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"Thus do we invoke the Machine God. Thus do we make whole that which was sundered."

— From the Hymn of Reforging

A Master of the Forge equipped with a Servo-Harness.

The Master of the Forge is a Codex Astartes-compliant Space Marine Chapter's most senior Techmarine, charged with the maintenance of the Chapter's fleet of armoured fighting vehicles, such as Rhinos, Land Raiders and Predators.

His knowledge of the arcane sciences has been refined over centuries of service, and rivals that of the senior tech-priests of the Adeptus Mechanicus of Mars.

A Master of the Forge oversees all of the Chapter's Techmarines and the Chapter Armoury. He is the chief engineer and weaponsmith of the Chapter.

The Master of the Forge is so skilled that he can tell what is wrong with a vehicle's Machine Spirit at but a glance.

Keeper of his Chapter's most ancient and treasured arcane secrets, he is the only one with the required skills to rouse the most ancient Dreadnoughts from their slumber, or operate potent wargear whose origin predates that of his Chapter.


Such skills conspire to make the Master of the Forge something of an outcast in most Space Marine Chapters. Though he is always part of the Chapter Council, the Master of the Forge is an outsider to all save his subordinate Techmarines, whose company is shunned in all matters save those that pertain to his beloved mechanicals.

In addition, to his Mechanicus "brethren", a Master of the Forge is often seen as the worst kind of Heretek, loyal to the Quest for Knowledge in name only, a warrior who does not hesitate to bend and adapt a Machine Spirit to his needs instead of carefully entreating and revering it as the Cult Mechanicus prescribes.

While often excessive, there is a core of truth in the Mechanicus' accusations, for a Master of the Forge is first and formost a Space Marine, a warrior of the Emperor tasked with ensuring that the Astartes in his care always have the means to wage war at their disposal. Few Masters of the Forge hesitate to modify or even completely overhaul a weapon or vehicle to better fit their Chapter's need, to the dismay and outrage of the more conservative Tech-priests.

New patterns of existing vehicles developed by a Master of the Forge are often grudgingly accepted and blessed by the Mechanicus only after painstakingly slow and lengthy examinations, when they are accepted at all. Some Masters of the Forge, tired of waiting for an unrequired approval from dogmatic non-combatants, have simply spread the specifications of their craft to their fellows of other Chapters, bypassing the Mechanicus entirely, which has only served to stress and antagonize the relationship between Astartes and Mechanicus further.

Not all Space Marine Chapters treat their Master of the Forge in this way. Some, such as the Mentors, the Praetors of Orpheus and the Astral Knights, embrace the dwindling advanced technologies of Mankind without the usual superstition and, in the case of the Iron Hands, with an enthusiasm nearly matching the Mechanicus. In these Chapters, the Master of the Forge is a personage honoured no less than the Chapter Master himself.

Such cases are not common among Astartes. Indeed, for one Chapter to embrace the vision and purpose of a Master of the Forge is to invite suspicion from many of its more conventional brothers. In addition to his responsibilities to maintain the Chapter Armoury, a Master of the Forge is also tasked with the conservation of any arcane technological artefacts to which his Chapter is heir. The oldest and most famous Astartes Chapters have many such technological wonders from the time before the Horus Heresy locked within their Armoury's vaults.

Like the other Techmarines who serve under him, the Master of the Forge is equipped with powerful bionic Mechadendrites called Servo-Arms that can be used for battlefield repairs or even put to use as another weapon. Masters of the Forge also sometimes wield an ancient pre-Heresy weapon called a Conversion Beamer, whose projectors fire a beam of anti-matter that induces a controlled subatomic reaction in the target, converting its mass into energy. The further away the target, the more deadly the blast, as the beam has time to grow in power.

Variant Master of the Forges

  • Master of the Rock - Most Space Marine Chapters have a Master of the Forge; the most senior Techmarine. With deep understanding of the arcane sciences refined over many years of experience, the Master of the Forge is comparable to a Tech-priest of the Adeptus Mechanicus. The Dark Angels Chapter has a similar role, known as the Master of the Rock, although there is an ominous difference. Upon ascending to the honoured position, the Master of the Rock follows his predecessors by being permanently wired into the control nave of machine banks located deep within the Chapter's asteroid base known as The Rock. It is his solemn duty to placate the most important Machine Spirits, directing the maintenance of the engines and Warp-Drive that allow the Dark Angels' enormous mobile asteroid to travel the galaxy. It is his mind alone that perceives the workings of the force field that still shields the asteroid base and maintains its atmospheric integrity. The previous Masters, whose fleshly bodies have withered, are left in place, their mechanical upgrades still working while bones fall in dusty heaps below. Eventually, they will be collected for display in The Rock's Alcoves of Honour. Because of their dual allegiance to the Chapter and the Adeptus Mechanicus, Dark Angels Techmarines are never inducted into the Deathwing. This includes the Master of the Rock; he is privy only to the secrets of their asteroid base and its hoard of ancient technology, and not to the truths of the Chapter's broader mysteries.

