Ultramarines

No Space Marine Chapter can claim so long and glorious a history as the Ultramarines. As one of the original twenty Legiones Astartes they fought many wars under the command of their primarch Roboute Guilliman, and after the dark years of the Horus Heresy it was his wisdom that broke the remaining Legions into smaller Chapters. Across ten thousand years of unceasing conflict, the Ultramarines have waged war against xenos and traitors of every kind, and their deeds have become legend across the Imperium.