Guarding the An Khe Pass: The 720th Military Police Battalion
The 720th Military Police Battalion carved a distinctive chapter in the long history of American military policing during the Vietnam War. Stationed in the rugged terrain of the Central Highlands, the unit bore responsibility for securing the vital An Khe Pass, a corridor that linked the coastal lowlands with the strategic interior of South Vietnam. Their duties blended conventional law enforcement with combat-ready vigilance, often under the same unforgiving sun that had shaped centuries of conflict in that region.
Readers visiting this memorial archive from across the Pacific may find echoes of their own national experience in Vietnam, particularly those familiar with the Australian commitment to the war effort. From Brisbane recruitment offices to RSL gatherings in suburban Melbourne, the stories of allied service personnel often intertwined, even when units operated thousands of miles apart. Understanding how the 720th operated at An Khe offers a window into the kind of sustained, unglamorous work that kept Allied forces supplied, protected, and functional during one of the most turbulent decades of the twentieth century.
| Operational Focus | An Khe Pass Duties | Broader Vietnam Theater Role |
|---|---|---|
| Traffic Control | Regulating military convoys on Highway 19 through the pass | Managing vehicle flow at major ports and depots |
| POW Handling | Processing detainees at the battalion stockade | Escorting prisoners between holding facilities |
| Area Security | Patrolling perimeter approaches to Camp Radcliff | Defending rear-area installations from infiltration |
| Law Enforcement | Investigating incidents among service personnel | Enforcing military code across base camps |
| Combat Support | Repelling sapper attacks on convoys | Responding to Tet Offensive disruptions in 1968 |
Origins and Deployment of the 720th MP Battalion
The 720th Military Police Battalion was activated as part of the broader expansion of U.S. Army military police strength during the early 1960s. By the time the unit deployed to Vietnam, it had absorbed personnel from across the United States, with many soldiers bringing civilian police experience, prior service in National Guard units, or recent basic training at Fort Gordon. The battalion's organisational structure typically included multiple MP companies, a headquarters detachment, and specialised teams trained in handling detainees and conducting criminal investigations.
Arrival at An Khe placed the battalion within a landscape defined by red soil, monsoon rains, and the constant rumble of tactical aircraft. Camp Radcliff, the sprawling base that anchored the 1st Cavalry Division's operations, sat at the mouth of the An Khe Pass. The 720th was tasked with safeguarding the arteries of movement that flowed through this base, ensuring that supplies, ammunition, and personnel could move between the coastal port at Qui Nhon and the frontline units further west. Without such security, the entire logistical framework of the Central Highlands campaign would have been compromised.
Strategic Significance of the An Khe Pass
The An Khe Pass functioned as one of the most consequential chokepoints in the South Vietnamese theatre of operations. Highway 19, the principal paved route connecting the coastal city of Qui Nhon to the interior city of Pleiku, threaded directly through this narrow valley. Enemy forces understood the pass's value and repeatedly targeted it with ambushes, mining operations, and sapper assaults designed to sever Allied supply lines. For the military police, this meant that routine convoy duty could transform into a firefight within seconds.
Control of the pass required more than occasional patrols. The 720th worked in close coordination with engineers who repaired bomb damage, with infantry units that established blocking positions on the surrounding ridgelines, and with air assets that could be called upon when convoys came under sustained attack. The battalion's role was less about holding terrain than about ensuring the terrain remained usable for the forces that depended upon it. This indirect but essential form of combat support distinguished military police operations from the more recognisable infantry engagements that dominated news coverage in cities as far away as Sydney and Perth.
Daily Operations and Stockade Duties
Life for the 720th at An Khe rarely followed a predictable schedule. Morning formations might give way to a sudden alert, sending military police scrambling to reinforce a convoy that had radioed contact with enemy forces. Other days brought the steady rhythm of stockade operations, where soldiers processed newly captured prisoners of war, documented confiscated weapons, and ensured that detainees were treated in accordance with the Geneva Conventions. The stockade at An Khe became one of the busiest in the II Corps Tactical Zone, reflecting both the intensity of combat nearby and the importance of intelligence gleaned from captured fighters.
Beyond combat-related tasks, the battalion maintained a robust presence on base. Military police walked posts at ammunition supply points, controlled access to helicopter pads, and directed traffic at intersections clogged with deuce-and-a-half trucks and armoured personnel carriers. Disciplinary matters, from minor infractions to serious criminal investigations, fell under the battalion's jurisdiction. Investigators worked alongside CID detachments, gathering statements, securing evidence, and preparing cases that might eventually be referred to general courts-martial. The variety of duties demanded a versatile soldier, and the 720th developed a reputation for producing exactly that.
