Space Marine Chapter

The Space Marine Chapter is the largest commonly-used organizational unit of Space Marines, nominally consisting of a thousand Marines, give or take. As of the 41st Millennium, there are approximately one thousand Space Marine Chapters operating in the Imperium of Man.

Contents

OriginEdit

Each Chapter is descended, in one way or another, from the twenty original Space Marine Legions founded to wage the Great Crusade -- in fact, the term "Chapter" began as one of several names for a roughly thousand-strong division of Marines, as a thousand Marines was few enough to be logistically manageable while numerous enough to handle almost any situation, especially with the assistance of their Imperial Army regiments. However, some Legions preferred to operate at full strength all the time, especially the Sons of Horus (judging from the books, the Vengeful Spirit housed the Legion's whole first ten companies) and the Death Guard (operating most of the time as a single force of ~90k+ marines). It says something about the sheer manpower of these armies that large portions of the Legion were often benched during a campaign.

The Horus Heresy proved that having a quarter of a million Marines and millions of Guardsmen under the command of one corruptible individual was too dangerous, so Roboute Guilliman (who also originally had a quarter of a million of Marines and millions of Guardsmen under his command), with the grudging assistance of the surviving loyalist Primarchs, instituted the Codex Astartes reforms, where the remaining loyalist Legions were divided into Chapters of no more than a thousand Marines. This event was known as the Second Founding, with the creation of the twenty original Legions being retroactively designated the First Founding.

FoundingEdit

The First and Second Foundings were unusual compared to the rest; in both cases, there were plenty of Space Marines to be had, so the founding of new Legions or Chapters was basically a re-organization. By the time of the 41st Millennium, Space Marines are made in much fewer numbers, so founding a new Chapter is not done lightly -- in fact, only twenty-five Foundings have been held since the Second.

First, there has to be sufficient gene-seed. If there isn't enough in storage, more will be made by implanting some into slaves, extracting the progenoids, using them to make two sets of gene-seed, and so on. In a century, one set of gene-seed can be cloned into over a thousand, which is more than enough for a new chapter. Once there is enough gene-seed, a suitable set of Aspirants will go through training to become the first battle-brothers, while a few Veterans from a chapter that already exist will become the first Master and Captains of the Chapter. This is a great honor for those Veterans chosen, and for their Chapter as well.

OrganizationEdit

A single Marine is extremely powerful; a full Chapter is overkill for almost any situation save the most dire (though these situations are naturally the ones we hear about). To ensure that enough Marines are committed to a given battle (but no more, since they are too expensive to risk where they aren't needed), all Chapters have some organization scheme for dividing into smaller detachments. The majority of Chapters use the organization laid out in the Codex Astartes to some extent: a company of ten Veteran Squads, four Battle Companies with six Tactical Squads, two Assault Squads, and two Devastator Squads, four Reserve Companies (two with ten Tactical Squads, one with ten Assault Squads, and one with ten Devastator Squads), and a Scout Company.

TabletopEdit

In-game, one's choice of Chapter generally has no effect on gameplay -- of course different Chapters have different color schemes, and an army's lore may suggest taking certain units in greater or lesser quantities, but they all basically draw from the same army list. That said, some Chapter Masters and Captains, if chosen, can grant certain special rules to the army they lead, and some Chapters (Space Wolves, Black Templars and successors [prior to 6th edition], Blood Angels and successors, Dark Angels and successors, and Grey Knights) get their own Codices.

This changed with 6th Edition; now, your choice of chapter does affect what "Chapter Tactics" they get. For example, the Red Talons, an Iron Hands successor, has the Iron Hands' version of the Chapter Tactics rule, while Howling Griffons use the Ultramarines'. Some of the special snowflake chapters, like the Red Scorpions or Black Templars, get their own, but for the most part, it's based on whichever First Founding chapter they come from. 8th edition let you choose between 2 of 18 available chapter tactics or use a First Founding chapter's tactic.

