List of Space Marine Chapters - S: NameOriginFoundingNotesSable BrotherhoodBlood AngelsUnknownThe Sable Brotherhood is a Loyalist Space Marine Chapter and a Successor Chapter of the Blood Angels, created during an unknown Founding. The battle-brothers of the Sable Brotherhood are considered to be unusually dour, even for Successors of the Blood Angels.Sable KnightsBlood AngelsUnknownDetermined to make the most of their time before the Black Rage consumes them, the Sable Knights are fleet-based, racing from war to war.Sable SwordsUnknownUnknownThe Sable Swords is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding said to be created in the latter years of the 41st Millennium, making it one of the newest Space Marine Chapters to be raised.SalamandersN/AFirst FoundingThe Salamanders is a First Founding Space Marine Chapter whose Primarch was Vulkan. It originally served as the Imperium's XVIII Space Marine Legion during the Great Crusade and the Horus Heresy. The Salamanders as a Chapter are unusually concerned with preventing civilian casualties compared to most other Space Marines.Sanguine HostBlood AngelsUnknownThe Sanguine Host is a Loyalist Space Marine Chapter and a Successor Chapter of the Blood Angels, created during an unknown Founding.Scar LordsUnknownSecond FoundingThe Scar Lords was a Loyalist Space Marine Chapter of the Second Founding and unknown origin. The Chapter met its end in conflict with the T'au of Vior'los.Scions of IronUnknownUnknownThe Scions of Iron is a Codex Astartes-divergent Loyalist Space Marine Chapter of unknown Founding and origin. They are known for their high reverence for the Machine Spirit of their vehicles and equipment.Scions of SanguiniusBlood AngelsUnknownThe Scions of Sanguinius are a Loyalist Space Marine Successor Chapter of the Blood Angels, created during an unknown Founding.Scythes of the EmperorUltramarines3rd FoundingThe Scythes of the Emperor's origins can be traced back to the bygone era of the Horus Heresy, when it was originally part of the Ultramarines Legion's 199th "Aegida" Company, which was assigned as sentinel over the restricted world of Sotha, and the mysterious xenos artefact known as the Pharos.SelenarchsUnknownUnknownThe Selenarchs is a Loyalist Space Marine Chapter of unknown Founding and origin.Shadow FalconsUnknownUnknownThe Shadow Falcons is a Loyalist Space Marine Chapter of unknown Founding and origin. This Chapter is notable for possessing a high number of Librarians within its ranks. At least one junior Lexicanium serves in each Company's Command Squad.Shadow GriffonsUnknownUnknownThe Viper Legion is a Loyalist Space Marine Chapter of unknown Founding and origin.Shadow HauntersRaven GuardUnknownThe Shadow Haunters is a Loyalist Space Marine Chapter of unknown Founding created from the gene-stock of the Raven Guard. It has participated in the pacification of the Fenris System that was caught in a daemonic incursion.Shadow HawksUnknownUnknownThe Shadow Hawks is a Loyalist Space Marine Chapter of unknown Founding and origin. Its 3rd Company went Renegade following the Cruach Mhorn Massacres of 304.M39 and its Captain Mahaur became the Chaos Lord known as Mahaur the Harvester who later led the Slaughterkin warband of Chaos Space Marines.Shadow WolvesImperial FistsUnknownThe Shadow Wolves was a Codex Astartes-compliant, Loyalist Space Marine Chapter derived from the Imperial Fists' gene-seed. Created during an unknown Founding, the Shadow Wolves was known to be a zealous and faithful Chapter by reputation, fighting for the honour of the Emperor of Mankind for thousands of Terran years, until it met its ultimate fate at the hands of a Tyranid splinter fleet in 987.M41 when its homeworld of Varadon was overrun by the xenos swarms.ShadowhawksUnknownUnknownThe Shadowhawks is a Loyalist Space Marine Chapter of unknown Founding and origin. It has participated in the First and the Second Punisher Wars against the vile Punishers Chaos Space Marine warband.Silver DrakesUnknownUnknownThe Silver Drakes is a Loyalist Space Marine Chapter comprised entirely of Primaris Space Marines, created from an unknown lineage and raised during the Ultima Founding of ca. 999.M41. The Silver Drakes were tasked by the Imperium with turning back Hive Fleet