British subject (short-lived) incorporation of Singapore within Malaysia between 1963 and 1965. Similar arrangements also existed for the other states and colonies that made make up the Federation of Malaya from 1948: they too introduced citizenship statuses (which eventually became Malayan and later Malaysian citizenship) before achieving independence in 1957. In most other Commonwealth countries, the term Commonwealth citizen was used instead of British subject. On 1 January 1983, upon the coming into force of the "British Nationality Act" 1981, every citizen of the United Kingdom and colonies became either a British citizen, British Dependent Territories citizen or British Overseas citizen. Use
Combat operations in 1965 during the Indonesia–Malaysia confrontation Combat operations in 1965 during the Indonesia–Malaysia confrontation The Indonesia–Malaysia confrontation began in early 1963 following Indonesia's opposition to the creation of Malaysia. In December 1964, a build-up of Indonesian forces on the Kalimantan border saw the British government commit significant forces from the UK-based Army Strategic Command and Australia and New Zealand deployed roulement combat forces from West Malaysia to Borneo in 1965–66. In January 1965, the first UK-based units (aside from air defence and special forces) arrived and after six weeks of jungle training, deployed on operations. The 1st Battalion Gordon Highlanders arrived first and became the thirteenth