The Horus Heresy Book Two - Massacre
|Preceded by||Book One - Betrayal|
|Followed by||Book Three - Extermination|
- 1 Cover Description
- 2 General Structure
- 3 Contents
- 3.1 The Dropsite Massacre
- 3.2 The Space Marine Legions
- 3.3 Battles in the Age of Darkness
- 3.4 The Dropsite Massacre Campaign
- 3.5 Space Marine Legion Crusade Army List Additions and Updates
- 3.6 Space Marine Legion Army List Appendix
- 3.7 The Legio Cybernetica
- 3.8 Appendix: Battles in the Age of Darkness
- 4 Sources
- 5 Additional information
Word of Horus' treachery escapes Isstvan III and now the Legions loyal to the Emperor mobilise to make Horus and those who follow account for their crimes. However the depth of the betrayal is yet to be revealed.
Most of the book is presented as a record written by "A.K." shortly after the Horus Heresy. The first part of the book contains a brief summary of the Unification Wars and the Great Crusade, the raising up of Horus as Warmaster, the Battle of Isstvan III, and the Imperial response to that atrocity.
The Dropsite Massacre
This section contains a summary of the eponymous event, from the initial scans of the Isstvan system to the end of the battle, including maps of the Isstvan system and the Urgall Depression as the battle unfolded.
The Space Marine Legions
This section contains updated information on the Sons of Horus, World Eaters, Emperor's Children, and Death Guard, as well as in-depth information on the history, disposition, and exemplary battles of the Iron Hands, Night Lords, Salamanders, and Word Bearers, and a brief on the Legio Atarus Titan Legion.
Battles in the Age of Darkness
The Dropsite Massacre Campaign
This section describes a campaign for reenacting the Dropsite Massacre on the tabletop or exploring possible alternate outcomes of pivotal moments.
Space Marine Legion Crusade Army List Additions and Updates
This section is designed to expand upon the Space Marine Legion Crusade army list found in Book One.
Space Marine Legion Army List Appendix
This section contains rules, options, and special characters for the eight Legions on Isstvan V.
- Calas Typhon
- Ferrus Manus
- Castrmen Orth
- Autek Mor
- Konrad Curze
- Mawdrym Llansahai
- Jago Sevatarion
- Cassian Dracos
- Nomus Rhy'tan
- Kor Phaeron
The Legio Cybernetica
This section contains units for building an Adeptus Mechanicus force, either standalone or as an allied detachment to a Legiones Astartes army.
Appendix: Battles in the Age of Darkness
This section contains rules for using super-heavy units and apocalyptic weapons in Age of Darkness battles as well as an afterword from the Forge World Studio.