Another epic RTS/simulation hybrid covering the fight between the Allies and the Japanese in the Pacific during WWII comes nipping at the heels of Battlestations: Midway. Unlike its fun-but-slightly-dumbed-down arcadey cousin, the emphasis in Pacific Storm: Allies is on the astounding scale of the conflict, and on fiddly real-time strategy rather than shooting things to pieces in person.
The concept is great: a Total War-style strategic recreation of the war, with you controlling all building and construction options on the zoomed-out map, and then taking control of individual battles as you and the enemy clash over control of individual territories.