Protoss Civil War (Episode III)

The Protoss Civil War was a major conflict fought between the Tassadar's allies and the Protoss Conclave.

Origins of the War
Origins of the conflict could be traced to the Zerg invasion of the Terran worlds, after Tassadar, Protoss Executor of his famed Expeditionary Fleet, refused to destroy the Terran worlds, attempting to save the Terrans instead of kill them, as the Conclave ordered.

After his defeat on Tarsonis, Tassadar was ordered to return to Aiur. However, he felt a powerful psionic call emanating from a remote ash world, Char. There he encountered a Dark Templar force under the command of Prelate Zeratul. Unfortunately, the Zerg Swarm and a Terran Dominion Alpha Squadron detachment were in the planet as well. After some battles against the Dominion and the Zerg Queen of Blades and some alliances with the Dark Templar Zeratul and the Terran Jim Raynor, his forces were finally crushed by the Kerrigan's elite brood, leaving Tassadar and his new Terran ally trapped in a space platform, and the Dark Templar Prelate trapped in a old Dominion underground installation.

Then, most of the Zerg travel to Aiur to conquer it, leaving only a few broods under to command of Sarah Kerrigan in the now Zerg base of operations.

The weakness of the Zerg
In a attempt to defeat the Zerg on Aiur, Tassadar contacted Judicator Aldaris and told him about the Cerebrates, an important part of the Zerg hierarchy. The Judicator sent to the new Executor, Artanis, to deal with the Baelrog Cerebrate, Gorn. However, while the attack against the Brood was succesful, the attack on the Cerebrate didn't work, as it could come back to life. The poor protoss strategy also resulted in the loss of Praetor Fenix.

The Conclave, now considering Tassadar as a traitor to the Protoss race, attempted to arrest him, but the plot went awry when he convinced the Executor to join him and rescue Zeratul and his Dark Templar from zerg captivity.

The War erupts
A civil war erupted when Tassadar brought the Dark Templar, the very warriors who could destroy the Cerebrates, to Aiur. The Vanguard of Aiur, led by the Conclave, attacked Tassadar's forces attempting to arrest him and Artanis. However, the Protoss rebels managed to break out the Conclave defenses and destroy the Khor-shakal. Many members of the Conclave died in this battle, thus starting the beginning of the end of the Protoss government.

However, Tassadar surrender himself to the Conclave's forces, as him couldn't see his own brethren fighting themselves. Then, Judicator Aldaris appeared and arrested the renegade.