The Horus Heresy (Forge World Series) - Army Lists: The Horus Heresy Army Lists, known informally by fans as the "Red Books," are collections of the most up-to-date various army lists and unit profiles from across the campaign books. These books are in regular hardback format and are an indispensable reference when planning armies and playing games.1. The Horus Heresy: Legiones Astartes - Crusade Army List 	 	<a href="https://static.wikia.nocookie.net/warhammer40k/images/1/1a/HorusHeresyLegionesAstartesCrusadeArmyListCover.jpg/revision/latest?cb=20170206033716" class="image"><img alt="HorusHeresyLegionesAstartesCrusadeArmyListCover" src="https://static.wikia.nocookie.net/warhammer40k/images/1/1a/HorusHeresyLegionesAstartesCrusadeArmyListCover.jpg/revision/latest/scale-to-width-down/120?cb=20170206033716" decoding="async" loading="lazy" width="120" height="169" class="thumbimage" data-image-name="HorusHeresyLegionesAstartesCrusadeArmyListCover.jpg" data-image-key="HorusHeresyLegionesAstartesCrusadeArmyListCover.jpg" data-relevant="1" data-src="https://static.wikia.nocookie.net/warhammer40k/images/1/1a/HorusHeresyLegionesAstartesCrusadeArmyListCover.jpg/revision/latest/scale-to-width-down/120?cb=20170206033716" /></a>The Horus Heresy: Legiones Astartes - Crusade Army List is the first red book in the Horus Heresy series by Forge World. This red book contains the complete profiles, special rules and wargear, compiled and updated, for the core Legiones Astartes Legion Crusade Army List for Warhammer 40,000 and the Battles in the Age of Darkness gaming expansion. The contents of this book have been drawn from across the three volumes of Forge World's Horus Heresy Isstvan Trilogy series. This book is considered outdated and is no longer in print, the updated version is the The Horus Heresy: Legiones Astartes - Age of Darkness Army List.2. The Horus Heresy: Legiones Astartes - Isstvan Campaign Legions 	 	<a href="https://static.wikia.nocookie.net/warhammer40k/images/0/00/HorusHeresyLegionesAstartesIsstvanCampaignLegionsCover.jpg/revision/latest?cb=20170206033741" class="image"><img alt="HorusHeresyLegionesAstartesIsstvanCampaignLegionsCover" src="https://static.wikia.nocookie.net/warhammer40k/images/0/00/HorusHeresyLegionesAstartesIsstvanCampaignLegionsCover.jpg/revision/latest/scale-to-width-down/120?cb=20170206033741" decoding="async" loading="lazy" width="120" height="169" class="thumbimage" data-image-name="HorusHeresyLegionesAstartesIsstvanCampaignLegionsCover.jpg" data-image-key="HorusHeresyLegionesAstartesIsstvanCampaignLegionsCover.jpg" data-relevant="1" data-src="https://static.wikia.nocookie.net/warhammer40k/images/0/00/HorusHeresyLegionesAstartesIsstvanCampaignLegionsCover.jpg/revision/latest/scale-to-width-down/120?cb=20170206033741" /></a>The Horus Heresy: Legiones Astartes - Isstvan Campaign Legions is the second red book in the Horus Heresy series by Forge World. This book collects together the Space Marine Legions appendix entries from the first three of Forge World's Horus Heresy books - The Isstvan Trilogy. As such it is intended to be used alongside its companion book The Horus Heresy: Legiones Astartes - Crusade Army List. This book is considered outdated and is no longer in print, the updated version is the The Horus Heresy: Legiones Astartes - Age of Darkness Legions book.3. The Horus Heresy: Mechanicum - Taghmata Army List  	 	<a href="https://static.wikia.nocookie.net/warhammer40k/images/9/90/HorusHEresyMechanicumTaghmataArmyListCover.jpg/revision/latest?cb=20170206033844" class="image"><img alt="HorusHEresyMechanicumTaghmataArmyListCover" src="https://static.wikia.nocookie.net/warhammer40k/images/9/90/HorusHEresyMechanicumTaghmataArmyListCover.jpg/revision/latest/scale-to-width-down/120?cb=20170206033844" decoding="async" loading="lazy" width="120" height="157" class="thumbimage" data-image-name="HorusHEresyMechanicumTaghmataArmyListCover.jpg" data-image-key="HorusHEresyMechanicumTaghmataArmyListCover.jpg" data-relevant="1" data-src="https://static.wikia.nocookie.net/warhammer40k/images/9/90/HorusHEresyMechanicumTaghmataArmyListCover.jpg/revision/latest/scale-to-width-down/120?cb=20170206033844" /></a>The Horus Heresy: Mechanicum - Taghmata Army List is the third red