The Wolf of Ash and Fire is the fourteenth short story published in the Horus Heresy that was not originally part of an anthology novel. The Wolf of Ash and Fire was originally released as a free exclusive e-book with every copy of Macragge's Honour. It is also now included in the Eye of Terra anthology novel. The Wolf of Ash and Fire is one of only a handful of short stories that has its own artwork, which is used as the cover for the Eye of Terra anthology.
Horus Lupercal, ever the favoured son of the Emperor of Mankind, stands ready to lead his Legion against the Ork-held planetoid of Gorro. After nearly two centuries of warfare in the name of the Great Crusade, the many victories of the Luna Wolves have become the stuff of legend. Still, nothing could prepare them for the singular honour of fighting alongside the Emperor Himself once more...
- The Wolf of Ash and Fire (Short Story) by Graham McNeill