Originally Posted by Gamespot Review
Most of the action takes place on the bottom screen, where you may either use the directional pad and buttons or the stylus to move your units around. However, in dual-screen battles, there's combat happening on two separate maps at once. Once you're done maneuvering your forces on the main screen, the battle switches over to the second front, where the computer will move your forces by default. However, you can command them yourself if you like. Usually the two fronts are linked somehow, and whoever wins the battle on the second front will gain an advantage on the primary front. You can send units to the secondary front to help guarantee that happening. The dual-screen battles are a nice twist to the tag-battle gameplay that's the mainstay of Advance Wars: Dual Strike.
