3rd Terran Fleet
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The 3rd Terran Fleet is based in the highly-populated Capella system. The flagship of the 3rd Fleet, the GTD Aquitaine, played a large role in the crushing of the Neo-Terran Front rebellion and the Second Shivan Incursion. It is not known which other ships are in the 3rd Fleet, but it can be assumed that the GTD Messana, GTD Carthage and GTD Phoenicia are assigned to the fleet.
The 3rd Terran Fleet is known to have played a role in the Battle of Deneb, the Shivan Nebula and the final destruction of the Neo-Terran Front. It is said in the ending cutscene that a majority of the fleet (whether or not it was referring to the entire GTVA fleet or the 3rd Fleet individually is not known) was destroyed in the Second Shivan Incursion.