The Japanese-run camp at Batu Lintang in Borneo was liberated by the Australian 9th Division, averting the planned massacre of its 2,000-plus Allied POWs and civilian internees by four days.

The Imperial Japanese Army was the principal ground force of the Empire of Japan from 1871 to 1945. It played a central role in Japan’s rapid modernization during the Meiji period, fought in numerous conflicts including the First Sino-Japanese War, the Russo-Japanese War, World War I, the Second Sino-Japanese War, and World War II, and became a dominant force in Japanese politics. Initially formed from domain armies after the Meiji Restoration, it evolved into a powerful modern military influenced by French and German models. The IJA was responsible for several overseas military campaigns, including the invasion of Manchuria, involvement in the Boxer Rebellion, and fighting across the Asia-Pacific during the Pacific War. Notorious for committing widespread war crimes, the army was dissolved after Japan's surrender in 1945, and its functions were succeeded by the Japan Ground Self-Defense Force.

Batu Lintang camp at Kuching, Sarawak on the island of Borneo was a Japanese-run internment camp during the Second World War. It was unusual in that it housed both Allied prisoners of war (POWs) and civilian internees. The camp, which operated from March 1942 until the liberation of the camp in September 1945, was housed in buildings that were originally British Indian Army barracks. The original area was extended by the Japanese, until it covered about 50 acres. The camp population fluctuated, due to movement of prisoners between camps in Borneo, and as a result of the deaths of the prisoners. It had a maximum population of some 3,000 prisoners.

Borneo is the third-largest island in the world, with an area of 748,168 km² (288,869 sq mi), and population of 23,053,723. Situated at the geographic centre of Maritime Southeast Asia, it is one of the Greater Sunda Islands, located north of Java, west of Sulawesi, and east of Sumatra. The island is crossed by the equator, which divides it roughly in half. In Indonesia, the island is also known as Kalimantan, as well as the Indonesian region located on the island.