Ouroboris. Their Inceptor Squads cut a swathe through the Hive Fleet's sky-swarms, hunting the immense winged monsters at their heart. Though the Drakes' tactics are effective, their numbers are still few. Isolated and outnumbered, the Chapter has dug in to fight a long, bloody, running war.Silver EaglesUltramarinesSecond FoundingThe Silver Eagles is a Loyalist Codex Astartes-compliant Space Marine Chapter. It is a Second Founding Successor Chapter of the Ultramarines Legion.Silver GuardUnknownUnknownThe Silver Guard is a Loyalist Space Marine Chapter of unknown Founding and origin that fought to liberate the Sabbat Worlds Sector from the control of the forces of Chaos during the Sabbat Worlds Crusade that began in 741.M41.Silver PhoenixesUnknownUnknownThe Silver Phoenixes is a Loyalist Space Marine Chapter of unknown Founding and origin.Silver SabresUnknownUnknownThe Silver Sabres is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin.Silver SkullsUltramarinesSecond FoundingThe Silver Skulls is a Codex Astartes-compliant Loyalist Chapter of Space Marines which is a Second Founding Successor Chapter of the Ultramarines. The Silver Skulls will only take to the battlefield when the psychic portents that their specialist Librarians known as Prognosticators receive from the Emperor indicate that the outcome of the combat will be favourable for the Chapter.Silver StarsUnknownUnknownUnable to recover enough of the precious Progenoid Glands of their fallen battle-brothers, the Silver Stars could not cultivate further Astartes organ implants to create future generations of Space Marines and died off, unable to replace its losses.Silver TemplarsUltramarinesUltima FoundingThe Silver Templars is a Loyalist Codex Astartes-compliant Space Marine Chapter born of the Ultima Founding and a Successor Chapter of the Ultramarines. The Silver Templars were amongst the first of the Primaris Chapters created in the Ultima Founding. The Silver Templars' homeworld is Novaris, located in the Ultima Segmentum.Skull BearersExecutioners (Unconfirmed)UnknownThe Skull Bearers is a Loyalist Codex Astartes-compliant Space Marines Chapter of unknown origin and Founding which believes itself to be a Successor Chapter of the zealous and ferocious Executioners Chapter. The validity of this belief is unknown.Sky SentinelsUnknownUnknownThe Sky Sentinels was a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. The Sky Sentinels were killed to the last man when their homeworld of Pranagar was overrun by the forces of Magnus the Red, Daemon Primarch of the Thousand Sons in the wake of the 13th Black Crusade and the creation of the Great Rift in 999.M41.Solar HawksWhite ScarsUnknownThe Solar Hawks is a little-known Loyalist Space Marine Successor Chapter of the White Scars, founded during an unknown Founding. Sharing their forefather's battle lust and aggressive style of lightning warfare, the Solar Hawks are notable for being aggressive and noble. The Solar Hawks field an especially large number of airborne assets, regularly deploying whole wings of Stormtalons or Stormravens into battle.Sons of AntaeusUltramarines21st FoundingThe Sons of Antaeus is a Loyalist Space Marines Chapter of the the 21st Founding that is a Successor Chapter of the Ultramarines. Like the mythological giant Antaeus, the Astartes of the Sons of Antaeus Chapter are unusually large and robust physical specimens, even among their already superhuman kind.Sons of DornImperial FistsUnknownThe Sons of Dorn is a Loyalist Codex Astartes-compliant Space Marine Chapter and a Successor Chapter of the Imperial Fists. It was created during an unknown Founding at some time during the 34th Millennium. In 999.M41 Archea was ravaged by a splinter fleet of the Tyranids' Hive Fleet Leviathan.Sons of GalathorUnknownUnknownThe Sons of Galathor is a Loyalist Space Marine Chapter of unknown origin and Founding.Sons of GorgaxUnknownUnknownUnable to recover the precious Progenoid Glands of their fallen battle-brothers in large enough amounts, the Sons of Gorgax were unable to cultivate further organ implants and quickly died off, unable to replace its losses.Sons of GuillimanUltramarinesUnknownThe Sons of Guilliman is a Codex Astartes-compliant Space Marine Chapter created during the 33rd Millennium