See AlsoEdit

Forces of the Codex Compliant Astartes
Command: Apothecary - Brother-Captain - Brother-Sergeant - Chaplain - Chapter Master
Command Squad - Honour Guard - Librarian - Techmarine
Troops: Assault Squad - Centurion Squad - Chapter Serf - Devastator Squad
Scout Squad - Tactical Squad - Terminator Squad - Veteran Squad
Transports: Drop Pod - Land Raider - Mastodon Heavy Assault Transport
Razorback Transport - Rhino Transport - Spartan Assault Tank - Termite
Vehicles: Bike Squad - Dreadnought - Javelin Attack Speeder - Jetbike - Land Speeder
Predator Tank - Sabre Tank Hunter - Sicaran Battle Tank - Vindicator
Ordnance: Hunter - Rapier Armoured Carrier - Stalker - Thunderfire Cannon - Whirlwind
Flyers: Caestus Assault Ram - Fire Raptor - Landing Craft - Storm Eagle - Stormbird
Stormhawk - Stormraven - Stormtalon - Thunderhawk - Xiphon Interceptor
Superheavy Tanks: Cerberus Heavy Tank Destroyer - Fellblade Super-Heavy Tank
Typhon Heavy Siege Tank
Spacecraft: Battle Barge - Strike Cruiser
Allied Space Marines: Fallen Angel - Primaris Marine - Blood Angels - Dark Angels
Deathwatch - Grey Knights - Space Wolves
Chapters of the Adeptus Astartes
First Founding (M29): Blood Angels - Dark Angels - Imperial Fists - Iron Hands - Raven Guard
Salamanders - Space Wolves - Ultramarines - White Scars
Second Founding (021.M31): Angels of Absolution - Angels Encarmine - Angels Porphyr - Angels of Redemption
Angels Sanguine - Angels of Vengeance - Angels Vermillion - Aurora Chapter - Black Consuls
Black Guard - Black Templars - Blood Drinkers - Brazen Claws - Crimson Fists - Destroyers
Doom Eagles - Eagle Warriors - Excoriators - Fists Exemplar - Flesh Tearers
Genesis Chapter - Inceptors - Iron Snakes - Libators - Lions Sable - Marauders - Mortifactors
Nemesis - Novamarines - Obsidian Glaives - Patriarchs of Ulixis - Praetors of Orpheus
Rampagers - Raptors - Red Talons - Revilers - Silver Eagles - Silver Skulls - Soul Drinkers
Storm Lords - White Consuls - Wolf Brothers
Third to Twelfth Founding
(M32-M35):
Astral Claws - Charnel Guard - Dark Paladins - Executioners - Flesh Eaters - Halo Brethren
Howling Griffons - Iron Knights - Mantis Warriors - Marines Malevolent - Night Swords
Sable Swords (initial) - Scythes of the Emperor - Space Sharks - Sons of Guilliman
Thirteenth Founding (M35): Death Spectres - Exorcists
Fourteenth to Twentieth Founding: Angels of Fire - Celebrants
Twenty-First Founding
(991.M35):
Black Dragons - Blood Gorgons - Fire Hawks
Flame Falcons - Lamenters - Minotaurs - Sons of Antaeus
Twenty-Second to
Twenty-Sixth Founding (M35-M41):
Angels of Vigilance - Celestial Lions - Dark Hunters - Disciples of Caliban - Emperor's Spears
Fire Angels - Imperial Harbingers - Iron Lords - Knights of the Raven - Marines Errant
Mentors - Fire Claws/Relictors - Star Phantoms - Steel Cobras - Subjugators
Ultima Founding
(999.M41):
Angels of Defiance - Blades of Vengeance - Castellans of the Rift - Fulminators
Knights Cerulean - Knights of the Chalice - Knights of Thunder - Necropolis Hawks
Nemesors - Praetors of Ultramar - Rift Stalkers - Silver Drakes - Silver Templars
Sons of the Phoenix - Storm Reapers - Umbral Knights - Unnumbered Sons
Valiant Blades - Void Tridents - Wolfspear
Unknown Founding: Absolvers - Accipiters - Adulators - Angel Guard - Angels Eradicant - Astral Knights
Blood Ravens - Blood Swords - Brothers Penitent - Crimson Castellans - Crimson Consuls
Crimson Scythes - Dark Hands - Dark Sons - Death Eagles - Fire Lords - Guardians of the Covenant
Graven Spectres - Hammers of Dorn - Harbingers - Hawk Lords - Invaders - Iron Talons - Jade Dragons
Knights of Blood - Knights Unyielding - Marines Exemplar - Night Watch - Rainbow Warriors
Reclaimers - Red Hunters - Red Scorpions - Sable Swords (refounded) - Solar Hawks
Sons of Orar - Star Dragons - Storm Giants - Storm Wardens - Valedictors - Viper Legion - Vorpal Swords
Unsanctioned Founding: Consecrators - Sons of Medusa - Steel Confessors
Others: Adeptus Custodes - Astartes Praeses - Deathwatch - Grey Knights