Combat operations in 1964 during the Indonesia–Malaysia confrontation
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In 1964, command arrangements changed. 99 Gurkha Infantry Brigade HQ returned from Singapore and replaced 3 Commando Brigade HQ in Kuching. 3rd Malaysian Infantry Brigade HQ arrived to take over East Brigade in Tawau, and 51 Gurkha Infantry Brigade HQ arrived from UK to command the Central Brigade area with the 4th Division of Sarawak added to it. Its headquarters was in Brunei, and there were no roads to any of its battalions. In DOBOPS, all HQ elements were concentrated in one HQ complex on Labuan.[1] At least one of the British batteries stationed in Malaysia was always deployed in Borneo with its 105 mm guns.
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In summary, in about the middle of the year the situation was:
- East Brigade (HQ 3 Malaysian Brigade), frontage 81 miles, 3 battalions.
Another Malaysian battalion joined East Brigade mid-year, and was later followed by a third Malaysian battalion, a battery and an armoured reconnaissance squadron. This brought the total force to 12 infantry battalions, two 105 mm batteries and two armoured reconnaissance squadrons. The UK component of 8 battalions in Borneo was being sustained by rotating 8 Gurkha and about 7 UK battalions stationed in the Far East. In addition, there were the equivalent of two Police Field Force battalions and some 1500 Border Scouts.[2]
In 1964, UK tactics changed. What had been a platoon commanders' war became a company commanders' one. Most of the dispersed platoon bases were replaced by heavily protected permanent company bases, mostly a short distance from a village, ideally with an airstrip. Each base normally had a section of two 3-inch mortars and a few had a 105 mm gun, although guns had to be moved to deal with incursions. However, they continued to dominate their areas with active patrolling, sometimes deploying by helicopter and roping down if there was no landing site. When an incursion was detected, troops, sometimes relying on the Border Scouts' local knowledge of tracks and terrain, were deployed by helicopter to track, block and ambush it. The Border Scouts tracking skills were highly valued when pursuing the enemy.[3]
Support helicopters, RAF Belvedere and Whirlwind, and RN Wessex and Whirlwind, had increased to 40, but it was not enough. Late in the year, another 12 Whirlwinds arrived.[1] The RN had adopted forward basing, notably at Nanga Gat in the 2nd Division on the Rajang River, which the RAF had previously declared unsafe for helicopters but subsequently used as a forward base for Whirlwinds. At Bario in the 5th Division, RN helicopters received their fuel in air-dropped 44 gallon drums from RAF Beverleys. The expansion of the Army Air Corps (AAC) was creating air platoons or troops of 2 or 3 Sioux in many units, including some infantry battalions, which proved very useful. In addition, the AAC was operating Auster and Beaver fixed wing aircraft and some of the new Scouts, which could carry a similar number of troops as a Whirlwind. However, in the remoter areas of Sarawak, the Twin Pioneers of the RAF and RMAF were vital, and the RAF's Single Pioneers were also useful. East Brigade had the benefit of RMAF Alouette 3s, and RNZAF Bristol Freighters were also used between major airfields.
The Indonesian Air Force also operated air transport, particularly into the more mountainous areas of the border that were beyond rivers navigable by larger boats and landing craft. Although they had far fewer aircraft than the Commonwealth forces, those they had were far more capable. They included the workhorse helicopter Mil Mi-4 NATO reporting name HOUND, the largest helicopter in the world, Mil Mi-6 NATO reporting name HOOK, C-130 Hercules and Antonov An-12 NATO reporting name CUB. The naval presence was composed of minesweepers and other light craft patrolling coastal waters and some large inland waterways, and a "guardship" (frigate or destroyer) at Tawau. Army vessels, typically "ramp powered lighters", supported bases on navigable waterways. Hovercraft were also used.
RPKAD Battalion 2 was withdrawn in February 1964 and deactivated. During 1964, the Indonesian army (TNI) extended its operation into East Kalimantan, and three companies from RPKAD Battalion 1, commanded by Major Benny Moerdani, were sent there. Company A dropped into Lumbis opposite the Interior Residency of Sabah, while B and C were supposed to go into Long Bawan further West opposite the 5th Division of Sarawak. B's C-130 aircraft was unable to identify the Drop Zone, and they never deployed.