Valhalla

Valhalla is an Imperial ice world, also classified by the Administratum as a civilised world, located in the Ultima Segmentum of the galaxy. Valhalla is most famous across the Imperium of Man as the homeworld of the Valhallan Ice Warriors Regiments of the Imperial Guard, famous for their tenaciousness in holding their ground against even the most hopeless odds, and their ability to suffer the most appalling casualties without breaking. Valhalla was originally a verdant paradise world. No records survive of its colonisation by humanity, but legends recall a world ripe for conquest. Unfortunately, Valhalla was destined for catastrophe. A rogue comet entered into a collision course with Valhalla. The planet's defense lasers fired at the comet, but only succeeded in breaking it up. Later, it was found that the comet was made of almost pure iron, explaining why the lasers were so ineffective. The comet impacted in the vast ocean but a mile-wide fragment impacted the northern continent, creating vast plumes of dust which proceeded to cover the planet in a blanket of dirt. To make matters worse, the planet's orbit was changed, moving it a long way from its sun. This change in the amount of warmth and light altered Valhalla's ecosystem permanently, changing the planet to an icy wasteland. The people struggled to make a living, fearing famine due to a lack of viable farmland.

Unfortunately, this was not the end of Valhalla's troubles. The comet was bad, but not to be the end of their suffering. A damaged Ork warfleet descended on the planet and proceeded to fight the Valhallans for the precious food they had stored. The Valhallans held out bravely for a long time in their vast hive cities beneath the ice but were pushed right back to the food vats. Eventually they destroyed the Orks by using ice boring machines to strategically strike at the heart of the mob, burning and melting most of the Orks and scattering the rest. Regiments of Valhallans have been assigned to planets infested with Orks due to their intimate knowledge of Ork tactics and their dogged determination in the face of defeat, where other armies might run. Valhalla is an extremely cold, ice covered planet where the temperature never rises above freezing. The Valhallan Ice Warriors resemble the historical Soviet Red Army in their gear and regalia.