Go up against US General Alexander - a specialist in base defence, whose inability to build tanks is offset by EMP missiles and cheaper Particle Cannons - and you've got yourself an interesting battle.

For example, play as Chinese General Kwai - an expert in armoured warfare - and you can build tanks cheaply and earn powerful bonus abilities, his weakness being that he can't recruit artillery units and aircraft are expensive. Each general is an expert in a particular field, with bonuses and special units available depending on their skills. To bolster what would otherwise be a thin expansion, EA has introduced a new single-player mode called Challenge for all intents and purposes a homage to Street Fighter that has you, as your choice of general, taking on eight other generals one at a time as you attempt to become the mother of all battlefield commanders.