Unnumbered Sons
| Unnumbered Sons | ||
|---|---|---|
| Identical to each member's progenitor Chapter. | ||
| Battle Cry | Unknown | |
| Founding | Ultima Crusade | |
| Successors of | All First Founding Chapters | |
| Successor Chapters | Multiple Ultima Founding Chapters | |
| Chapter Master | n/a | |
| Primarch | All the Loyalist Primarchs. | |
| Homeworld | Originary from Mars, as all Primarines are. No established Homeworld during the war. | |
| Strength | About 20,000 at the time of the Indomitus Crusade's end, has since been dispersed into both the Ultima Founding Chapters and into other Chapters in need of reinforcements | |
| Specialty | Great coordination and cooperation between astartes with different geneseed, being a massive pool of reinforcements during the Indomitus Crusade. | |
| Allegiance | Imperium | |
| Colours | Pale Grey, with heraldry displayed on their pauldrons | |
The Unnumbered Sons (full name being the Unnumbered Sons of the Primarchs, colloquially known as the Greyshields) are a Chapter of Astartes formed during Ultima Founding, during the Indomitus Crusade. Created by the Lord Commander of the Imperium Roboute Guilliman, this Chapter was comprised of only Primaris Marines, comprising numbers around nine times legion-size. This unnatural size for a chapter is due to the fact that the Unnumbered Sons originally included the entirety of the existent Primarines, made with the geneseed of the nine loyalist primarchs, and made to work as a unit to improve the synergy between different chapters.
Origins of the Unnumbered Sons
After Archmagos Dominus Cawl unveiled his 10.000 year project to Guilliman, the imperium had thousands of these new Primaris Marines ready and avalible to use. The beginning of the Indomitus Crusade and the Ultima Founding meant that this massive force would have to be used on the battlefield as soon as possible. Thus, the Unnumbered Sons, famous for not wearing any chapter heraldry (thus having nothing drawn on their pauldrons and having no colour on their armor, hence the nickname "greyshields"), were forced to push the tides of the Warp back and stop the 13th Black Crusade. During the duration of the conflict, Guilliman used this chapter to draw reinforcements and new chapters, adding primarines to the already existing chapters and creating fully new primarine chapters. This, combined with the losses caused by war attrition, meant that the Greyshieds's numbers began to shrink fast.
By the time Roboute Guilliman declared the end of the crusade, around 20.000 Greyshields were still around. After the Battle of Raukos was over, Guilliman ordered the disbandment of the Unnumbered Sons, to either add them to already existing chapters or to create new Astartes Chapters from them.