Here's a trailer from Act of Aggression showing off the U.S. faction from the upcoming real-time strategy game. They say: "The US Army are a tough veteran force taking advantage of heavy specialization, with some of the strongest individual units in the game. What it lacks in versatility it more than makes up for in brute force - especially when it comes to the M1A1 Abrams Tusk, an upgradable battle tank to be reckoned with."