Military police and the enemy mortar attack on Cu Chi
Cu Chi in the late 1960s was more than a sprawling base camp north of Saigon; it was a sprawling complex of corrugated-steel bunkers, helicopter pads, ammunition storage points and tented billets pressed into the red earth of what had once been rubber plantations. Military Police detachments worked out of this network every day, running convoys along Route 1, escorting engineers, and screening Vietnamese nationals who entered the wire. The enemy knew the camp's rhythm as well as anyone, and they spent months plotting how to disrupt it with a sudden rain of mortar rounds. When the attack came, the Military Police found themselves doing jobs that never appeared in their field manuals, from recovering the wounded in the dark to holding a perimeter around the still-burning motor pool.
What follows draws on archival records, contemporary after-action reports and the recollections of veterans held by institutions such as the Australian War Memorial in Canberra. The site is not endorsed by the U.S. Army or Department of Defense and exists as an independent memorial project, but the story it tells sits at the intersection of American and Australian service, because Cu Chi was the home of the 1st Australian Task Force. Australian Military Police, American Military Police and their ARVN counterparts shared the same blast walls during the worst nights of the war.
Cu Chi base camp and why it drew enemy fire
Cu Chi sat about twenty-five miles northwest of Saigon in the rubber country of Tay Ninh province. The district had been a Viet Cong stronghold since the late 1950s, and the maze of hand-dug tunnels beneath the surrounding villages became a byword for the insurgency. Above ground, the Australian and American engineers who built the camp simply paved over the same soil, knowing that sapper teams could emerge almost anywhere along the perimeter. The base sprawled across several square kilometres, taking in landing strips, a logistics hub, a hospital complex and the headquarters of multiple battalions, including the 5th and 6th Battalions of the Royal Australian Regiment.
The camp's footprint made it both a logistical prize and a logistical nightmare. Artillery could be aimed at it from half a dozen concealed positions within rocket range, and the underground kitchens, fuel farms and ammunition depots offered spectacular secondary explosions if hit. Military Police detachments were assigned to guard the most sensitive of these sites, especially the ammunition supply point and the brigade tactical operations centre, where losses would have crippled the response to any subsequent attack. The base was therefore a constant target, hit dozens of times between 1966 and 1972 by mortars, rockets and sapper assault teams.
Intelligence officers understood that the enemy would return again and again to test the camp's perimeter, and so they built a layered defence in which Military Police formed an essential ring. MPs kept the gates flowing during quiet weeks, but they were also trained to seal them within seconds of an alarm, redirect traffic away from the most exposed sectors, and coordinate with the Australian-led quick reaction force if a probe looked like it might become an assault. The artillery and infantry could blunt a ground attack; only the MPs could keep a 6,000-person camp moving when the shells started to fall.
Routine duties of the military police at Cu Chi
Day-to-day life for the Military Police at Cu Chi revolved around the camp's two main gates, the long central artery known simply as the main street, and the helicopter apron at the southern end. MPs wrote tickets, directed traffic after rain turned the roads to mud, and checked identity cards of the Vietnamese workers who entered each morning to clean latrines and load pallets. Outside the wire, they provided convoy security along the road to Tay Ninh, with gunners riding the lead and trail vehicles and the MP jeeps threading through the columns to handle breakdowns and detours.
Inside the wire, their job shifted almost by the hour. Some were posted at the holding area where captured enemy prisoners were processed before being handed to intelligence units; others stood watches at the airstrip, keeping F-100s and helicopter crews clear of wandering jeeps. A small detachment worked closely with the Australian Provost Company, coordinating the movement of Australian troops and supervising the segregation of allied and local personnel at gates. The Provost Company was the Royal Australian Corps of Military Police in all but name, and its members wore the same brassard their American counterparts did, sharing mess halls and motor pools across the base.
Coordination between US and Australian MPs was pragmatic rather than ceremonial. Joint briefings at the Camp Provost Marshal's office began each evening with a map of the day's outgoing convoys, a list of expected VIP arrivals, and the latest intelligence on mortar positions. By the time the enemy mortar attack on Cu Chi began, these briefings had become almost a ritual, dull in their detail, vital in their intent, and central to the discipline that kept the camp functional under fire.
The night the enemy mortar attack hit the base
The attack came in the pre-dawn hours, when visibility was worst and most of the camp was still asleep. Enemy observers, working from a vantage point in the rubber, called corrections as the first tubes fired. Within seconds, a dozen 82-millimetre rounds and several larger 120-millimetre shells began walking across the camp, tearing into the communications centre, the helipad and the battalion aid station. Several rounds fell short of their targets and burst among the motor transport yard, shredding canvas and throwing burning fuel across the access road.
