After the defeat of the Overmind, the Zerg leadership got incapacitated and all hell broke loose. Now a newly born cerbrate; young in it's life, and with a small force held out against fellow beings, the Protoss and the Terrans. He could control his small force without much trouble, owing to it's youth and size of brood. Now another cerbrate grew in power and threatened his existence. He fled from the Tarsonis, and arrived at Mirach III, a livable planet which was also uninhabited by sentient life.

After the detection of Aiur, a group of religious fanatics (Sect: Zing Naza), dubbed by fellow Protoss as cowards and traitors escaped from the incoming Zerg by circumventing the entire attack force. They saw the fall of their citadels. They made a short halt at Tarsonis. However, the Zerg and the remaining Confederates harassed them, and they were on thier way again. The small force got into a small tangle with some Zerg who were late for the invasion party, which left their vessels damaged. They touched down at the nearest inhabitable planet for repairs - Mirach 3.

After the break - up of the Confederates, and the defection of Edmund Duke; the individual regiments and segments of the erstwhile army battled for survival. Survival against Emperor Arcturus, against the Zerg, against each other. The Upsilon (20th) squad of the Confederate army escaped from the remains of Tarsonis into deep space. Everyone thought they were a bunch of un-inhibited (read manual about marines) rogues, cut-throats, pirates and assasins. Everyone thought they would fight and kill each other. No one had thought of honour among thieves. They escaped. Being looked down upon by other 'better' squadrons; they were relegated to cheap rusty machines. Even the General's battlecruiser was a nineteen year - five month old relic! The ship's impulse engines gave way; and the computer took over for a controlled crash route to the nearest inhabited planet - Mirach III.