Brunei revolt of Malaysia. The following units, or significant elements of them, deployed to Borneo in response to the rebellion before May 1963: Brunei revolt The Brunei revolt () was a December 1962 insurrection in the British protectorate of Brunei by opponents of its monarchy and its proposed inclusion in the Federation of Malaysia. The insurgents were members of the TNKU (North Kalimantan National Army), a militia supplied by Indonesia and linked to the leftwing Brunei People's Party (BPP), which favoured a North Borneo Federation. The TNKU began co-ordinated attacks on the oil town of Seria (targeting the Royal Dutch Shell oil
Brunei–Malaysia border and Sabah, Malaysia, on the other. All three territories were then ruled by Britain. The powers for the order in council were derived from the British Colonial Boundaries Act of 1895. Brunei and Malaysia still adhere to the British Orders in Council to define their territorial waters, where it was referred to in the Joint Statement made after the 18th Annual Leaders' Consultation between the Sultan of Brunei and Prime Minister of Malaysia on 3 November 2014 when reference was made to the Sarawak (Definition of Boundaries) Order in Council 1958 No 1518 as part of the boundary definition process