Catachan is one of the deadliest death worlds in the Imperium, a jungle planet whose every plant, beast, and insect has evolved into a lethal predator. Located in the Ultima Segmentum, it is a place of steaming rainforests, venomous flora, and carnivorous wildlife where the very ground may swallow the unwary. To be born on Catachan is to learn that survival is a daily war against the world itself.
The brutal conditions have forged its human inhabitants into some of the finest light infantry the Astra Militarum can field. The Catachan Jungle Fighters are famed for their mastery of guerrilla warfare, their skill with knife and demolition charge, and their uncanny ability to endure environments that would kill lesser soldiers outright. Muscular, taciturn, and contemptuous of parade-ground discipline, they favor results over ceremony.
On Catachan, children who survive to adulthood are hardened veterans by any other world's standard, and the regiments raised there are prized across a hundred war zones for their resilience in the most hostile theaters. The planet exports little but soldiers, yet those soldiers are worth a hundred lesser men when the fighting turns to jungle, swamp, or ruin. It is a world that kills without malice and produces warriors without equal, chronicled among the Imperium's harshest cradles in the lore of Catachan.