After the infestation of the zerg and subsequent obliteration at the hands of the Protoss, the Kel-Morian prospectors discovered a unique mineral on the twin colony worlds of Mar and Chau Sara. A siege on the Sara system saw it secured in the name of the Kel-Morian Combine.
Having captured the planet they were after, a task force was established to counter Dominion control while aiding those who opposed its tyranny. Discontent with the brutality of Mengsk’s tyrannical rule, the Umojan Protectorate offered assistance to the Combine.
The Terran Dominion discovered this treachery from their former ally and greatest competitor, and sent their most fearsome weapon, a Psi Emitter, to the Kel-Morian Capitol world, Moria.
The resulting Zerg invasion saw chaos engulf the world. Quarantine Zones were established, trade networks crumbled, and the stock market collapsed.
The Kel-Morian Combine had sold off its frontier planets and mining operations as a result.
General Mah Sakai learned of the Dominion’s part in the infestation of Moria and set his contingency in motion, the order “Burning Ground”.
The Second Guild War began on the premise of eye for an eye and tooth for a tooth.
The Dominion had not finished in their punishment of the Combine but did not wish to openly acknowledge their use of the Psi Emitter. Likewise, the Kel-Morian Combine was now too weak to field their own forces, but still had enough liquid assets to hire an army.
The Mining Guilds of the old war were replaced with Mercenary Guilds as this new proxy war unfolded. It was not a war of principles or freedom, it was a war that would be won by the highest bidder.