Gilbert and Marshall Islands campaign

The Gilbert and Marshall Islands campaign were a series of battles fought from August 1942 through February 1944, in the Pacific theatre of World War II between the United States and Japan. They were the first steps of the drive across the Central Pacific by the United States Pacific Fleet and Marine Corps. The purpose was to establish airfields and naval bases that would allow air and naval support for upcoming operations across the Central Pacific. Operation Galvanic and Operation Kourbash were the code names for the Gilberts campaign (in modern Kiribati) that included the seizures of Tarawa and Makin, during the Battle of Tarawa on 20–23 November and the Battle of Makin on 20–24 November 1943. Operation Flintlock and Operation Catchpole were aimed at capturing Japanese bases at Kwajalein, Eniwetok, and Majuro in the Marshall Islands. The Imperial Japanese Navy occupied the Gilbert Islands three days after the attack on Pearl Harbor. They built a seaplane base on Makin and dispersed troops along the coastlines of the northern atolls to monitor the Allied forces' movement in the South Pacific. The Marshall Islands is located approximately 220 miles (350 km) northwest of the Gilbert Islands and had been occupied by the Japanese since World War I as part of the South Seas Mandate. The Japanese regarded the islands as an important outpost for their navy. Allied commanders knew that an eventual surrender of Japan would require penetration of these islands. While General Douglas MacArthur, commander of the United States Army, wanted to push towards the Philippines via New Guinea, United States Navy Admiral Chester W. Nimitz favored a drive across the Central Pacific, leapfrogging through the Gilberts, the Marshalls, the Carolines, and the Marianas, which would put American B-29 bombers within range of Tokyo. In addition to forcing the Japanese to fight two fronts against the Allies (Nimitz driving from the east and MacArthur from the south), Nimitz's plan would neutralize the outer Japanese defenses, allowing American ground, naval, and air bases to be stationed there for future attacks against other occupied island groups.

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Related concepts (22)

Pacific Ocean theater of World War II

The Pacific Ocean theater of World War II was a major theater of the Pacific War, the war between the Allies and the Empire of Japan. It was defined by the Allied powers' Pacific Ocean Area command, which included most of the Pacific Ocean and its islands, while mainland Asia was excluded, as were the Philippines, the Dutch East Indies, Borneo, Australia, most of the Territory of New Guinea, and the western part of the Solomon Islands. It officially came into existence on March 30, 1942, when US Admiral Chester Nimitz was appointed Supreme Allied Commander Pacific Ocean Areas.

Butaritari

Butaritari is an atoll in the Pacific Ocean island nation of Kiribati. The atoll is roughly four-sided. The south and southeast portion of the atoll comprises a nearly continuous islet. The atoll reef is continuous but almost without islets along the north side. Bikati and Bikatieta islets occupy a corner of the reef at the extreme northwest tip of the atoll. Small islets are found on reef sections between channels on the west side. The lagoon of Butaritari is deep and can accommodate large ships, though the entrance passages are relatively narrow.

Battle of Tarawa

The Battle of Tarawa was fought on 20–23 November 1943 between the United States and Japan at the Tarawa Atoll in the Gilbert Islands, and was part of Operation Galvanic, the U.S. invasion of the Gilberts. Nearly 6,400 Japanese, Koreans, and Americans died in the fighting, mostly on and around the small island of Betio, in the extreme southwest of Tarawa Atoll. The Battle of Tarawa was the first American offensive in the critical Central Pacific region.