Space Marine Legion

The First-founding Legions are the twenty Legions of Space Marines (18 of which are known) that were created by the Emperor to aid him in the Great Crusade, each was created from and lead by their Primarch. Following the Horus Heresy the Legions were broken up according to the Codex Astartes in the Second Founding. Below is a list of the First-founding Legions and their Primarchs.

Legion	Primarch	Homeworld	Notes
Dark Angels	Lion El'Jonson	Caliban
Unknown - All records lost following the Horus Heresy
Emperor's Children	Fulgrim	Chemos	Excommunicate Traitoris
Iron Warriors	Perturabo	Olympia	Excommunicate Traitoris
White Scars	Jaghatai Khan	Mundus Planus
Space Wolves	Leman Russ	Fenris
Imperial Fists	Rogal Dorn	Terra
Night Lords	Konrad Curze aka the Night Haunter	Nostramo	Excommunicate Traitoris
Blood Angels	Sanguinius	Baal
Iron Hands	Ferrus Manus	Medusa
Unknown - All records lost following the Horus Heresy
World Eaters	Angron	No Record	Excommunicate Traitoris
Ultramarines	Roboute Guilliman	Macragge
Death Guard	Mortarion	Barbarus	Excommunicate Traitoris
Thousand Sons	Magnus the Red	Prospero	Excommunicate Traitoris
Luna Wolves	Horus	Cthonia	Excommunicate Traitoris
Word Bearers	Lorgar	Colchis	Excommunicate Traitoris
Salamanders	Vulkan	Nocturne
Raven Guard	Corax	Deliverance
Alpha Legion	Alpharius	No Record	Excommunicate Traitoris