Brood Brother Revolution

Genestealer Cults are insidious. This is largely thanks to the Genestealer's Kiss which implants a victim of the creature with their genetic data and causes them to become part of the Broodmind. With enough time and effort, the Cults may infest an entire world of otherwise loyal citizens against their will. Even the warriors of the Adeptus Astartes are not immune to the kiss and may be bent to the will of the Broodmind if successfully implanted. When the time comes for an uprising, these Brood Brothers who are infested rise up with all the training and equipment they possess, greatly bolstering the otherwise improvised war machine of the Cult.