Operation Bribie (17–18 February 1967), also known as the Battle of Ap My An, was fought during the
Vietnam War in
Phuoc Tuy province between
Australian forces from the
6th Battalion, Royal Australian Regiment (6 RAR) and two
companies of
Viet Cong from
D445 Battalion, likely reinforced by
North Vietnamese regulars. During the night of 16 February the Viet Cong attacked a
South Vietnamese Regional Force compound at Lang Phuoc Hai, before withdrawing the following morning after heavy fighting with South Vietnamese forces. Two hours later, a Viet Cong company was reported to have formed a tight perimeter in the rainforest 2 kilometres (1.2 mi) north of Lang Phuoc Hai, near the abandoned hamlet of Ap My An. In response, the Australians deployed a quick reaction force. Anticipating that the Viet Cong would attempt to withdraw, as they had during previous encounters, forces from the
1st Australian Task Force (1 ATF) were inserted to block the likely withdrawal route in the hope of intercepting and destroying them.
An Iroquois helicopter from No 9 Squadron, lands in a paddy field, 15 km south east of the 1st Australian Task Force (1ATF) Headquarters, to pick up men of the 6th Battalion, The Royal Australian Regiment (6RAR)
On the afternoon of 17 February, American
UH-1 Iroquois helicopters and
M113 armoured personnel carriers (APCs) deployed 6 RAR into the area north-west of Hoi My. Following an airmobile assault into an unsecured landing zone at 13:45, A Company 6 RAR was surprised by a strong, well-sited and dug-in Viet Cong force — which, rather than withdrawing, had likely remained in location in an attempt to ambush any reaction force sent to the area. The Australians were soon contacted by heavy small arms fire, with a third of the lead platoon falling wounded in the initial volleys. A Company subsequently broke contact and withdrew under heavy fire from what appeared to be a Viet Cong base area. Initially believing they were opposed by only a company, 6 RAR subsequently launched a quick attack by two companies. However, unknown to the Australians, the Viet Cong had been reinforced and they now faced a
battalion-sized force in well prepared positions.
Viet Cong soldiers, believed to be from D445 Battalion.
At 15:35, supported by air strikes, armour, and fire from A Company, B Company assaulted the position. From the outset, lead elements came under constant Viet Cong
sniper fire from the trees, and from previously undetected machine-guns. The assault soon faltered, with steadily increasing casualties as the Viet Cong withstood multiple frontal assaults, including
bayonet charges by two separate
platoons. Surrounded and receiving fire from all sides, the lead Australian elements from B Company could advance no further against the determined dug-in force; all attempts to regain momentum failed to dislodge the defenders. Initially, the Australians used their APCs to secure the landing zone at the jungle's edge, but when the infantry was in trouble they were dispatched as a relief force. Fighting their way forward, the M113s finally arrived by 18:15 and began loading the most seriously wounded as darkness approached. The Viet Cong subsequently launched two successive counter-attacks, both repulsed by the Australians. During the fighting,
one of the APCs was disabled by a recoilless rifle at close range, killing the driver.
By 19:00, after a five-hour battle, B Company broke contact and withdrew into a night harbour near the landing zone with the remainder of the battalion.
Mortars, artillery fire and
airstrikes covered their withdrawal, then pounded the battlefield into the evening. After a tense night, the Australians returned in the morning to find the Viet Cong had left the area, dragging most of their dead and wounded with them while avoiding a large blocking force. A hard-fought affair at close range, the disciplined Viet Cong force matched the Australians as both sides stood their ground, inflicting heavy casualties on each other, before each fell back. Although 6 RAR ultimately prevailed, the vicious fighting at Ap My An was probably the closest the
Australian Army came to a major defeat during the war.
5 Platoon, B Company 6 RAR prior to Operation Bribie. Half the platoon became casualties during the fighting.
In the aftermath of the operation
Hanoi declared that the Viet Cong had won a decisive victory, claiming to have inflicted heavy losses on the Australians. The Australian higher command also claimed a major triumph, a view later reflected by Graham who believed that the Viet Cong had "got a thrashing". While in total just eight Viet Cong bodies had been recovered from the battlefield, many more had obviously been removed and later Australian intelligence reports assessed Viet Cong losses as between 50 and 70 killed, with many fresh graves later found on the withdrawal route. Indeed as a result of the fighting D445 Battalion was unable to mount a full battalion operation for the remainder of 1967, while their losses were increasingly filled by North Vietnamese. Yet the Australians had also suffered heavy casualties, and both sides had matched each other in bravery and determination. The fighting had cost 6 RAR seven killed and 27 wounded, while the cavalry also lost one killed and one wounded, and an APC destroyed. The Viet Cong had proven themselves able to withstand multiple Australian assaults, as well as heavy mortar, artillery, and aerial bombardment, before both sides fell back with their casualties