# Operation FS

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1942 Japanese planned military offensive in the South Pacific

Operation FS Imperial Japanese advances in the Southwest Pacific and Southeast Asia areas during the first five months of the Pacific campaign Planned July–August 1942 Objective Occupation of Fiji, American Samoa, Samoa, and New Caledonia Outcome Cancelled in June 1942

v t e Pacific War East Asia China Japan Manchuria Southeast Asia French Indochina Thailand Malaya Burma Philippines (1941–1942) Dutch East Indies Philippines (1944–1945) Borneo Pacific Ocean Hawaiian Islands Wake Island New Guinea Solomon Islands Aleutian Islands Gilbert and Marshall Islands Mariana and Palau Islands Indian Ocean Japanese merchant raids Andaman Islands Homfreyganj massacre Christmas Island 1st Indian Ocean Ceylon Bay of Bengal 2nd Indian Ocean North America Ellwood Aleutian Islands Estevan Point Lighthouse Fort Stevens Lookout Air Raids Fire balloon bombs Project Hula PX

**Operation FS** was the [Imperial Japanese](/source/Empire_of_Japan) plan to invade and occupy [Fiji](/source/Fiji), [American Samoa](/source/American_Samoa), [Samoa](/source/Western_Samoa_Trust_Territory), and [New Caledonia](/source/New_Caledonia) in the South Pacific during the [Pacific conflict](/source/Pacific_War) of [World War II](/source/World_War_II). The operation was set to be executed in July or August 1942 following [Operation MO](/source/Operation_Mo), [Operation RY](/source/Operation_RY), and [Operation MI](/source/Battle_of_Midway).

*FS* was to be a joint effort between the [Imperial Japanese Navy](/source/Imperial_Japanese_Navy) and the [Imperial Japanese Army](/source/Imperial_Japanese_Army). The primary goal of Operation FS was to, following the completion of *MO*, *RY*, and *MI*, cut the [supply](/source/Military_supply_chain_management) and [communication lines](/source/Line_of_communication) between Australia and the United States, with the goal of reducing or eliminating Australia as a base to threaten Japan's perimeter defenses in the South Pacific.

Operation FS was postponed following the Japanese setback at the [Battle of the Coral Sea](/source/Battle_of_the_Coral_Sea), then cancelled after the Japanese defeat at the [Battle of Midway](/source/Battle_of_Midway), following the losses of four Japanese fleet carriers. The land forces originally dedicated for Operation FS, namely the [17th Army](/source/Seventeenth_Army_(Japan)), were instead reassigned to a subsequently unsuccessful reattempt to take [Port Moresby](/source/Port_Moresby), part of the original goal for Operation MO, and to defend the Solomon Islands from [Allied offensives](/source/Solomon_Islands_campaign).

## See also

- [Proposed Japanese invasion of Australia during World War II](/source/Proposed_Japanese_invasion_of_Australia_during_World_War_II)

## Bibliography

### Books

- Dull, Paul S. (1978). [*A Battle History of the Imperial Japanese Navy, 1941-1945*](https://archive.org/details/battlehistoryofi0000dull). Naval Institute Press. [ISBN](/source/ISBN_(identifier)) [0-87021-097-1](https://en.wikipedia.org/wiki/Special:BookSources/0-87021-097-1).

- Hayashi, Saburo (1959). *Kogun: The Japanese Army in the Pacific War*. Marine Corps Association. ASIN B000ID3YRK.

- Lundstrom, John B. (2006). *Black Shoe Carrier Admiral: Frank Jack Fletcher at Coral Sea, Midway, and Guadalcanal*. Annapolis, Maryland: Naval Institute Press. [ISBN](/source/ISBN_(identifier)) [1-59114-475-2](https://en.wikipedia.org/wiki/Special:BookSources/1-59114-475-2).

- Parshall, Jonathan; Tully, Anthony (2005). [*Shattered Sword: The Untold Story of the Battle of Midway*](https://archive.org/details/shatteredswordun0000pars). Dulles, VA: Potomac Books. [ISBN](/source/ISBN_(identifier)) [1-57488-923-0](https://en.wikipedia.org/wiki/Special:BookSources/1-57488-923-0).

- Rottman, Gordon L. (2005). *Japanese Army in World War II: Conquest of the Pacific 1941-42*. Oxford: Osprey. [ISBN](/source/ISBN_(identifier)) [1-84176-789-1](https://en.wikipedia.org/wiki/Special:BookSources/1-84176-789-1).

- Willmott, H. P. (1983). [*The Barrier and the Javelin: Japanese and Allied Pacific Strategies February to June 1942*](https://archive.org/details/empiresinbalance00will). Annapolis, Maryland: Naval Institute Press. [ISBN](/source/ISBN_(identifier)) [0-87021-535-3](https://en.wikipedia.org/wiki/Special:BookSources/0-87021-535-3).

- Willmott, H. P. (2002). *The War with Japan: The Period of Balance, May 1942 – October 1943*. [Wilmington, Delaware](/source/Wilmington%2C_Delaware): Scholarly Resources Inc. [ISBN](/source/ISBN_(identifier)) [0-8420-5032-9](https://en.wikipedia.org/wiki/Special:BookSources/0-8420-5032-9).

### Web

- Bullard, Steven (translator) (2007). [*Japanese army operations in the South Pacific Area New Britain and Papua campaigns, 1942–43*](http://ajrp.awm.gov.au/ajrp/ajrp2.nsf/088031725e4569e4ca256f4f00126373/1fcb61d633972daaca257291000abf44?OpenDocument). Canberra: Australian War Memorial. [ISBN](/source/ISBN_(identifier)) [978-0-9751904-8-7](https://en.wikipedia.org/wiki/Special:BookSources/978-0-9751904-8-7). {{[cite book](https://en.wikipedia.org/wiki/Template:Cite_book)}}: |first= has generic name ([help](https://en.wikipedia.org/wiki/Help:CS1_errors#generic_name))

- [*Japanese Operations in the Southwest Pacific Area, Volume II - Part I*](https://web.archive.org/web/20090208191627/http://history.army.mil/books/wwii/MacArthur%20Reports/MacArthur%20V2%20P1/macarthurv2.htm#contents). Reports of General MacArthur. [United States Army Center of Military History](/source/United_States_Army_Center_of_Military_History). 1994. Archived from [the original](http://www.history.army.mil/books/wwii/MacArthur%20Reports/MacArthur%20V2%20P1/macarthurv2.htm#contents) on 2009-02-08. Retrieved 2006-12-08.

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