Marneus Augustus Calgar is Chapter Master of the Ultramarines, Lord Macragge and Master of Ultramar: the commander who held Macragge against the Tyranids, ruled Ultramar for centuries, and later crossed the Rubicon Primaris to fight on beside the returned Roboute Guilliman.
Marneus Calgar at a glance
| Titles | Chapter Master of the Ultramarines, Lord Macragge, Master of Ultramar |
| Chapter | Ultramarines |
| Homeworld | Macragge |
| Wargear | The Gauntlets of Ultramar, the Armour of Antilochus, Victrix Honour Guard at his side |
| Status | Alive, now a Primaris Space Marine |
Who is Marneus Calgar?
Calgar is the most famous Chapter Master in the Imperium. He leads the Ultramarines, the Chapter of Roboute Guilliman, and also rules Ultramar, the realm of worlds around Macragge, as its lord. He is a warrior, a general and a statesman in one, the living example of the Codex Astartes. His bionic eye and his heavy gauntlets have made him the face of the Space Marines for decades of Warhammer 40,000.
The First Tyrannic War: the Battle of Macragge
Calgar's defining battle came when Hive Fleet Behemoth, the first great Tyranid swarm, fell on Ultramar. Calgar led the defence of Macragge himself. The Ultramarines First Company died to the last man holding the northern polar fortress, and Calgar was gravely wounded leading the fight in the south. Macragge survived and Behemoth was destroyed, but the Chapter needed years to rebuild. The names of the fallen Terminators are honoured on Macragge to this day.
Centuries of war
After Macragge, Calgar led the Ultramarines across the galaxy: against Orks, Tau, Chaos and the Tyranids again on worlds like Ichar IV. He rebuilt his Chapter, kept Ultramar strong, and became known for his will. Calgar fights at the front and rarely needs to say anything twice.
Guilliman returns
When the Great Rift tore the galaxy in half, Guilliman woke from his ten-thousand-year stasis. For Calgar, who had kept watch over his gene-father's body for centuries, it was the fulfilment of a lifelong prayer. Guilliman went to lead the Indomitus Crusade, and Calgar defended Ultramar against Chaos in his absence.
Crossing the Rubicon Primaris
Badly wounded again, Calgar chose to undergo the dangerous surgery that turns an old Space Marine into a Primaris Marine, known as crossing the Rubicon Primaris. Many veterans die in the process. Calgar survived, and came back bigger and stronger in new Gravis armour. A Chapter Master of centuries, he now leads the next generation of Ultramarines.
Lord of Ultramar
Calgar is not just a soldier. As Lord Macragge he governs the five hundred worlds of Ultramar from the Fortress of Hera, keeping the realm Guilliman built strong and loyal. His Chapter follows the Codex, but Calgar knows when to bend it, a skill that marks the best commanders of the Adeptus Astartes.
Marneus Calgar FAQ
Is Marneus Calgar a Primaris Marine?
Yes. He crossed the Rubicon Primaris after his wounds in the Indomitus era.
Is Calgar Guilliman's son?
No. Calgar is a Space Marine made from Guilliman's gene-seed. Guilliman is his gene-father and Primarch, and Calgar is the Chapter Master who serves him.
What happened at the Battle of Macragge?
The Ultramarines beat Hive Fleet Behemoth, but lost their entire First Company, and Calgar was badly wounded.
Where can I read about Calgar?
He appears in many Black Library books and in Marvel's licensed Marneus Calgar comic series.
Books to read
- Dark Imperium (Guy Haley)
- Calgar's Fury and Calgar's Siege (Paul Kearney)
- Marneus Calgar (Marvel comics, Kieron Gillen)
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Find them as Black Library paperbacks and audiobooks.
More Ultramarines: read our Ultramarines lore guide and the Roboute Guilliman page.
Lore summarised in our own words from Black Library novels, codexes and community wikis. Warhammer and all related names are trademarks of Games Workshop; WIZY is an independent fan site.