Space Marine Legions

Original Space Marine Legions

Pre-Heresy

2 they kept their numbers low to hide from the Imperium

3Their numbers never above 100,000 in the original universe so i'm going for a lower number

4Legion is being currently being a council who all control portions of the Sons of Horus.

Post-Heresy

Modern-Day

Imperium Resurgent Resurgent-Legions Chaos Imperium's Deamon-Legions

Dragocis Novus's Dragon-Legions Other Legions