The iron ring began to turn.
A bizarre planet that looked as though it had been forged from steel rotated from behind the iron ring to the front, directly facing the expedition fleet.
At first, those in the expedition fleet believed the planet was a mutated world, like one they had previously seen that had transformed from a morbidly obese man into a planet. It had mutated, which was why it looked as though it had been made of steel.
But that was not the case.
After every available means of detection had scanned the planet, they discovered that it was not an Iron Planet at all. It was merely a planet filled with every kind of defensive installation built by the Iron Warriors.
The orderly, massive black lines visible across the planet's surface were excavated transport trenches. Countless Giant War Machines of the Iron Warriors, the clumsy Iron Men they had manufactured themselves, Terminators fused from steel and flesh, traitorous Knight Families, Titan Legions...
Every enormous or cumbersome War Machine could be moved through those transport trenches.
The angular structures on the planet's surface were merely the tips of various colossal defensive fortresses.
There were even more militarized terrain features that could not be seen with the naked eye and had only been detected by scanners—so many that even Guilliman could not comprehend them all in a short time.
As the Warmaster, Lion found it difficult to imagine what price his army would have to pay to assault such a planet.
The intelligence gathered by the Inquisitors showed that the Iron Warrior traitors called this planet the Unbreakable Line.
"Stop wasting the Blackstone warheads on other planets," Guilliman said to Adam. "Hit this Iron Planet with them!"
After speaking, Guilliman looked at Qin Mo.
Qin Mo nodded.
Adam immediately