The Battle of Kronos

Era beginning/end

The Ferro Dominion finally draws one of the Draconic Brood's Dreadnoughts, The Titanus Ignis into direct conflict around the then-uninhabited world of Kronos.
After a sixteen-day battle that came to be known as the Iron Victory, The Ferro lured the Dreadnought into a trap by manipulating gravitational anomalies around the planet and inciting the Dragonborn slaves aboard the Dreadnought to sabotage the massive ship's systems during a key engagement.

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A decisive battle late in the galactic conflict between the Ferro Dominion and the combined alliance of the Draconic Brood, The Gnomish Interplanetary Fleet, and the High Eldar.
  Taking place over sixteen days in orbit around the planet Kronos, the Ferro Dominion technically claimed victory over the engagement, though they suffered heavy losses that resulted in a destabilization of the Ferro military leadership and the eventual insurrection and cannibalization of the majority of the Ferro Dominion’s forces and territories only a few years later.
 

The Engagement At Hyperion Prime

After the lengthy war against the alliance of multiple species, the Ferro Dominion were desperate for a swift and decisive victory. With resources slowly hemorrhaged over the final years of conflict as the Ferro were losing planets, the admiralty hatched a plan for a major battle involving subterfuge, trickery, a slave revolution, and the uninhabited backwater system of Kronos.
  In a desperate maneuver that feigned a damaged high-priority target (in this case, Princess Victoria's flagship), the Ferro pierced a vital system in the Draconic Brood’s front line and managed to draw the ire of one of the massive Draconic Dreadnoughts. By appearing to be more damaged and desperate than they were, the Ferro forces scattered and fell into a seeming panicked retreat, with ships jumping out of the system in random directions.
Staging Princess Victoria’s flagship to appear in dire condition and having it jump not to a Ferro system but an unclaimed and seemingly empty one, the prize was too valuable and the normally cautious Dreadnought gave chase, following Victoria’s signature to the Kronos system.
 

The Ferro Trap

After a sixteen-day battle in orbit around Kronos, the Ferro closed the jaws on their trap.
By coercing a rebellion deep in the Dreadnought’s slave-labor force of Dragonborn at the height of the battle and triggering an experimental gravitational anomaly technology they had built hidden on The Black Moon, the Ferro fleet crippled the Dreadnought and pinned it into a decaying orbit around the planet, unable to jump and unable to resist the gravity well of Kronos.
  Damaged and listless, the Dreadnought impacted the planet and caused massive geological upheaval and the genesis of the entire third continent.
The massive Dreadnoughts, with their almost planet-sized super structure, are home to more than just military and crew, but entire civilizations of non-combatants and civilians, many who live their lives without ever leaving the ship. The hundreds of thousands of inhabitants of the Dreadnought had no option but to go down with the ship and crash land on the planet.
  Though successful in their battle, the remaining Ferro fleet lacked the resources to flee the system and they too were stranded on the planet, though capable of making a far more controlled landing. Their first encampments gave rise to the Ferro Sovereignty after a few generations, once the people realized they would not be rescued from the surface of Kronos by the rest of the Ferro Dominion.