British Commonwealth Occupation Force

The British Commonwealth Occupation Force (BCOF) was the joint Australian, British, Indian and New Zealand military forces in occupied Japan, from 21 February 1946 until the end of occupation in 1952. At its peak, the BCOF comprised about 40,000 personnel, equal to about 25% of the number of US military personnel in Japan.

While US forces were responsible for military government, the BCOF was responsible for supervising demilitarisation and the disposal of Japan's war industries. The BCOF was also responsible for the occupation of the western prefectures of Shimane, Yamaguchi, Tottori, Okayama, Hiroshima and Shikoku Island. They were also supported by the Women's Auxiliary Service (Burma). BCOF headquarters was at Kure.

For most of the occupation period Australia contributed the majority of the BCOF's personnel. The initial BCOF presence included the Australian 34th Brigade; the 9th Brigade, 2nd New Zealand Expeditionary Force (J Force); and BRINDIV, a British/Indian division of two brigade groups: the British 5th Infantry Brigade Group (from 2nd Infantry Division in India), and the 268th Indian Infantry Brigade. Major General David Cowan commanded BRINJAP Division from 1945 to 1947. The position of commanding officer was always filled by an Australian: Lieutenant General John Northcott, February to June 1946; Lieutenant General Horace Robertson, June 1946 to November 1951, and Lieutenant General William Bridgeford from November 1951 until the end of the occupation.

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