Pacific scenery is available through Cord's and other EAW sites.
Unzip and follow directions -- basically the terrain "tiles" (.TER files) are loaded into the EAW main directory. If EAW finds such files, it uses them in place of the default terrain (removing them reverts to default terrain). The Japanese Zero is also found on Cord's site -- its files replace those of one of the supplied German Fw-190 models.
Exhibit: A Citizen Soldier in the Air: Lt. Charles H. Cook in World War II, by Bruce Irving.
Comments: Lt. Charles H. Cook flew a B-24D named "Cookie" with the 90th Bombardment Group in the southwest Pacific in 1942-1943. At that time, Allied forces were greatly outnumbered, and Japanese invasion of New Guinea and Australia was a very real threat. Bruce Irving has interviewed Charlie Cook and composed this valuable record of his aviation career. The entire article is also available for free download here - Charles H. Cook.