The Forging is the name given to the period right after the Great Crusade when the Imperium rebuilt itself, expanded its borders, and briefly slowed its own technological decline. It’s often called the Golden Age of the Imperium, and it’s the high point that everything since has been measured against.
What the Forging actually was
The Forging sits at the start of the Age of the Imperium, in the slot the timeline labels the Age of Rebirth. It’s the stretch where the newborn Imperium stopped being a crusade and started being an empire: consolidating, bureaucratising, and pushing its reach outward again.
The Adeptus Terra used this window to pull the most important star systems under its direct control. That’s the administrative spine of the Imperium as we know it, and it was set during the Forging.
Key developments
Three things stand out. First, astropathic choirs were established on major worlds, including Armageddon, Bakka, and Macragge. That gave the Imperium a reliable psychic communications network across huge distances, which is the difference between an empire and a scatter of planets.
Second, STC discoveries in the ruins of the Cana system slowed the technological decline that had been eating away at humanity since the Age of Strife. It wasn’t a full recovery, but it bought time.
Third, the Imperium went back on the offensive. Borders expanded, Chaos and xenos forces were pushed back, and rebellious systems were brought to heel, much like during the Great Crusade.
- Adeptus Terra takes direct control of key systems
- Astropathic choirs founded on Armageddon, Bakka, Macragge and others
- STCs recovered from the Cana system ruins
- Expansion, purges of Chaos and xenos, and suppression of rebels
Where it fits in the timeline
The Forging comes right after the Great Crusade and the Horus Heresy, before the Nova Terra Interregnum, the Age of Apostasy, the Age of Redemption, the Waning, the Time of Ending, and finally the Age of the Dark Imperium.
So it’s early. It’s the Imperium’s first real breathing space, and arguably its best one.
| Era | Position |
|---|---|
| Age of Rebirth / The Forging | First |
| Nova Terra Interregnum | Second |
| Age of Apostasy | Third |
| Age of Redemption | Fourth |
| The Waning | Fifth |
| Time of Ending | Sixth |
| Age of the Dark Imperium | Seventh |
Why it matters
The Forging is the baseline the Imperium never gets back to. Every later era is described in terms of decline, loss, or stagnation, and the Forging is the reference point for what was possible.
It also explains why the Imperium is so obsessed with STCs and with holding onto what it has. The Cana discovery is the proof that recovery was once possible, and the fact that it never happened again is the tragedy.
Key facts
- The Forging is also known as the Golden Age of the Imperium
- It follows the Great Crusade and Horus Heresy in the timeline
- The Adeptus Terra brought major systems under direct control during this period
- Astropathic choirs were set up on Armageddon, Bakka, Macragge and other worlds
- STCs found in the ruins of the Cana system slowed the Imperium’s tech decline
- The Imperium expanded, purged Chaos and xenos, and put down rebel systems
FAQ
When was the Forging?
It came right after the Great Crusade and the Horus Heresy, at the start of the Age of the Imperium. It’s the first era listed in that sequence, before the Nova Terra Interregnum.
Why is it called the Golden Age of the Imperium?
Because it’s the period when the Imperium was expanding, consolidating, and actually recovering technology rather than losing it. Later eras are all framed as decline from this point.
What did the Imperium gain during the Forging?
Direct Adeptus Terra control over key systems, a working astropathic network on worlds like Armageddon, Bakka and Macragge, and STC discoveries from the Cana system that slowed technological decline.