Medrengard is the grim daemon world claimed by the Iron Warriors within the Eye of Terror, a planet remade in the image of its bitter masters. Where the Thousand Sons wrought beauty from the Warp and other Legions indulged in riotous excess, the Iron Warriors built only walls. Medrengard is a world of unbroken fortification, its surface an endless sprawl of bastions, ramparts, and siege-works stacked upon one another until the very horizon is a jagged silhouette of ferrocrete and iron.
The sky above is a wound of pallid, sickly light, and no sun rises over the labouring masses below. Countless slaves and captives toil without end in the world's forges and quarries, building fortresses that serve no purpose but the compulsion of their builders, then tearing them down to build anew. It is a monument to a resentment ten thousand years deep, the domain of the daemon primarch Perturabo, who broods upon his failures and betrayals amid an architecture of pure spite.
From this iron hell the warbands of the Legion sally forth to besiege the fortresses of the loyal, for the Iron Warriors are the galaxy's supreme masters of siegecraft, and destruction is the only art they still love. Medrengard offers neither comfort nor glory, only labour, discipline, and the cold satisfaction of walls that will never fall. It is less a home than a sentence, served in perpetuity by the damned.
The atlas continues
