South Pacific Area

It originally encompassed the Ellice, Phoenix, Marquesas, Tuamotu, Samoa, Fiji, and New Hebrides island groups plus New Caledonia and New Zealand.

On September 20, 1942, six weeks after the first American amphibious operation of the war got underway at Guadalcanal, Vice Admiral Aubrey Fitch assumed command of Aircraft, South Pacific Force (AirSoPac).

Not a desk-bound admiral, he carried out numerous, hazardous flights into the combat zones, inspecting air activities and bases for projected operations.

[5] Rear Admiral Charles P. Mason was the first officer to hold the title ComAirSols; he assumed command on 15 February 1943 at Guadalcanal.

Actually, Mason took over a going concern, as he relieved Brigadier General Francis P. Mulcahy, who had controlled all aircraft stationed at the island during the final phase of its defense.

Pacific & Adjacent areas 1942.
Organization of South Pacific Forces just before Task One, the invasion of Guadalcanal