The Solomon Islands campaign was a major campaign of the Pacific War of World War II. The campaign began with Japanese landings and occupation of several areas in the British Solomon Islands and Bougainville, in the Territory of New Guinea, during the first six months of 1942. The Japanese occupied these locations and began the construction of several naval and air bases with the goals of protecting the flank of the Japanese offensive in New Guinea, establishing a security barrier for the major Japanese base at Rabaul on New Britain, and providing bases for interdicting supply lines between the Allied powers of the United States and Australia and New Zealand. The Allies, to defend their communication and supply lines in the South Pacific, supported a counteroffensive in New Guinea, isolated the Japanese base at Rabaul, and counterattacked the Japanese in the Solomons with landings on Guadalcanal (see Guadalcanal campaign) and small neighboring islands on 7 August 1942. These landings initiated a series of combined-arms battles between the two adversaries, beginning with the Guadalcanal landing and continuing with several battles in the central and northern Solomons, on and around New Georgia Island, and Bougainville Island. In a campaign of attrition fought on land, on sea, and in the air, the Allies wore the Japanese down, inflicting irreplaceable losses on Japanese military assets. The Allies retook some of the Solomon Islands (although resistance continued until the end of the war), and they also isolated and neutralized some Japanese positions, which were then bypassed. The Solomon Islands campaign then converged with the New Guinea campaign. Background Strategic background On December 7, 1941, after failing to resolve a dispute with the United States over Japan's actions in China and French Indochina, the Japanese attacked the US Pacific fleet at Pearl Harbor, Hawaii. The surprise attack crippled most of the U.S. Pacific Fleet's battleships and started a war between the two nations. Attacks on British Empire possessions in the Pacific, beginning with an attack on Hong Kong almost simultaneously with the Pearl Harbor attack, brought the United Kingdom, Australia and New Zealand into the conflict. The Japanese sought to neutralize the U.S. and Royal navies, seize possessions rich in natural resources, and obtain strategic military bases to defend their far-flung empire. In the words of the Japanese Navy's Combined Fleet Secret Order Number One, dated November 1, 1941, the goals of the initial Japanese campaigns