Notable Master of the Forges

  • Master of the Forge Argos - Argos is the current Master of the Forge of the Salamanders Chapter. As a Scout Marine, Brother Argos fought alongside Brother Elysius, (later to become a Chaplain, and bearer of Vulkan's Sigil) in an action to purge a Genestealer brood. During the initial hunting, in which the Scouts were to tag a Genestealer, the squad was ambushed by their prey. Slaying one Scout, and knocking Elysius to the floor, the Genestealer prepared to spray acid at Elysius. However, Brother Argos, seeing the peril Elysius was in, rushed into the line of fire and subsequently had a portion of his face destroyed by acid. After Elysius killed the Genestealer, compromising the mission, the pair opted to continue, despite Argos' injuries, to eradicate the brood nest themselves. In later years, as a recently inducted Techmarine, Argos again suffered facial wounds at the hands of Genestealers whilst serving alongside the 2nd Company in the Purging of the Moons of Ymgarl. As a result of this second burning, Argos requiring the bionic rebuilding of half of his face. Argos' bionic eye is engraved with the image of a snarling Firedrake. After serving in the 2nd Company of the Salamanders, Argos eventually ascended to his current position as the Salamanders' Master of the Forge.
  • Iron Priest Harl Greyweaver - Harl Greyweaver is an Iron Priest of the Space Wolves Chapter who has been seconded to the elite xenos-hunting Deathwatch -- the Chamber Militant of the Ordo Xenos. He has been the Forge Master of Watch Fortress Erioch since his predecessor answered a summons to serve the Achilus Crusade a decade ago. He is notoriously intolerant of other Chapter's brands of tech-craft, but his efficacy in conjuring the tools of war is so great that no one has yet been able to oust him.
  • Forge Master Sebastion - Sebastion serves as Master of the Forge of the Scythes of the Emperor after the fall of Sotha. He is charged with the training of prospective Techmarines as the Chapter is slowly rebuilt. He had identified Neophyte Narro, a member of Sergeant Tiresias' 21st Salvation Team, as a potential candidate, recognising his natural affinity for practical problem-solving and had begun his early training in the mysteries of the Omnissiah before his untimely death aboard a Tyranid Hive Ship. He recently accepted Neophyte Bokari for an apprenticeship as a potential Techmarine, after the Neophyte continuously delivered to him considerable amounts of both Power Armour and parts of precious Terminator Armour recovered from various Tyranid Hive Fleet vessels. Sebastion was particularly focused on the restoration of damaged or lost Terminator Armour, for after the fall of Sotha, the Chapter only had three such suits in its possession, and the recent acquisition of a fourth partial suit was considered a major step forwards in creating a future Codex-approved Terminator Squad.
  • Iron Father Xerill - Xerill is an Iron Father of the Iron Hands Chapter who is currently seconded to the Deathwatch and has served as a Master of the Forge for close to eight Terran decades. He joined a handful of like-minded, inquisitive Deathwatch Space Marines that have been drawn back to the study of nearly-deserted Watch Stations, now known as the Dead Stations, and the ancient traces of knowledge and prophecy they contained. These few members have since dedicated their lives to finally unravelling the enigma of the Jericho Reach known as the Dark Pattern -- a series of mysterious events that continue to unfold, presaged in numerous ancient prophecies foretelling of great strife and darkness that are coming to pass in that area of space. Thanks to their interest in the Dead Stations, their peers refer to this group of Deathwatch Astartes as the "Dead Cabal." Xerill was inducted into their ranks fifty standard years ago after he recovered a series of Aeldari Spirit Stones. His passion for understanding and unlocking the knowledge contained within xenos artefacts drew the attention of Inquisitor Ramaeus, who had him reassigned to permanent detail on the Dead Stations Vigil. Since that time, Xerill has embraced the Dead Cabal and has dedicated his tenure with the Deathwatch to studying as many xenos artefacts as he can. He is especially fascinated by anything relating to the Necrons and has undertaken many missions based on the slightest inclination that there could be Necron activity involved.
  • Master of the Forge Jurisian - Jurisian was the Master of the Forge of the Black Templars Chapter's Helsreach Crusade. Under the command of the Reclusiarch Merek Grimaldus, he retrieved the Volcano Cannon from the Ordinatus Armageddon and used it to eliminate the Ork Mega Gargant at the head of the assault on Hive Helsreach. He exhibited the independence from Adeptus Mechanicus philosophy common among Black Templars and Space Marines in general as he was unafraid to enrage the servants of the Mechanicus, including the personnel of the Legio Invigilata.


