Vostroyan regiment defending an icy factory planet against xenos invasion.
"Vostroya is a world in the Halo Zone beyond the Eye of Terror, which swore allegiance to Mars during the Age of Strife. During the Horus Heresy, Vostroya refused to provide regiments to the Emperor, preferring instead to reserve the population in the manufactorium blanketing the world. After the Heresy came to an end the Vostroyans have, for the last ten thousand standard years, given up the firstborn son of every family for service in the Imperial Guard to repay their dept to the Emperor.
Unlike other Imperial Guard regiments that are raised en-masse, the Firstborn get a steady flow of new recruits from their homeworld. As a result, the Firstborn regiments have existed unbroken since they were first created. This is not always easy to organize, but ensures that Vostroyan regiments maintain their highest potential, as well as ensuring there's a core of veteran warriors. One consequence of this method is that the Firstborn are considered a brotherhood of warriors and are proud to train the recruits according to their own exacting standards. They specialize in urban and winter style combat.
Being away from centralized control of the Imperium, Vostroyan soldiers and officers retain a very archaic appearance compared to the rest of the Imperial Guard. Their weapons are passed down from firstborn to firstborn and are usally worth more than the guardsmen who carry them."
A quick work with Wacom tablet, took about 4 hours. Once again a Warhammer 40k illustration but damn that rich lore. Fascinating!