns, variants & doctrine

Over ten thousand years of attritional warfare, the Assault Cannon (Kheres & Absolution Patterns) has diverged into numerous regional, forge-world, and relic sub-patterns, foremost among them the Mark VId Rotary, Heresy-Era Kheres Pattern & Heavy Onslaught Gatling. Master-crafted examples forged for commanders such as Bjorn the Fell-Handed, Azrael, Darnath Lysander incorporate bespoke targeting augurs, reinforced disruption coils, or ancient archaeotech components that elevate their armour-penetration and reliability far beyond standard munitorum or warband issue.

Specialist formations—particularly Terminators, Deathwing Terminators, Dreadnought, Redemptor Dreadnought, Land Raider—further adapt the Assault Cannon (Kheres & Absolution Patterns) to suit extreme combat environments, from zero-gravity Space Hulk boarding corridors to ash-choked siege trenches. These field variants trade bulk or ammunition capacity for overcharged output, twin-linked mounting arrays, or integrated secondary weapons, ensuring that no enemy fortification or monstrous bio-form remains impervious.

Across ten millennia of total war, the Assault Cannon (Kheres & Absolution Patterns) (Heavy Weapon) has spawned numerous classified sub-patterns tailored to the operational theatres of the Adeptus Astartes (all Chapters). Foremost among these are the Mark VId Rotary, Heresy-Era Kheres Pattern & Heavy Onslaught Gatling, which modify the standard six motorized rotary adamantine barrels, high-torque magnetic feed drum, and anti-jamming recoil-compensator cradle to maximise terminal damage against Terminator plate, Dreadnought sarcophagi, and super-heavy war-engines. Elite champions (Bjorn the Fell-Handed, Azrael, Darnath Lysander) and specialist squads (Terminators, Deathwing Terminators, Dreadnought, Redemptor Dreadnought, Land Raider) routinely pair these variants with advanced auspex targeters or psychic synchronization nodes.

Forge World Variations, Internal Mechanics & Artificer Visuals

Within the sealed armouries, forge-fanes, and bio-crucibles that sustain the Adeptus Astartes (all Chapters), the fabrication and maintenance of the Assault Cannon (Kheres & Absolution Patterns) demand the highest tier of craft. Every visual and mechanical detail of the weapon—specifically its six motorized rotary adamantine barrels, high-torque magnetic feed drum, and anti-jamming recoil-compensator cradle—is engineered to withstand extreme thermal, kinetic, and warp-borne stress. On the tabletop and in high-detail fan art, the Assault Cannon (Kheres & Absolution Patterns) is immediately identifiable by its distinctive profile (Mark VId Rotary, Heresy-Era Kheres Pattern & Heavy Onslaught Gatling), heavy weathering, and the unmistakable glow or mechanical menace of its active assembly when wielded by Terminators, Deathwing Terminators, Dreadnought, Redemptor Dreadnought, Land Raider.

Notable patterns & relic examples

  • Mark VId Rotary: The premier canonical pattern of the Assault Cannon (Kheres & Absolution Patterns), renowned across the battlezones documented in Codex: Space Marines; Space Hulk (3rd–4th Ed.); Imperial Armour Vol. 2 for its unmatched lethality against heavy power armour and armoured vehicles.
  • Artificer / Relic Loadouts of Bjorn the Fell-Handed: Custom-wrought exemplar of the Assault Cannon (Kheres & Absolution Patterns) featuring reinforced six motorized rotary adamantine barrels, high-torque magnetic feed drum, and anti-jamming recoil-compensator cradle and centuries of recorded battlefield kills.
  • Vanguard & Siege Issue (Terminators): Frontline configuration engineered for sustained high-intensity engagements, boarding actions, and bunker-clearing assaults.
  • Master-Crafted Variant (Heavy Onslaught Gatling): Specialized sub-pattern prized by veteran cadres of the Adeptus Astartes (all Chapters) for its superior armour-shearing output and resilience under fire.

Wielded & Fielded By

Characters (3)

Units (7)

Related weapons & vehicles

Primary Faction

Adeptus Astartes (all Chapters)

Further reading

Lexicanum · Warhammer 40k Wiki