 In late June 1942, the Allies decided to seize bases in the southern Solomon Islands with the objective of denying their use by the Japanese to threaten the supply and communication routes between the U.S., Australia, and New Zealand. They also intended to use Guadalcanal and Tulagi as bases to support a campaign to eventually capture or neutralize the major Japanese base at Rabaul on New Britain. Admiral Nimitz committed much of the Pacific Fleet to the task, including three of his four carrier task forces. They fell under the command of the recently appointed Vice Admiral Robert L. Ghormley, commander of the South Pacific Area.
