[[File:Chapter Master Marius Gage.jpg|thumb|300px|First Master Marius Gage.{{Fn|2}}]] ==Biography=='''Marius Gage''' was present for the muster on [[Chapter MasterCalth]] of the First Chapter of in preparation for the [[joint Ultramarines]] /[[Space Marine Legion|LegionWord Bearers]] (First Master of the Ultramarines) at the time of assault on the [[Battle of CalthGhaslahk Xenohold]] . He was present for a meeting with his Primarch and second-in-command fellow Chapter Masters to discuss the state of the muster on the ''[[Roboute GuillimanMacragge's Honour]]''.{{Fnfn|1a}}. One He was present on the bridge of the flagship when the ''[[TerraCampanile]]n '' crashed into [[Space Marines|MarinesCalth Veridian Anchor]], knocking out the flagship's systems and rending her blind.{{Fn|1c}} In his haste to try and restore the ships systems, Gage was one of forgot to simply open the blast shutters which had closed the original recruits viewports, only to see absolute devastation among the XIII Legionfleet. When Guilliman ordered the vox activated, he quickly realized that the Word Bearers had opened fire, something Gage could not believe.{{Fn|1b1d}}.  During the Battle of Calth, Gage was injured by a [[daemon]], losing his hand in the process. He was saved by [[Aeonid Thiel]], a sergeant marked for censure{{Fn|1b}}. Once the [[Word Bearers]]' control over the Calth orbital defences was broken, Gage was ordered by Guilliman to take the ''[[Macragge's Honour]]'' in pursuit of the ''[[Infidus Imperator]]'', the flagship of [[Kor Phaeron]]{{Fn|1c1g}}.

**{{Endn|1c}}: Absolute//Overwhelm: Chapter 1, pg. 115**{{Endn|1d}}: Absolute//Overwhelm: Chapter 2, pg. 132-136**{{Endn|1g}}: Ruin//Storm: Chapter 4, pp. 395-397