Order of Battle: U.S. Marines puts players in control of the elite U.S. military branch which proved essential in the Allied victory over Japan. This new expansion follows the story of the U.S. Marine Corps during the island hopping campaign of 1942-1945. As the fighting progresses across small, isolated jungle islands, the Japanese adapt their strategy from ruthless assaults to deep, well-prepared defensive systems - determined to hold on and fight to the last man.