Tallarn is an arid desert world whose people are counted among the finest mobile and guerrilla fighters in the Imperium. A sun-scorched planet of endless dunes and rocky wastes, it demands frugality, patience, and cunning from those who would survive its heat and scarcity, virtues that carry over directly into its way of war.
The Tallarn Desert Raiders serve the Astra Militarum as swift-striking specialists, masters of hit-and-run tactics who appear from the shifting sands, strike hard, and vanish before an enemy can respond. Wrapped against the sun and dust, they favor mobility and misdirection over brute confrontation, wearing down larger foes through relentless raids and ambushes across open terrain.
Tallarn's grim reputation was sealed during the Horus Heresy, when traitor forces unleashed a catastrophic virus-bombing upon the world, poisoning its atmosphere and slaying most of its population in a matter of hours. The survivors, driven into sealed shelters and buried tanks, waged one of the largest and longest armored battles in human history against the invaders amid the toxic ruin. That crucible of dust and death forged the Tallarni into the desert warriors they remain today, a people who learned to make war in a poisoned wasteland and never forgot the lesson.