Scars is the 28th novel in the Horus Heresy Series, written by Chris Wraight. It was released online as a 12-part serialized novel in August 2013, with a new part being released once a week. It was published in print in February 2014. It was later included in "The Novels: Volume 6" eBook collection.
- Of all the Legiones Astartes, the White Scars of Jaghatai Khan remain the most enigmatic and elusive. Born of a civilisation that prizes honour, speed and fearsome loyalty, their allegiance has yet remained unclear even as the galaxy is torn apart by Horus’s treachery, and both sides have apparently counted them among their potential allies in the war to come. But when the Alpha Legion launch an unexplained and simultaneous attack against the White Scars and Space Wolves, the Khan must decide once and for all whether he will stand with the Emperor or the Warmaster... or neither.
- Fresh from their conquest of Chondax and the discovery of Horus's rebellion, Jaghatai Khan's warriors stand divided. Long considered one of the less trustworthy Legions, many of the White Scars claim to owe their loyalty exclusively to Terra, and others still to the Warmaster and his warrior lodges. But when a distress call from Leman Russ of the Space Wolves brings the wrath of the Alpha Legion to Chondax, the Khan's hand is forced and the decision must be made – in the great war for the Imperium, will he side with the Emperor or Horus?
- Horus, The Warmaster, primarch of the Luna Wolves
- Jaghatai Khan, The Warhawk, primarch of the White Scars
- Leman Russ, The Wolf King, primarch of the Space Wolves
- Rogal Dorn, The Emperor's Praetorian, primarch of the Imperial Fists
- Sanguinius, The Angel, primarch of the Blood Angels
- Magnus the Red, The Crimson King, primarch of the Thousand Sons
- Mortarion, The Death Lord, primarch of the Death Guard
- Fulgrim, The Phoenician, primarch of the Emperor's Children
- Alpharius, Primarch of the Alpha Legion
The V Legion 'White Scars'
- Hasik Noyan-Khan, Lord commander
- Jemulan Noyan-Khan, Lord commander
- Qin Xa, Master of the Great Khan's keshig guard
- Shiban Khan, Brotherhood of the Storm
- Sangjai, Apothocary
- Torghun Khan, Brotherhood of the Moon
- Hibou Khan, Brotherhood of the Dawn Sky
- Halji, Seconded adjutant
- Targutai Yesughei, Zadyin arga', Stormseer
- Lushan, Commander of the Sickle Moon'
The VI Legion 'Space Wolves'
- Gunnar Gunnhilt, Jarl of Onn
- Ogvai Ogvai Helmschrot, Jarl of Tra
- Bjorn, 'The One-Handed' pack leader
- Bhorth Rank? Commander of the?
The Shattered Legions
- Xa'ven, Captain, XVIII Legion 'Salamanders', 34th Company
- Bion Henricos, X Legion 'Iron Hands'
The XVII Legion 'Word Bearers'
- Kal-Zedej, Cadre sereant, and commander of the Vorkaudar
- Ledak, Yesa Takdar cadre, 256th Company
- Rovel, Yesa Takdar cadre, 256th Company
- Malcador the Sigillite, Imperial Regent, First Lord of Terra
- Constantin Valdor, Captain-General, Legio Custodes
- Jian-Tzu, Star-speaker, Mistress of Astropaths, Swordstorm
- Ilya Ravallion, General, Departmento Munitorum