Borneo campaign (1945)


Borneo campaign (1945)
Borneo Campaign (1945)
Part of World War II
Borneo Campaign CMH.jpg
A map showing the progress of the Borneo Campaign
Date 1 May - 1 August 1945
Location Borneo
Result Allied victory; the Japanese are pushed further from Australia
Belligerents
Australia Australia
United States United States
 Netherlands
 United Kingdom
 Empire of Japan
Commanders and leaders
Australia General Leslie Morshead

United States Admiral Thomas Kinkaid

Japan Vice-Admiral Michiaki Kamada
Japan Lieutenant-General Baba Masao
Strength
35,000 15,000
Casualties and losses
About 8,000 10,000

The Borneo Campaign of 1945 was the last major Allied campaign in the South West Pacific Area, during World War II. In a series of amphibious assaults between 1 May and 21 July, the Australian I Corps, under General Leslie Morshead, attacked Japanese forces occupying the island. Allied naval and air forces, centred on the U.S. 7th Fleet under Admiral Thomas Kinkaid, the Australian First Tactical Air Force and the U.S. Thirteenth Air Force also played important roles in the campaign. They were resisted by Imperial Japanese Navy and Army forces in southern and eastern Borneo, under Vice-Admiral Michiaki Kamada, and in the north west by the Thirty-Seventh Army, led by Lieutenant-General Baba Masao.

The plans for the Allied attacks were known collectively as Operation Oboe. The invasion of Borneo was the second stage of Operation Montclair, which was aimed at destroying Japanese forces in, and re-occupying the Netherlands East Indies, the southern Philippines, Sarawak and British Borneo.

Although the Borneo campaign was criticised in Australia at the time and in subsequent years, as pointless or a "waste" of the lives of soldiers, it did achieve a number of objectives, such as increasing the isolation of significant Japanese forces occupying the main part of the Dutch East Indies, capturing major oil supplies and freeing Allied prisoners of war, who were being held in increasingly worse conditions (see, for example, the Sandakan Death Marches and Batu Lintang camp articles).

The initial Allied plan comprised six stages: Operation Oboe 1 was to be an attack on Tarakan; Oboe 2 against Balikpapan; Oboe 3 against Banjermasin; Oboe 4 against Surabaya or Batavia (Jakarta); Oboe 5 against the eastern Netherlands East Indies; and Oboe 6 against British Borneo (Sabah). In the end only the operations against Tarakan, Balikpapan and British Borneo—at Labuan and Brunei Bay—took place.[1] The campaign opened with Oboe 1, with a landing on the small island of Tarakan, off the north east coast on 1 May 1945. This was followed on 10 June 1945 by Oboe 6: simultaneous assaults on the island of Labuan and the coast of Brunei, in the north west of Borneo. A week later, the Australians followed up with attacks on Japanese positions around Weston on the north-eastern part of Brunei Bay. The attention of the Allies then switched back to the central east coast, with Oboe 2, the last major amphibious assault of World War II, at Balikpapan on 1 July 1945.

These operations ultimately constituted the last campaigns of Australian forces in the war against Japan.

Battles

Notes

  1. ^ Dennis, 1995 p. 440

References

  • Dennis (et al.), Peter (1995). The Oxford Companion to Australian Military History. Melbourne: Oxford University Presd. 

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