Before 1939 the Kranji area was a military camp and at the time of the Japanese invasion of Malaya, it was the site of a large ammunition magazine. On 8 February 1942, the Japanese crossed the Johore Straits in strength, landing at the mouth of the Kranji River within two miles of the place where the war cemetery now stands. On the evening of 9 February, they launched an attack between the river and the causeway. During the next few days fierce fighting ensued, in many cases hand to hand, until their greatly superior numbers and air strength necessitated a withdrawal. After the fall of the island, the Japanese established a prisoner of war camp at Kranji and eventually a hospital was organised nearby at Woodlands. After the reoccupation of Singapore, Kranji War Cemetery was developed from a small cemetery started by the prisoners at Kranji, by the Army Graves Service. Within Kranji War Cemetery stands the SINGAPORE MEMORIAL, bearing the names of over 24,000 casualties of the Commonwealth land and air forces who have no known grave. Many of these have no known date of death and are accorded within our records the date or period from when they were known to be missing or captured. The land forces commemorated by the memorial died during the campaigns in Malaya and Indonesia or in subsequent captivity, many of them during the construction of the Burma-Thailand railway, or at sea while being transported into imprisonment elsewhere. The memorial also commemorates airmen who died during operations over the whole of southern and eastern Asia and the surrounding seas and oceans. In addition to the Singapore Memorial, the cemetery also contains the following memorials:-

The SINGAPORE (UNMAINTAINABLE GRAVES) MEMORIAL, which stands at the western end of the Singapore Memorial, commemorates more than 250 casualties who died in campaigns in Singapore and Malaya, whose known graves in civil cemeteries could not be assured maintenance and on religious grounds could not be moved to a war cemetery.

The SINGAPORE CREMATION MEMORIAL, which stands immediately behind the Singapore Memorial, commemorates almost 800 casualties, mostly of the Indian forces, whose remains were cremated in accordance with their religious beliefs.

The SINGAPORE CIVIL HOSPITAL GRAVE MEMORIAL stands at the eastern end of the Singapore Memorial. During the last hours of the Battle of Singapore, wounded civilians and servicemen taken prisoner by the Japanese were brought to the hospital in their hundreds. The number of fatalities was such that burial in the normal manner was impossible. Before the war, an emergency water tank had been dug in the grounds of the hospital and this was used as a grave for more than 400 civilians and Commonwealth servicemen. After the war, it was decided that as individual identification of the dead would be impossible, the grave should be left undisturbed. The grave was suitably enclosed, consecrated by the Bishop of Singapore, and a cross in memory of all of those buried there was erected over it by the military authorities. 108 Commonwealth military casualties buried in the grave are commemorated on the Singapore Civil Hospital Grave Memorial.

Kranji War Cemetery and the Singapore Memorial were designed by Colin St Clair Oakes. The memorial was unveiled by Sir Robert Black, Governor of Singapore, on the 2nd March 1957.

Adjoining Kranji War Cemetery is KRANJI MILITARY CEMETERY, a substantial non-world war site of 1,422 burials, created in 1975 when it was found necessary to remove the graves of servicemen and their families from Pasir Panjang and Ulu Pandan cemeteries.