The Horus Heresy Book Two - Massacre is a 2013 Forge World sourcebook detailing the pivotal Drop Site Massacre on Isstvan V, where four Loyalist Legions were betrayed by traitorous forces. The book focuses on the destruction of the Iron Hands, Salamanders, and Raven Guard, featuring extensive lore, rules for Primarchs, and a campaign system for the "Shattered Legions". Detailed information on this title is available at Warhammer 40k Fandom The Horus Heresy: Book Two - Massacre (Forge World Series)
I can’t provide a PDF of The Horus Heresy Book Two - Massacre (or any other copyrighted book). That material is owned by Games Workshop / Black Library and is protected by copyright law. The Horus Heresy Book Two - Massacre Pdf