Attila

Attila is a planet of the Imperium that has only developed a late Iron Age civilisation and is only moderately technologically advanced. This barbaric world is also the homeworld of the famed Rough Riders of Attila Imperial Guard Mounted Regiments.

History
Attila is a Feudal World that is somewhat smaller than Terra. Humans colonised Attila many thousands of years ago and adopted a nomadic lifestyle almost immediately. The original landing site of Khanasan has grown into the only city on the whole planet. This bustling metropolis is a gathering place for the tribes of Attila and the centre of its government. The bulk of the population are nomads of the vast steppe-lands. They subsist from the herds of ovigors - gigantic, shaggy and savage animals native to Attila. The rich flesh and dark blood form the basic subsistence diet of the steppe tribes. During the summer months, the Attilans drive their herds towards the heart of the continent, following the spring thaw and new grown pasture. In winter time, they retreat towards the outer grasslands abutting the coasts, and here their animals find enough grazing to keep them alive until the year turns.

This world possesses a single continent that covers almost half its surface. The centre of this massive land mass is prone to such extremes of temperature that it remains uninhabited, a baking desert in the summer which becomes a sub-zero sea of sand and snow over winter. Between these deadly lands of the continental centre and the coasts is a belt of rich savannah thousands of miles deep, punctuated with mountain chains, mighty inland lakes, and vast rivers. Only towards the coastal edges does the grassland give way to verdant forests, encircling the entire continent with a thin arboreal band.

Source

 * Codex: Imperial Guard (2nd Edition), p. 17