Marines Errant - Chapter Homeworld: During its existence, the Marines Errant Chapter has never established a formal fortress-monastery nor has it designated a specific Chapter homeworld. Instead, the Chapter has known little rest as its members travel the entirety of the Imperium, and often far beyond its boundaries, to constantly expand the boundaries of the Emperor's realm.While this limits some of the fellowship between Space Marines assigned to different companies of the Chapter, the additional tactical flexibility has served them well in fulfilling their designated role.The Marines Errant lack the resources or need to maintain a traditional homeworld. Instead, their battle barge serves as their primary location for command operations and Chapter coordination. This mobile fortress-monastery grants the Chapter a greater level of flexibility for those instances when it becomes necessary to assemble multiple companies prior to embarking upon a crusade.There are, however, a few limitations that the Marines Errant Chapter has needed to address over the course of their existence. The most vital of these is finding a secure storage location for their gene-seed. Even a mighty battle barge may be lost or destroyed during the course of a crusade. These vessels also suffer from exposure to the Warp and potential Chaos contamination at a much greater level than a more stable planetary body.Because of this, the Chapter designated the world of Vilamus as its gene-seed repository. The fortress the Chapter maintains on Vilamus bears massive Void Shields, anti-air Defence Lasers, and a small garrison for defence.The world was also chosen as its location is believed to be relatively stable from Warp incursions. During those occasions when a company of the Marines Errant must rebuild its strength due to an extended crusade or substantial losses, it is usually added to the garrison on Vilamus, so that it can add another layer to the world's defences.But in 999.M41 disaster struck, as the infamous Chaos Lord Huron Blackheart led his Renegade warband, the Red Corsairs, in alliance with a large Night Lords warband commanded by the mighty Chaos Champion called The Exalted, in assaulting Vilamus in order to capture the Marines Errant Chapter's gene-seed repository.The Renegades' intentions were to use the captured Astartes gene-seed to replenish their own ranks with new Chaos Space Marines. The Marines Errant's fortress on Vilamus was targeted due to its relatively small garrison size. Luring the bulk of the Chapter away from the planet, the Red Corsairs managed to disable the fortress' Void Shields and launched a determined assault that neutralised the fortress' power network and its automated defences.This attack led to the loss of nearly all of the Marines Errant's stockpile of precious genetic material. The loss of virtually all of the Chapter's gene-seed reserves represents an enormous catastrophe that may doom the Marines Errant to a gradual descent towards extinction, unless the gene-seed can somehow be recovered.Due to the Marines Errant spending so much time on active crusade, the Chapter's independently functional companies must be able to recruit while in the field. In this way, they need not wait for their return to a home planet in order to replace Battle-Brothers lost in battle. Consequently, the Chapter draws its recruits from the myriad human inhabited worlds of the Imperium.For many Initiates of the Chapter, the life of a Space Marine is the only opportunity they encounter to learn of the galaxy beyond their remote worlds. As they undergo their training, these young Battle-Brothers learn of the true nature of the Imperium at the same time that they learn the rites and combat techniques of their new Chapter.