Antioch

Antioch was a Protoss province located on the world of Aiur, featuring a base seemingly of the same name. Judging by maps of the area, Antioch was situated in the southwest corner of a valley alongside a river.

Zerg Invasion
The Zerg invasion of Aiur devastated the planet and Antioch was no exception, experiencing numerous Zerg attacks. Two days after the invasion's conclusion proper (the manifestation of the Overmind, the outpost, under the command of Praetor Fenix, was on the edge of the abyss in terms of manpower and resources. As such, the Conclave ordered that Antioch be reinforced, as the first priority of the Protoss forces was to strengthen their defences.

First Battle of Antioch
Reinforcements under the leadership of a new Executor arrived at Antioch, having succesfully engaged numerous Zerg patrols in the lands surrounding it. Fortifying the base, the Protoss then launched a succesful counterattack against the Zerg Tiamat Brood forces which occupied the ridge to the north.

Second Battle of Antioch
"Executor! Antioch is under attack by overwhelming Zerg forces!"

- Fenix

While Protoss forces carried out an attackattack on the Zerg held province of Scion, Antioch fell under attack by overwhelming Zerg forces. The defence was not nearly as succesful as the first battle, Fenix being killed in the battle. It is unclear whether Antioch actually fell or not, but as Fenix's body was able to be recovered to be transplaneted into a Dragoon, it appears that the line was held.

Legacy
By the end of the war, Antioch had been reduced to a wasteland. It was likely abandoned when Aiur was evacuated. Its legacy can be said to live on in the base of New Antioch on Shakuras.