In World War II, the American strategy was, primarily, "Europe First". Most of the troops, and the majority of the aircraft, were devoted to winning the war against Germany. Japan, Roosevelt thought, could be left to simmer on its own.
However, there were substantial Navy forces that weren't especially required for the European conflict, and so Navy forces were used in the Pacific. Following the victory in the Battle of Midway (June 1942) the Japanese were on the defensive; after losing four aircraft carriers, they really didn't have much offensive capability. The primary strategy there was "island hopping"; destroy and occupy only the important islands (the ones with airfields) and bypassing and isolating the more lightly-fortified islands.
Island hopping
island hopping
To concentrate on fighting the Japanese in the Pacific
The strategy was known as island hopping.
They were fighting against Nazi control of the European mainland as well as against Japanese influence within the Pacific theatres of war .
American soldiers were fighting on the European front against Germany (this front often includes those fighting in Africa) and the Pacific front against Japan.
"island hopping" across the south Pacific while bypassing Japanese strongholds.
Island Hopping.
"Island Hopping" .
Australia fought with Great Britain and her ally the USA. They fought against the Japanese Empire and Nazi Germany but the majority of Australia's fighting was based in the Pacific.
Lack of weapons was not an issue that made fighting difficult in the Pacific theater.
Lack of weapons was not an issue that made fighting difficult in the Pacific theater.