The newest Horus Heresy supplement for games of 40k er make that games of 30k released recently, and wow what a wild ride this book is!
A lot of the fluff surrounding the Salamanders, Word Bearers, Night Lords and Iron Hands are at best only ten years old, and only really hinted at in the Horus Heresy novel series as of late.
The Massacre book takes several helpings of fluff for all of those legions and crams it down our throats, while giving us even more pre-heresy background on said legions as well.
Of course this book touched on the big four chapters from volume one as well, and gave us new rules for many persons of importance from those legions too (like Maloghurst the twisted for instance).
However the Salamanders, Word Bearers, Night Lords and Iron Hands are the superstars of book two for sure.
It also provides over thirty pages of new and existing background on the Salamanders, Word Bearers, Alpha Legion and Iron Hands legions and provides the rules for their primarchs as well.
Plus there is a campaign section for replaying the fateful battle on the Urgall Depression as well.
Also present was what many are saying is the framework for allowing Super Heavies to be played in “normal” games of 40k as well. It may behoove us all to pay close attention to the pages picture above.