My life during World War 2 in Singapore

When Japanese first enter Singapore, they undergo operation "Sook Ching". The Japanese set up "screening centers" all over Singapore to gather and "screen" all Chinese males between 18 - 50. Some that were assume to be "anti japanese" were killed. Sometimes even some females and child were "screened". The Japanese or military police arrested those alleged to be anti-Japanese, meaning those who were singled out by informers or who were teachers, journalists, intellectuals, or even former servants of the British. All of the "anti japanese" were sent to prison, innocents who were recognized as "anti japanese" was also spend to prison. Most of the them was also executed.Those who passed the test will be given a piece of white paper bearing the word "Examined" or have a square ink mark stamp on their arm, those who failed will be given a triangle stamp.Anti Japanese were sent to killing sites with trucks and are killed in batches

http://en.wikipedia.org/wiki/Sook_Ching_massacre