Battle of Iyo

Location
 Cybros Sovereignty (Defected)
 Ra'dam Federation
* Fleet Captain Terrance Aubrey
* Lieutenant Pentaghast

Corvanan Combine
* Grand Executor Dela'core Falligus
* Thayssa Jin (Defected)
* Archon Thel Nor
* Archon Jyur Huy

Cybros Dominion
* Hierarch Urus Ni
* Hierarch Iaya Sha
 Ra'dam Federation
* Federation First Fleet
* Federation 13th Corps

Corvanan Combine
* The Onyx Guard
* The Red Guard

Cybros Sovereignty (Separatists)
* Sovereignty Queen's Swords
* Sword Caste
* Shield Caste

Cybros Dominion
* Swords of Advan
 Ra'dam Federation
* 37,000 Ground Assets
* 600 Ships

Corvanan Combine
* 27,000 Ground Assets
* 800 Ships

Cybros Sovereignty (Separatists)
* 30 Ships
* 300 Ground Assets
* 55,000 Ground Assets
* 340 Ships

Cybros Dominion
* 100,000 Ground Assets
 Ra'dam Federation
* Near-annihilated

Corvanan Combine
* Severally diminished

Cybros Sovereignty (Separatists)
* Near-annihilated
* Wiped out

Cybros Dominion
* Minimal Casualites

"*The Cybros have retreated to their last stronghold on Iyo, this planet sits on the outskirts of known space. This is where we will meet them in battle, and this is when we will end the threat that they pose to our peoples. So let us be united in one purpose and one mind, and let us show the Cybros what true strength means*"
—Fleet Captain Terrance Aubrey
The Battle of Iyo, also known as OPERATION: FRACTURE or the GREAT BATTLE '''was a major battle fought during the last days of the Cerberus Galactic Conflict. It saw the combined forces of the Ra'dam Federation, Corvanan Combine and the Cybros Sovereignty set against each other on the mythical world of Iyo.

Iyo was the chosen battleground for three reasons, it was the Sovereignty Citadel-world and their stronghold holdout against what was a steady advance made by the allied forces. The next reason was that Iyo was one of a handful of planets with an ancient warp conduit that could (in theory) open a intermediate portal from the Cerberus Galaxy to Adventos, the Home-galaxy of the Cybros and thirdly, it was to draw the Federation/Combine forces further away from known space.

Leading the Allied Forces were Terrance Aubrey, Admiral Sheperd, and Executor Dela'core Falligus. Leading the Sovereignty forces were the QUeen Thayssa Jin, followed by her lieutenants Thel Nor and Jyur Huy.

The consequences of this battle were great, for it played an indirect part in the collapse of the Federation, the Combine and the Sovereignty as political powers, followed by being a tactical victory for the larger and more dangerous Dominion that were free to do as they wished.

By the time of the Eternal War, this battle was documented and revisited by modern historians and military instructors. It was later speculated that had the Dominion not arrived and manage to deal such a heavy blow to the then-victorious allied forces that it would have resulted in a combined Reteran-Human superpower that would have ruled the Cerberus Galaxy for the next several centuries.

## Background

### Prelude

The Battle of Iyo began as a conflict for space dominance over the world, with the Combine Ships under Dela'core Falligus engaging the Cybros blockade under Thel Nor. The Combine ships were more then up to the task of breaking the blockade, being the veterans of many battles and being lead by Phase himself, the Federation First Fleet came shortly after with the FSS Redemption leading the charge and was able to flood through a gap in the Cybros defense-lines, with the smaller and multi-purpose human ships combined with the hard-hitting Corvanan warships proving to be a difficult match for the technological superior Cybros.