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The Battle of Boralis was fought during the United Earth Directorate invasion of Braxis. The UED, aided by the Confederate Resistance Forces, sought to capture the Boralis, the planet's capital city, from the Terran Dominion.
Gerard DuGalle, Admiral of the United Earth Directorate's Expeditionary Force, ordered a captain, freshly revived by cryostims, to establish a ground base on Braxis, an ice planet fortified by the Terran Dominion. The captain was directly supervised by Vice Admiral Alexei Stukov, who told him that DuGalle was "actually quite personable."
The UED troops made contact with unknown terran forces on Braxis. Their leader, Lieutenant Samir Duran, of the Confederate Resistance Forces, offered an alliance with the UED. Vice Admiral Stukov was skeptical, as Duran could have no idea who the UED was. Duran explained that he was an enemy of the Terran Dominion, and any enemy of the Dominion was a friend of his. Stukov declared the Confederate Resistance Forces the first colonial conscripts of the UED.
Duran offered vespene gas to the UED, as well as guidance to a less-guarded pathway to Boralis. The Boralis command center was destroyed as a result. The UED acquired valuable data from Boralis. Duran used this data to plan an assassination attempt against Arcturus Mengsk while Mengsk was visiting Umoja.