Sook Ching was a mass killing that occurred from 18 February to 4 March 1942 in Singapore after it fell to the Japanese. It was a systematic purge and massacre of 'anti-Japanese' elements in Singapore, with the Singaporean Chinese particularly targeted by the Japanese army during the occupation. However, Japanese soldiers engaged in indiscriminate killing and did not try to identify who was 'anti-Japanese.' Singapore was a crucial strategic point in World War II. From 8 February to 15 February, the Japanese fought for control of the city. The combined British and Commonwealth forces surrendered in a stunning defeat to the outnumbered Japanese on 15 February which led to its fall. The loss of Singapore was and still is Britain's largest surrender in history.
Three days later after the fall, on 18 February, the occupying Japanese military began mass killings of a wide range of "undesirables", who were mostly ethnic Chinese, influenced by the events of the Second Sino-Japanese War that was raging simultaneously as far back as 1937. The operation was overseen by the Imperial Japanese Army's Kempeitai, its secret police. Along with Singapore, the Sook Ching was subsequently also extended to include the Chinese population in Malaya, which was also under occupation by the Japanese. Concurrently, non-Chinese individuals were also not completely spared in other parts of Asia under Japanese occupation. The Japanese also brutally subjugated civilians in Burma and Thailand, with estimates of up to 90,000 additional deaths. Many of these victims were also forced to work on the Siam–Burma Railway, infamously known as the Death Railway.
The aim for such a purge was to intimidate the Chinese community, which was considered by the Japanese to be potentially the main centre of resistance to Japanese aims of territorial expansion throughout the Asia-Pacific. The Japanese had also thought of it as a "revenge" for their perceived anti-Japanese activity in the Sinophone regions, such as procuring financial aid for China after the Japanese invasion of Manchuria and during the Second Sino-Japanese War. As a consequence, Sook Ching was aimed primarily at Chinese political and social activists, volunteers fighting on the side of the Allies, as well as representatives of Chinese triads. In practice, however, the arrests and executions were carried out by the Japanese in a completely arbitrary manner, with many civilians randomly killed in summary executions even if they took no part in any organised resistance. When mass graves were discovered in 1962, Singaporeans heavily lobbied for their government to demand compensation as well as an official apology from the Japanese government. On 25 October 1966, the Japanese government ultimately agreed to reimburse S$50 million in reparations, half of which constituting as a grant and the rest as a loan. No official apology was made. In Chinese languages, the term () means, among other things, "eradication" or "purge".
Planning of the massacre
According to postwar testimony taken from a war correspondent embedded with the 25th army, Colonel Hishakari Takafumi, an order to kill 50,000 Chinese, 20 percent of the total, was issued by senior officials on Yamashita's operations staff, either from Lieutenant Colonel Tsuji Masanobu, Chief of Planning and Operations, or Major Hayashi Tadahiko, Chief of Staff.
Hirofumi Hayashi, a professor of politics at a university and the co-director of the Center for Research and Documentation on Japan's War Responsibility, writes that the massacre was premeditated, and that "the Chinese in Singapore were regarded as anti-Japanese even before the Japanese military landed". It is also clear from the passage below that the massacre was to be extended to the Chinese in Malaya as well.