After the Japanese surrender in 1945, the Royal Navy occupied the fort in 1946 and its guns were manned by the 1st Malay Coast Battery and Royal Artillery. Gurkha detachments from British India took over manning the guns when the British gunners were withdrawn and the 1st Malay Coast Battery was disbanded sometime later in 1946. During the Konfrontasi period between Sukarno's Indonesia and the Malaysian Federation from 1963 to 1965, Fort Siloso was manned by the 10th Gurkha Rifles to prevent Indonesian military-trained saboteurs from landing on Sentosa and Keppel Harbour slightly inland.