from Ultramarines gene-seed.Sons of HeliosUnknownUnknownThe Sons of Helios are a Loyalist Space Marine Chapter of unknown Founding and origin. They believed they had the ability to inure themselves to the corrupting power of the Warp through the practice of an unusual mental discipline. In truth, this discipline was a Chaos ritual that had been taught to them by a daemon of Tzeentch, and ultimately resulted in the damnation of the Chapter.Sons of JaghataiWhite Scars (Suspected)UnknownThe Sons of Jaghatai is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding. Despite the Chapter's name its genetic heritage remains unconfirmed.Sons of MedusaIron HandsN/A - Ratified by Imperial edict (37th Millennium)The Sons of Medusa is a Loyalist Successor Chapter of Space Marines drawn from the unforgiving Iron Hands Chapter whose existence was ratified by an Imperial edict of the High Lords of Terra in 011.M37.Sons of OrarUltramarinesUnknownThis Chapter reveres Orar, an Ultramarines Legion Captain who won great renown in the wake of the Horus Heresy. The Sons of Orar are perhaps most famous for spearheading the Imperium of Man's massive assault upon the Asuryani Craftworld Alaitoc.Sons of OrpheusUnknownUnknownThe Sons of Orpehus is a Loyalist Space Marine Chapter of unknown Founding and origin.Sons of the PhoenixImperial FistsUltima FoundingFaithful to the Emperor and ritualistic in their battle cant, the Sons of the Phoenix pride themselves on plunging into the flames of battle. They are constantly on crusades, which are led by their Chaplains.Sons of SanguiniusBlood AngelsSecond FoundingBrutal and bloodthirsty, the Sons of Sanguinius zealously prosecute the enemies of Mankind, often times displaying a disturbing and callous disregard for the lives of the civilians of the Imperium.Sons of the KrakenUnknownUnknownThe Sons of the Kraken is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin.Sons of the RavenRaven Guard (Unconfirmed)UnknownThe Sons of the Raven participated in the campaign against the forces of Chaos and the Hell-Forge of Sarum, where the Sons of the Raven were utterly annihilated in 416.M37.Space SharksUnknownSecond Founding (unconfirmed) or 23rd Founding (37th Millennium) (Unconfirmed)It is not entirely clear whether the Space Sharks are a separate Chapter or are the same group of Astartes as the recently returned Carcharodons Chapter that also took part in the Badab War.Space WolvesN/AFirst FoundingThe Space Wolves is one of the original 20 First Founding Space Marine Legions, and was once led by its famed Primarch, Leman Russ. The Space Wolves are renowned for their anti-authoritarian ways and their embrace of their homeworld Fenris' savage barbarian culture as well as their extreme deviation from the Codex Astartes in the Chapter's organisation.Star DragonsUnknownUnknownThe Star Dragons is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown Founding and origin. The Chapter homeworld of the Star Dragons is the planet Draconith. Currently, the Star Dragons have joined with the Blood Swords Chapter to travel the wastes of space near the Eye of Terror in a joint containment fleet designated Containment Fleet Kappa.Star LeopardsUnknownUnknownThe Star Leopards is a Loyalist Space Marine Chapter of unknown Founding and origin.Star PhantomsUnknown23rd FoundingThe Star Phantoms took part in the final days of the Badab War and the final assault upon the Renegade Astral Claws' Chapter homeworld of Badab Primaris, helping bring the war to a successful conclusion.Star ScorpionsUnknown25th FoundingThe Star Scorpions are now considered extinct, a lost Chapter of Astartes.Steel ConfessorsIron Hands19th FoundingThe Steel Confessors recently successfully defended their homeworld, the Forge World of Kalevala, from an attack by the Tyranid Hive Fleet Leviathan, though at great cost to the Chapter.Stone HeartsUnknownUnknownThe Stone Hearts is a Loyalist Space Marine Chapter of unknown Founding and origin. Stone Hearts battle-brothers are known for marking their bodies with intricate tattoos that denote each battle that they have fought in.Stone GauntletsUnknownUnknownThe Stone Gauntlets is a Loyalist Space Marine Chapter of unknown Founding and origin. This Chapter's most notable action occurred during the