  • Armageddon (Anthology) by Aaron Dembski-Bowden, Helsreach (Novel) by Aaron Dembski-Bowden, Ch. VIII
  • Codex: Dark Angels (6th Edition) pg. 26
  • Codex Adeptus Astartes - Space Marines (7th Edition) (Digital Edition), pp. 16, 57, 59
  • Codex: Space Marines (6th Edition), pg. 92
  • Codex: Space Marines (5th Edition), pg. 70
  • Deathwatch: Core Rulebook (RPG), pg. 51
  • Deathwatch: Game Master's Kit (RPG), pp. 25-26
  • Deathwatch: The Outer Reach (RPG), pp. 20-21
  • Warhammer 40,000: Rogue Trader (1st Edition) by Rick Priestley, pg. 83
  • White Dwarf 291 (US), "Cult of the Machine God: Techmarines of the Adeptus Astartes", pp. 14-17
  • Reclamation (Short Story) by Laurie Goulding
  • Salamander (Novel) by Nick Kyme
  • Firedrake (Novel) by Nick Kyme
  • Nocturne (Novel) by Nick Kyme
Space Marine Forces
Chapter Command Chapter MasterMaster of the KeepMaster of SanctityChief LibrarianMaster of the ApothecarionMaster of the ForgeMaster of the WatchMaster of the FleetMaster of the ArsenalMaster of the MarchesMaster of the RitesMaster of RelicsChief VictuallerLord ExecutionerMaster of RecruitsMaster of ReconnaissanceMaster of the SignalChapter AncientPrimaris AncientChapter ChampionHonour Guard
Company Command Command SquadReclusiam Command SquadCaptainPrimaris CaptainLieutenantPrimaris LieutenantCompany AncientCompany Champion
Specialists Librarian (EpistolaryCodicierLexicaniumPrimaris LibrarianVanguard Librarian) • Chaplain (ReclusiarchPrimaris ChaplainJudicar) • Apothecary (Primaris ApothecaryHelix Adept) • Techmarine
Veteran Squads Veteran Marines (Sternguard VeteranVanguard VeteranVeteran IntercessorVeteran Assault IntercessorBladeguard Veteran) • Terminator SquadTerminator Assault Squad
Battleline Squads Tactical SquadIntercessor Squad (Heavy Intercessor Squad) • Infiltrator Squad
Close Support Squads Assault SquadAssault Intercessor SquadInceptor SquadReiver SquadIncursor SquadSuppressor SquadBike SquadOutrider SquadCenturion Assault Squad
Fire Support Squads Aggressor SquadDevastator SquadHellblaster SquadEradicator SquadEliminator SquadCenturion Devastator Squad
Neophyte Squads Scout SquadScout Bike Squad
Light Vehicles Assault BikeAttack BikeScout BikeRaider Pattern Combat BikeInvader ATVLand Speeder (Land Speeder StormLand Speeder TempestLand Speeder TornadoLand Speeder TyphoonLand Speeder VengeanceLand Speeder ProteusDarkshroud) • Storm Speeder (Storm Speeder HailstrikeStorm Speeder HammerstrikeStorm Speeder Thunderstrike)
Combat Walkers Dreadnought (Castraferrum DreadnoughtSiege DreadnoughtHellfire DreadnoughtIronclad DreadnoughtVenerable DreadnoughtMortis DreadnoughtChaplain DreadnoughtLibrarian DreadnoughtFurioso DreadnoughtDeath Company DreadnoughtRedemptor DreadnoughtWulfen DreadnoughtDoomglaive Dreadnought) • Nemesis DreadknightInvictor Tactical Warsuit
Armoured Personnel Carriers RhinoRazorbackDamocles Command RhinoRhino PrimarisRhino AdvancerImpulsor
Main Battle Tanks Predator Destructor (Predator AnnihilatorBaal Predator) • Land Raider (Land Raider PhobosLand Raider CrusaderLand Raider RedeemerLand Raider AchillesLand Raider PrometheusLand Raider Terminus UltraLand Raider AresLand Raider ExcelsiorLand Raider Wrath of MjalnarLand Raider Angel InfernusLand Raider Solemnus AggressorLand Raider Anvilarum) • Deimos Vindicator Laser DestroyerRepulsorRepulsor ExecutionerGladiator (Gladiator ReaperGladiator ValiantGladiator Lancer) • Astraeus
Artillery WhirlwindVindicatorStalkerHunterWhirlwind HyperiosLand Raider HeliosThunderfire Cannon
Aircraft StormtalonThunderhawkThunderhawk TransporterShadowhawkStormravenStorm EagleFire RaptorStormhawk InterceptorCaestus Assault RamDark TalonNephilim JetfighterStormfangStormwolfCorvus BlackstarOverlordDrop Pod
Rare, Relic or Retired Vehicles Contemptor Pattern DreadnoughtDeredeo Pattern DreadnoughtCerberus Heavy Tank DestroyerLeviathan DreadnoughtJavelin Attack SpeederJetbikeDeimos PredatorDeimos RhinoSabre Tank HunterLand Raider ProteusKratos Battle TankMark IIb Land Raider PhobosMalcador Assault Tank (Malcador Annihilator) • Sicaran Battle TankSicaran VenatorSicaran Punisher Assault TankSicaran Arcus Strike TankSicaran Omega Tank DestroyerSpartan Assault TankTyphon Heavy Siege TankFellbladeFalchionMastodonDeimos Whirlwind ScorpiusXiphon Pattern InterceptorStormbirdKharybdis Assault Claw