Advance Wars 2: Black Hole Rising/Great Sea Battle

Green Earth's job is to provide air support to Orange Star.

Orange Star takes charge of the land campaign, where they are closest to one of the Black Cannons.

Yellow Comet is the closest to the factory, where they can sneak around and destroy the factory's pipe seam from a distance.

Green Earth

 * Eagle is a good choice for this battle due to how strong his air units are. Additionally, his Super CO Power, Lightning Strike, allows him to move twice in one turn, allowing him to destroy more units to get a better power score.
 * Drake can use his naval units well with extra movement, but his air units are very weak at only 70%. Additionally, his powers can easily be countered by Hawke's powers.
 * Jess has powerful ground units, but her other units are a little weak. However, the land campaign is in charge by Orange Star, not Green Earth.

Orange Star

 * Andy works well in this mission, particularly because of how he can counter Hawke's CO Powers with his healing abilities. Furthermore, he does not have any weak units, allowing him to take the Black Cannon nearest.
 * Max has strong direct combat units, but his indirect combat weakness means he will have a hard time taking the Black Cannon.
 * Sami does not have very strong direct units, but she can take the Black Cannon as easy as Andy. A 1.5x capture rate allows her to capture in 2 turns, even with Hawke's CO Powers.

Yellow Comet

 * Kanbei will have powerful units that can destroy the pipe seam easily, but it will take a little longer to produce due to the increased cost.
 * Sonja has average units, but with bad luck. However, bad luck does not apply when destroying structures, allowing her to purchase a little earlier.
 * Sensei has increased transport movement, allowing his units to reach the islands much quicker, but his vehicles are a little weak.