Graham McNeill
The Iron Without

As the Iron Warriors fall upon the world of Calth, Soltarn Vull Bronn is tasked with an important mission by the warsmith.
Warhammer 40k
short

Also in:
Eye of Terror
Iron Warriors: the Omnibus
There Is Only War
Hammer And Bolter: Year Two
Honour And Vengeance: Uriel Ventris Vs Honsou