The Tet Offensive and Its Aftermath
The 1968 Tet Offensive reshaped nearly every aspect of the Vietnam War, and the 720th MP Battalion felt its reverberations directly. While the fiercest fighting erupted in urban centres such as Saigon and Hue, the offensive also included coordinated attacks on base areas throughout the country. At An Khe, enemy forces probed the perimeter in multiple directions, and military police found themselves defending the very infrastructure they normally secured. The experience blurred the line between rear-area duty and frontline combat in ways that few previous operations had demanded.
In the weeks and months that followed, the battalion adjusted its posture to reflect the new reality. Convoys travelled with heavier security elements, patrols were conducted at greater frequency, and intelligence reports were scrutinised for any sign of renewed infiltration. For military police veterans who later shared their recollections at gatherings organised by the Vietnam Veterans Association of Australia or who corresponded with Australian allies stationed at nearby bases, the Tet period stood out as a defining moment. The lessons absorbed during those weeks influenced convoy procedures, perimeter defence doctrine, and the standing operating procedures of military police units for the remainder of the war.
Convoy Escort and Highway 19 Operations
Few assignments tested the 720th as consistently as the daily escort of convoys along Highway 19. The road wound through terrain that offered countless ambush sites, from dense jungle sections to stretches bordered by rice paddies and small villages. Each convoy required careful coordination between the military police at the front and rear of the column, the truck drivers who kept disciplined intervals, and the helicopter gunships that often circled overhead. When an ambush erupted, the lead and trail MP vehicles bore the immediate brunt of the contact, returning fire while signalling for support and protecting the drivers who lacked personal weapons.
The pace of these operations rarely slowed. Multiple convoys traversed the pass each day, carrying fuel, ammunition, rations, mail, and replacement personnel. A single breakdown or a single well-placed mine could halt movement for hours, cascading into logistical delays felt throughout the Central Highlands. Military police learned to read the landscape, recognising the subtle signs of a freshly prepared ambush or a recently emplaced explosive. Their vigilance, often invisible to the drivers they protected, kept the highway functioning and ultimately kept the broader Allied effort in the region supplied.
Personnel Rotation and Connections Across the Pacific
Although the 720th MP Battalion was an American unit, its operational environment intersected with the experiences of allied service personnel deployed from countries such as Australia. Australian forces operated in neighbouring provinces and shared intelligence, logistical channels, and occasional joint operations with their American counterparts. Soldiers who had grown up in suburbs outside Adelaide or who had completed national service before volunteering for overseas duty sometimes found themselves trading stories with American military police at base camps, mess halls, and shared recreational facilities. These encounters, recorded in letters home and later preserved in archival collections, formed part of the broader fabric of allied cooperation.
Rotation policies ensured that individual soldiers served twelve-month tours, but the battalion maintained continuous presence at An Khe throughout much of the war. Replacements arrived in waves, bringing fresh skills and perspectives while inheriting the lessons of those they relieved. The constant turnover made institutional memory a precious commodity, and experienced non-commissioned officers became the backbone of unit continuity. For Australian researchers and historians visiting archives in Canberra or studying at institutions affiliated with the Australian War Memorial, the records of the 720th offer a valuable complement to the official history of Australian involvement in the conflict.
Legacy and Memorial Recognition
The work of the 720th MP Battalion at An Khe Pass rarely captured headlines, yet it sustained the operational tempo of one of the most demanding theatres of the Cold War era. Military police who served there returned home with skills sharpened by constant vigilance, memories of firefights fought from cabs of unarmoured trucks, and a quiet pride in duties that few civilians would ever fully understand. Their contribution forms a thread in the larger tapestry of the Vietnam War, one that this memorial archive seeks to preserve alongside the recollections of infantrymen, aviators, medics, and engineers.
In remembering the 720th, the site honours the unglamorous labour that kept convoys rolling, prisoners processed, and bases secure. The An Khe Pass itself, once a battleground of mine and ambush, has long since returned to quieter purposes, but the stories of those who watched over it remain worth telling. Visitors from Australia and beyond who explore these pages will find not only a record of military service but a testament to the resilience and professionalism of the men and women who wore the military police badge in a distant and difficult land.
