Fire support was limited for the first half of the campaign. A commando light battery with 105 mm Pack Howitzers had deployed to Brunei at the beginning of 1963 but returned to Singapore after a few months when the mopping-up of the Brunei Revolt ended. Despite the escalation in Indonesian attacks after the formation of Malaysia, little need was seen for fire support: the limited range of the guns (), the limited availability of helicopters and the size of the country meant that having artillery in the right place at the right time was a challenge. However, a battery from one of the two regiments stationed in Malaysia returned to Borneo in early to mid-1964. These batteries rotated until the end of the confrontation. In early 1965, a complete UK-based regiment arrived. The short-range and substantial weight of the 3-inch mortars meant they were of minimal use.