There are a ton of new units to see here not least of which are the new carriers used by the Japanese. The unit model is in keeping with the historical Japanese flattop design. There's no tower cluttering up the decks here. The carrier also introduces the Japanese Zero fighter, which will combat for control of the skies with a new Allied unit, the SBD Dauntless. (Technically the Dauntless is a dive-bomber and not a fighter, but it makes a nice sentence, don't you think?) PBY Catalinas act as scout planes and help you locate the Japanese carriers.