The Space Marines DLC includes 5 different Space Marine chapters. The Ultramarines, the Dark Angels, the Space Wolves, the Imperial Fists and the Blood Angels.

The Ultramarines

The Ultramarines, known for their extremely disciplined and courageous warriors are one of the most prestigious Chapter of the Space Marines. They follow the sacred texts of Primarch Roboute Guilliman’s ancient Codex Astartes unfailingly, which teaches obedience, self-reliance, and battlefield perfection.

The Dark Angels

The secretive Dark Angels hold traditions and rituals that date back to the earliest days of the Imperium – they were the first Legion, and one of the most powerful. Every single Dark Angel wishes atonement for a great sin their brothers committed long ago on their homeworld, Caliban. These monastic Space Marines have only a single goal: To eliminate the Fallen Angels, the Dark Angels that had given in to the temptations of Chaos during the Horus Heresy.

The Space Wolves

Space Wolves are savage. They accept who they are, fierce warriors from the land of Fenris, proud of their anti-authoritarian ways. A mutation in their gene-seed makes Space Wolves who bear the “Curse of the Wulfen” transform into wolf-like mutants.

The Imperial Fists

The Imperial Fists are recognized to be among the most loyal Chapters to the Emperor and have been instrumental in holding the Imperium together during the bleakest of times, with renowned stubborn resilience. They are Siege Warfare specialists, a title exemplified with their role in leading the defence of Earth, which gave them the title of "Defenders of Terra".

The Blood Angels

The Blood Angels are a Chapter known for their impressive bloodlust, and an occasionnal deadly rage, but also for their keen aesthetic skills and their exceptionnal longevity, even for Space Marines. Their Chapter Master, Dante, is more than a millennia-old, and leads his Chapter wisely and with exceptional efficiency.
The owners of the Early Adopters Edition of Battlefleet Gothic will receive the Space Marines for free today – the DLC will be automatically downloaded. Early Adopters will also receive the Tau Empire faction for free as soon as it’s available.
The Early Adopter offer apply to all pre-purchase owners and people who bought the game in participating retailers during the first two months of the game’s release – until June 21. Players who will purchase Battlefleet Gothic: Armada after June 21, will be able to purchase the Space Marines as a regular DLC.