Imperium's defence of the Medina Corridor from a large invasion by the forces of Chaos.Storm CallersUnknownUnknownThe Storm Callers is a Loyalist Space Marine Chapter of unknown origin and Founding. Portions of the Chapter were corrupted by Chaos during the Storm Callers advance into the Taninim Expanse, a civil war was fought within the ranks of the Chapter and the Loyalists emerged triumphant, purging the Traitors from their midst.Storm FalconsUnknownUnknownThe Storm Falcons ís a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding.Storm GiantsSalamanders (Unconfirmed)26th FoundingThe Storm Giants is a Loyalist Codex Astartes-compliant Chapter of Space Marines created during the 26th Founding in 738.M41. Its origins remain unknown, though many suspect that it is a Successor Chapter of the Salamanders of Nocturne.Storm HawksRaven GuardUnknownThe Storm Hawks is a Loyalist Codex Astartes-compliant Space Marine Chapter and rare Successor Chapter of the Raven Guard. Their exact founding date is unknown but the Storm Hawks are thought to be related to the Raven Guard through a later Founding.Storm LordsWhite ScarsSecond FoundingThe Storm Lords is a Loyalist Space Marine Chapter and a very rare Second Founding Successor Chapter created from the gene-seed of the White Scars.Storm RavensUnknownUnknownThe Storm Ravens is a Loyalist Space Marine Chapter of unknown Founding and origin. This Chapter was instrumental in the development of the Suppression Force doctrine, which is credited to Jagveij Skyhammer, Master of the Arsenal for the Storm Ravens Chapter and victor of the Rhopara Crusade.Storm ReapersWhite ScarsUltima FoundingThe Storm Reapers is a Loyalist Space Marine Chapter comprised entirely of Primaris Space Marines, created from the lineage of the White Scars and raised during the Ultima Founding of 999.M41.Storm WardensUnknownUnknownThe Storm Wardens is a Codex Astartes-compliant Space Marine Chapter of unknown Founding and origin, based on the Forbidden World of Sacris in the Calixis Sector of the Segmentum Obscurus. Its entire 1st Company and Chapter Master Owin Glandwyr were placed into stasis within a sealed portion of the Chapter's fortress-monastery on Sacris following the Nemesis Incident of 945.M36.Storm WarriorsUnknownUnknownThe Storm Warriors is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding. It appears that it is a late Founding Chapter.Storm WingsRaven GuardUnknownThe Storm Wings is a Loyalist Codex Astartes-compliant Space Marine Chapter from an unknown Founding that is a Successor Chapter of the Raven Guard.StormwatchersUnknownUnknownThe Stormwatchers are a Loyalist Space Marine Chapter of unknown genetic origin and Founding located in the Caligari Sector of the Segmentum Tempestus. The Chapter's existence is a secret that few amongst the Imperium of Man are aware of and they have sworn to aid the Inquisition operating in the Caligari Sector in defending that blighted realm.StormwalkersUnknownUnknownThe Stormwalkers is a Codex Astartes-compliant Loyalist Space Marine Chapter of unknown Founding and origin. The Stormwalkers are known to have sent three Brotherhoods of Astartes to take part in the massive Dark Marches Crusade (launched in 610.M36), commanded by Lord Tempestus Hal Orpheus.SubjugatorsImperial Fists (Unconfirmed)UnknownThe Subjugators is a Loyalist Space Marine Chapter suspected to be a Successor Chapter of the Imperial Fists' created during either the 23rd or 24th Founding in the 41st Millennium. The Subjugators is one of the Loyalist Space Marine Chapters founded as part of the Astartes Praeses -- one of the 20 Chapters of Astartes that was created to defend the regions surrounding the Eye of Terror.SupplicatorsUnknownUnknownThe Supplicators is a Loyalist Space Marine Chapter of unknown Founding and origin.Swords of PraesiumUnknownUnknownThe Swords of Praesium is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown Founding or origin. Two of this Chapter's companies turned Renegade on the world of Acropolis Vega after being trapped by a Warp Storm for 70 years. They became the Renegade warband known as the Swords of Khargoth.Swords of the EmperorUnknownUnknownThe Swords of the Emperor is a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown Founding or origin.