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​​🔗=============================> The World War II Japan Module <===​================​==​========​🔗
subpages:  Overview     Japan Ascendant     Japan Lashes Out     Japan Overreaches     South & Southwest Pacific​
                    North Pacific    Central Pacific    Philippines Liberated​​     Iwo Jima & Okinawa    Japan Overpowered
                    Pacific Base Areas     Navy War     Ground War     Air Force War     China-Burma-India Theater
​   ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
🔗======================>> The WWII Japan > Central Pacific  Submodule <<======================🔗
subpages:    Gilbert Islands  ​ Marshall Islands   ​Mariana Islands   ​Marianas Naval War   Palau Islands
other links:  Naval War with Japan
​
  ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Picture
Picture
The Beach at Tarawa
The Beach at Tarawa
WWII Hub
bigpigeon.us webpage WWII Japan > Central Pacific, © 2025 by Robert A. Christiansen, updated by RAC 2 Jun 2025
​

During Central Pacific operations from November 1943 to November 1944, US forces overwhelmed Japanese defenders in the Gilbert, Marshall, Mariana, and Palau islands. 
​Some webpages herein are incomplete.
Background
In June 1942, American success at the Battle of Midway stopped Japanese advances in the Central Pacific area.
  • However, several factors, such as the shortage of aircraft carriers and the need to defend Australia, argued against quick follow-up US landings in the Central Pacific, where the large distance between island chains made it difficult to provide land-based air support for amphibious actions.
  • For the next seventeen months, except for the expulsion of Japanese forces from the Aleutian Islands, the Pacific War focussed on a smaller area in the South and Southwest Pacific. 
  • US offensive operations in the Central Pacific area began in November 1943.
The Central Pacific, November 1943 - November 1944
Each of the four major central Pacific operations included amphibious landings by a mixture of Marine Corps and Army units in a different island chain. Landings were preceded by naval bombardments and subsequent land operations were supported by carrier-based aircraft.
  1. November 1943, Tarawa and Makin, atolls in the Gilbert Islands.
  2. January-February 1944, Kwajalein and Eniwetok, larger atolls in the Marshall Islands.
  3. June-August 1944, Saipan, Guam and Tinian, large islands in the Mariana Islands.
  4. September-November 1944, Anguar and Peleliu, small volcanic islands in the Palau Islands.
In a year, US forces in the Central Pacific advanced nearly 3,000 miles from Tarawa to Peleliu.
​Locating the Central Pacific Operations
Looking at the right part of the accompanying map, one can imagine these four islands chains noted above form the corners of of a tilted rectangle:
  • The Mariana Islands - the upper left corner.
  • The Marshall Islands - the upper right corner.
  • The Gilbert Islands - the lower right corner.
  • The Palau Islands - the lower left corner.
In the middle of the rectangle, note the main Japanese base at Truk, now known as Chuuk, in the Caroline Islands. Although Truk was attacked by air and sea, most of the Caroline Islands did not witness land combat.
WW II - The Central Pacific
WWII - The Central Pacific

timeline summarizing major Central Pacific amphibious operations, with invasion month and number of US dead
Gilbert Islands (extreme right on this map):
  • Nov '43 - Tarawa Atoll (~1000 marine dead)
  • Nov '43 - Makin Atoll (66 army & 700 navy dead)
Marshall Islands (north of the Gilberts):
  • Jan '44 -  Kwajalein & Roi-Namur (~431 dead)
  • Feb '44- Eniwetok (~390 dead)
Mariana Islands (northwest of the Marshalls):
  • Jun '44 - Saipan (3,426 dead)
  • Jul '44 - Guam (1,783 dead)
  • Jul '44 Tinian (326 dead)
Palau Islands (southwest of the Marianas):
  • Sep '44 - Peleliu (2,336 dead)
  • Sep '44 - Anguar (260 dead)
Central Pacific June 1944
Central Pacific June 1944
With the benefit of hindsight, many military historians now believe the costly Gilbert and Palau islands operations should have been avoided. Most would agree that the Marshall and Mariana islands operations were necessary.
Sources for Big Pigeon's WWII Japan > Central Pacific webpage:
  • The Beach at Tarawa header photo is courtesy of the National World War II Museum in New Orleans, LA.
  • The WWII - The Central Pacific map was found at https://www.ibiblio.org/hyperwar/USA/USA-P-Strategy/Strategy-22.html.
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