WH40K Canon Timeline of the Imperial Guard

This page covers details of the long and bloody history of the Astra Militarum, more commonly known as the Imperial Guard. Presented here are the different ages of history that covers the major events of the relentless defense of the Imperium by an army of countless courageous mens and womens accross the Galaxy. Many of this events are of great importance to the Imperium and the Astra Militarum as a all, meaning your Homebrews might be impacted by at least some of them. Otherwise, they make for great inspiration in writing your own deeds and campaigns for your own Regiments.

Note : All the dates presented here are meant to be the most precise possible, but many of them were lost through History, or are even contradictory between many sources. The contributors of these archive have the best efforts to provide the best timeline possible.

The Age of Rebirth : M31-M32.
The Imperium rebirth from the cinders of the Horus Heresy. New doctrines, such as the Codex Astartes and the Tactica Imperium are finalised and applied in order to make any futur rebellion of similar scale impossible.

Reunification : M32-M35.
The Adeptus Terra starts the ambitious project of taking direct control of the Imperium's most important systems. In the front line of those conquest are the Adeptus Astartes and the huge armies of the Astra Militarum. During the progression, Astropathic chorus are installed on Armageddon, Bakka, Maccrage, and thousands other worlds. Standard Template Construct lost since centuries are rediscovered in the ruins of Cana and hinder the Imperium's Technological decline. The renegades of Chaos and Xenos are exterminated by the billions across the Galaxy and countless rebel systems are brought on their knees.

The Age of Apostasy : M36-M38.
Fanatism takes over reason and anarchy reigns supreme. The words of the Emperor is subverted by corrupted ideologists, and the strong attacks the weak like scavengers.