The Astra Militarum are the mighty Hammer of the Emperor, an army so vast that it has never been fully recorded by the scribes of the Administratum. Drawn from a million worlds, its men and women are the thin line between Humanity and the void. On hundreds of thousands of warzones across the galaxy the armies of the Astra Militarum hold back the advance of alien empires, heretic warlords and daemonic gods. Armed with trusty lasguns and backed up by ranks of battle tanks and artillery, to them falls the task of protecting the Imperium from destruction; a duty that will only end in death.Codex: Astra Militarum is your guide to the armies of the Imperial Guard, most numerous of all the God-Emperor’s soldiers. This book covers the glorious history of the Astra Militarum, detailing their ten thousand year history and many of their greatest victories and legendary commanders. Also inside you will find rules for creating and organising an army of the Astra Militarum for your games of Warhammer 40,000, from massed ranks of Imperial Guardsmen to powerful Leman Russ Battle Tanks, as well as an impressive showcase of the Astra Militarum model range.