The battle that was demonstrated had Vega battling Scrin units, from basic strike units (which are sort of like alien dogs) to more advanced archons. To bring in reinforcements, you have to seize Tiberium nodes on the battlefield. Each node lets you bring in a squad of your choice, including regular infantry, missile infantry, Titan mechs, and Orca air units. If some of those units seem familiar, they're taken from the RTS game (not surprisingly).

If a unit is destroyed, that's no problem, either. "Your squads are not your health bar; they're expendable," Plummer said. "If you lose a squad, it's not the end of a mission. You can just order reinforcements and bring in a different squad, or bring in the same squad and try a different tactic. This gives the player a lot of choices."

Squads will be tied to the directional pad on your controller. You can control a maximum of four squads (one for each cardinal direction on the D pad). Issuing orders is context sensitive, it appears. Judging from what we saw during the demonstration, if you want your tanks to attack something, simply aim at the target in question and then hit the corresponding direction on the D pad for your tanks. Or if you want your infantry to move to a certain spot, point to that spot and then hit the corresponding D pad button for that squad. There's also an interactive battlefield map that you can call up to issue orders to your squads, if you prefer that traditional view.