Military Police on night shift responded before the last round had landed. Two MP jeeps that had been patrolling the southern perimeter raced toward the motor pool, their drivers unable to see much but knowing that anyone caught there would be cut off from the bunkers. Other MPs ran for the ammunition supply point, where a single hit could have set off a chain detonation that would have levelled half the base. The quick reaction force attached to the MP detachment moved to secure the main gate, closing it against traffic until sappers could be sure the perimeter was intact.
The human cost arrived at the casualty clearing station within minutes. MPs helped stretcher-bearers lift wounded Australians and Americans from the debris, directed ambulances along routes that avoided craters and burning vehicles, and kept order as medics triaged the injured. One MP sergeant remembered decades later, in an interview held by the Australian War Memorial in Canberra, having to pull a comrade from a wrecked truck while incoming rounds were still cracking overhead. The disciplined chaos of those minutes set the tone for the rest of the day, and for the long weeks of recovery that followed.
| Phase | Primary MP tasks | Key locations | Allied cooperation |
|---|---|---|---|
| Pre-attack routine | Convoy escort, gate checks, prisoner handling | Main gate, airstrip, holding area | Joint US-Australian briefings |
| During incoming fire | Quick reaction, ammo point security, casualty evacuation | Motor pool, ammo supply point, aid station | ARVN liaison teams |
| Immediate aftermath | Cordon, route clearance, traffic rerouting | Main street, communications centre, gate | Engineer and CI teams |
| Following days | Refugee screening, perimeter patrol, escort of repair convoys | Tunnel sites outside wire, refugee camps | Local district forces |
Recovery, damage control and the hours after
Once the firing stopped, the work of the Military Police shifted from reacting to rebuilding. They formed a cordon around the damaged communications centre, where classified material lay exposed, allowing engineers and counterintelligence teams to enter one section at a time. Convoys that had been held outside the wire during the attack now had to be guided in, and the MPs took over traffic control on the main supply route, which was cratered in three places. Bulldozers were escorted to the worst hits, while MPs kept the curious and the shell-shocked out of their way.
Damage assessment patrols fanned out across the camp by mid-morning, accompanied by MP escorts who knew the layout and could read the situation faster than headquarters staff. They counted the craters, marked the unexploded ordnance for bomb disposal teams, and reported which buildings were still tenable. Outside the wire, Australian infantry and engineer teams were sent to investigate suspected firing points in the rubber, and the Provost detachments tagged along to handle any prisoners or refugees found along the way. This pattern, repeated after most barrages at Cu Chi, became a kind of institutional memory passed from one MP company to the next.
Beyond the perimeter, MPs also screened Vietnamese villagers who had fled the area during the attack, many of whom arrived at the camp gates carrying whatever they could salvage. This work, familiar from the 1968 Tet Offensive aftermath at the American Embassy in Saigon, was repeated in miniature at Cu Chi as Military Police checked papers and separated civilians from potential infiltrators. Provost teams attached to Australian units coordinated with their American counterparts to keep records consistent, an unglamorous task that nonetheless shaped the intelligence picture for the next operation and helped commanders decide where to push patrols in the days ahead.
Legacy, memory and the Australian connection
The events of that morning are remembered differently on each side of the Pacific. In the United States, the attack became part of the wider record of base-camp harassment that defined the enemy's effort to bleed the allies through attrition. In Australia, the story is folded into the broader remembrance of the 1st Australian Task Force, whose base at Cu Chi bore the brunt of more than fifty mortar and rocket attacks during the war. The names of Australians killed in these barrages are inscribed on the Australian Vietnam Forces National Memorial on Anzac Parade in Canberra, and a number of the after-action reports and recovered artefacts are kept at the Australian War Memorial, where a permanent gallery is dedicated to Australian service in South-East Asia.
For veterans, particularly those who served as Military Police and Provost soldiers, the attack left a particular imprint. Reunions held each August around Vietnam Veterans' Day are marked in branches of the Vietnam Veterans Association of Australia from Brisbane to Perth, and the Royal Australian Corps of Military Police holds its own commemorations at the corps' training depot and at the Australian War Memorial. In Melbourne, the Shrine of Remembrance has hosted displays of equipment and personal items recovered from Cu Chi, often donated by the families of those who fell in attacks that received little attention at the time but have grown in significance as the war fades from living memory.
The wider story of the enemy mortar attack on Cu Chi is therefore not just an American tale. Australian soldiers served in every part of the camp that day, and Australian Military Police shared the radios, the foxholes and the long hours of after-action duty with their American comrades. Their work during the barrage, in the immediate hours that followed and in the weeks of recovery that came after, is part of the same history now told by archives in Canberra and Washington, by veterans' groups from Hobart to Darwin, and by memorials such as the one on Anzac Parade where the names of the fallen are read aloud each year. The mortar attack was a single night of violence, but the discipline and the care shown by Military Police in its wake helped to keep the camp alive, and kept the memory of those who fell inside the wire.
