Silver Legion of Mercatorius

The Silver Legion of Mercatorius was the name of the Astra Militarum Regiment which recruited from the Mercatorius System. At the outbreak of the Gracchian Uprising the Regiment numbered around 1 million men under the command of Commander Argus. Their were numbers supplemented by local Planetary Defence Forces and Arbites. Given the wealth of the system, the regiment was seen as relatively well equipped and trained.

Following the Invasion of Mercatorius, the legion was largely destroyed in the intense fighting and ambushes around the entire system. The few thousand which survived to the time of the Mercatorius Crusade found themselves incorporated into the Imperium's wider armed forces, with these units being allowed to retain their distinctive silver armour.