Theremo Corp is a faction that seeks leadership on earth. To manage that they've spended years on a new energy type (theremo energy). To do that they drained the earths energy(kind like FF7 lifestream) and used it for new technology that is much effective then the older technology still used by the EUR.

Theremo Corp mainly uses High tech weaponry to pursade the world leaders to give them leadership over the earth. They are sure their new laser weapons are gonna get them there, but they got 1 problem....Xetra.
Their weaponry hasen't been fully tested and ain't ready for the strike they were preparing. So they hope the army they now have is enough to hold off the aliens.