War ravages the sentinel world of Vigilus. Though beset by an Ork Speedwaagh! and a Genestealer Cult uprising, its crucial location at the mouth of the Nachmund Gauntlet makes it an invaluable asset to the Imperium – one that its people will fight to the last to defend. Yet this defiance may cost the Imperium dearly, for on top of all the planet’s woes, a Chaos invasion has begun, led by a warlord claiming to be the herald of Abaddon himself! Imperium Nihilus: Vigilus Defiant is packed with exciting background and new rules that enable you to refight the events described in the book. Here’s what you will find inside: - Background of the period leading up to the War for Vigilus - A star map of the Vigilus system - Descriptions of the planet of Vigilus and its military disposition - Detailed accounts of the major events in the War for Vigilus - Campaign deployment maps and descriptions of the battles that were fought in each war zone - Details of the various armies that fought in this campaign - Campaign rules allowing you to bring the narrative of this book to life on your tabletop. - Guidance on organising and running a Vigilus campaign -12 narrative play missions (6 Crucible of War, 6 Echoes of War), as well as additional special rules and stratagems - Six exciting battlezones to use in your games of Warhammer 40,000 - Specific rules for using the various factions that fought on Vigilus, including datasheets for Marneus Calgar, his Victrix Guard and Haarken Worldclaimer - 22 specialist detachments, with new warlord traits, relics, and stratagems