book in the Horus Heresy series by Forge World. This red book brings together the Mechanicum units and rules from the first five Black Books, including all of the units available to the Mechanicum Taghmata, Legio Cybernetica and Ordo Reductor armies as well as support aircraft, seven classes of Imperial Knights, the Warhound, Reaver and immense Warlord Titans and introduces powerful new units such as the Ordinatus Macro Engines.4. The Horus Heresy: Legiones Astartes - Age of Darkness Army List 	 	<a href="https://static.wikia.nocookie.net/warhammer40k/images/a/a1/HorusHeresyAgeofDarknessArmyListCover.jpg/revision/latest?cb=20170206033812" class="image"><img alt="HorusHeresyAgeofDarknessArmyListCover" src="https://static.wikia.nocookie.net/warhammer40k/images/a/a1/HorusHeresyAgeofDarknessArmyListCover.jpg/revision/latest/scale-to-width-down/120?cb=20170206033812" decoding="async" loading="lazy" width="120" height="156" class="thumbimage" data-image-name="HorusHeresyAgeofDarknessArmyListCover.jpg" data-image-key="HorusHeresyAgeofDarknessArmyListCover.jpg" data-relevant="1" data-src="https://static.wikia.nocookie.net/warhammer40k/images/a/a1/HorusHeresyAgeofDarknessArmyListCover.jpg/revision/latest/scale-to-width-down/120?cb=20170206033812" /></a>The Horus Heresy: Legiones Astartes - Age of Darkness Army List is the fourth red book in the Horus Heresy series by Forge World. This red book contains the complete non-Legion specific unit profiles, special rules and wargear, compiled and updated, for all Space Marine Legion armies in Horus Heresy games using the Battles in the Age of Darkness gaming expansion for Warhammer 40,000.5. The Horus Heresy: Legiones Astartes - Age of Darkness Legions 	 	<a href="https://static.wikia.nocookie.net/warhammer40k/images/9/94/HorusHeresyAgeofDarknessLegionsCover.jpg/revision/latest?cb=20170206033901" class="image"><img alt="HorusHeresyAgeofDarknessLegionsCover" src="https://static.wikia.nocookie.net/warhammer40k/images/9/94/HorusHeresyAgeofDarknessLegionsCover.jpg/revision/latest/scale-to-width-down/120?cb=20170206033901" decoding="async" loading="lazy" width="120" height="156" class="thumbimage" data-image-name="HorusHeresyAgeofDarknessLegionsCover.jpg" data-image-key="HorusHeresyAgeofDarknessLegionsCover.jpg" data-relevant="1" data-src="https://static.wikia.nocookie.net/warhammer40k/images/9/94/HorusHeresyAgeofDarknessLegionsCover.jpg/revision/latest/scale-to-width-down/120?cb=20170206033901" /></a>The Horus Heresy: Legiones Astartes - Age of Darkness Legions is the fifth red book in the Horus Heresy series by Forge World. This red book collects together and updates the Space Marine Legions appendix entries from the first five of Forge World's Horus Heresy books, and is intended to be used alongside its companion book, The Horus Heresy: Legiones Astartes - Age of Darkness Army List. This book contains the Legion specific rules, units and special characters – including the mighty Primarchs – for 13 of the Space Marine Legions.6. The Horus Heresy: Crusade Imperialis - Army Lists  	 	<a href="https://static.wikia.nocookie.net/warhammer40k/images/b/b9/HorusHeresyCrusadeImperialisArmyListCover.jpg/revision/latest?cb=20170206033957" class="image"><img alt="HorusHeresyCrusadeImperialisArmyListCover" src="https://static.wikia.nocookie.net/warhammer40k/images/b/b9/HorusHeresyCrusadeImperialisArmyListCover.jpg/revision/latest/scale-to-width-down/120?cb=20170206033957" decoding="async" loading="lazy" width="120" height="156" class="thumbimage" data-image-name="HorusHeresyCrusadeImperialisArmyListCover.jpg" data-image-key="HorusHeresyCrusadeImperialisArmyListCover.jpg" data-relevant="1" data-src="https://static.wikia.nocookie.net/warhammer40k/images/b/b9/HorusHeresyCrusadeImperialisArmyListCover.jpg/revision/latest/scale-to-width-down/120?cb=20170206033957" /></a>The Horus Heresy: Crusade Imperialis - Army Lists is the sixth red book in the Horus Heresy Series by Forge World. This book contains the unit profiles, characters and special rules for the three armies originally published in The Horus Heresy: Book Four - Conquest, and The Horus Heresy: Book Five - Tempest, each fully revised and updated. Also included is the Battles in the Age of Darkness expansion rules.