The British army surrendered Singapore to the Japanese forces at the Ford Factory in Bukit Timah on 15 February 1942.
The annual Total Defence Day is picked on this date to remind Singaporeans of the sufferings of our forefathers during World War II and what we stand to lose if we are unable to defend ourselves.
The sirens on the Public Warning System (PWS) will also go off for a minute at 6.20pm - the historical time that the British surrendered to the Japanese.
Total Defence is the name of Singapore's comprehensive defence strategy, based on the understanding that besides military action, aggressors can also attack the country by wrecking its economic systems, tearing its social fabric apart, targeting Singaporeans' beliefs and commitment to defence, and its ability to recover from disasters, both natural and man-made.
The Total Defence concept encompasses five key aspects – military, civil, economic, social and psychological defence – and focuses on the need for each Singaporean to play his or her part to defend the nation.