The Talus Air Force? Well its mainly fighter/bombers from Spacecraft. Most military bases have a Vishna (Talus Fight/Bomber Class in production) squadron on site, but not more then four squads of five. Mind you, Matthias, a Hound has shields and an auto-turret as well, some Commanders have purchased upgrades for their tanks, but not all.
The Talus Army is beginning to implement a system, by which Talisian soldiers can purchase extra equipment (on top of the basic provided stuff), through a Kill Count, at their leisure; to enhance their fighting potential. The system is currently used in the Talus 'Air Force' as you would call it, as a way to motivate soldiers to not only defeat the enemy, but to also keep trooper occupied discussing combinations of equipment that can be made to give a soldier the best chance at getting a kill.
Now, of course, The Talisian Army and Navy aren't currently invading any systems of planets, so the system is limited to war games, where soldiers receive smaller amounts for each 'kill'. Example: Soldier A shoots Soldier B during a war game, instead of getting credit equal to that of killing a real Kallum Soldier, Soldier A would get either half a credit, or a credit towards a more limited array of equipment and weapons.
And yes, Aro, Talus ships have the ability to sustain themselves while inside the atmosphere of a planet, but they must constantly be moving or Gravity would slowly over-come their self-propulsion systems, kind of like a plane has to keep moving or it crashes, but the ships wouldn't fall quite as fast.
::EDIT::
I'm also working on a post, it'll be up later tonight or tomorrow morning at the latest 
George Smith Patton
"No bastard ever won a war by dying for his country. He won it by making the other poor dumb bastard die for his country."