NB: The only other place I am able to locate an edition of this map is in an online search of the Australian War Memorial class=\"MsoNormal\">6532 - Series L607The areas encompassing Trung Phần Việt Nam (the Central Highlands), Quảng Đức Province, Kiến Đức and Khiêm Đức districts, and the adjoining Lam Đồng region including Bảo Lộc and Di Linh formed part of one of the most strategically sensitive inland zones of the Vietnam War.
This region lay along the southern and southwestern margins of the Central Highlands plateau, a landscape of forested mountains, steep ridgelines, narrow valleys, and complex river systems that created ideal conditions for infiltration, concealment, and guerrilla warfare.
Its terrain and position made it a contested space between South Vietnamese control, U.S. and allied operations, and long-established Viet Cong and later PAVN networks.
Quảng Đức Province, created in 1961, bordered Cambodia and sat astride key infiltration corridors linking the Ho Chi Minh Trail system to the populated lowlands and the approaches toward Saigon.
Although not part of the main trunk routes of the Trail, its western border regions functioned as feeder and staging areas, with movement routes, supply caches, and rest areas used by Viet Cong Main Force units and later PAVN formations operating between Cambodia and South Vietnam. Dense jungle cover, sparse population, and limited road access made the province particularly difficult to control.
U.S. Army Special Forces and South Vietnamese CIDG forces were active throughout Quảng Đức and adjoining highland districts. A number of Special Forces camps were established in the province and nearby border areas to monitor infiltration routes, conduct reconnaissance, and interdict enemy movement.
These camps were typically manned by U.S. Special Forces detachments working with indigenous Montagnard and ethnic minority CIDG units, supported by mobile reaction forces such as MIKE Force. Camps in the broader region were frequent targets of Viet Cong and PAVN attacks, particularly during periods of heightened activity such as 1965 through1969, reflecting their role in disrupting enemy logistics and intelligence networks.
Kiến Đức and Khiêm Đức districts were focal points for both pacification efforts and counter-insurgency operations. Viet Cong infrastructure was deeply embedded in rural hamlets and forested zones, and these areas became active theaters for the Phoenix Program, which sought to dismantle the NLF political and administrative apparatus through intelligence-driven operations.
Provincial Reconnaissance Units (PRU), often operating with CIA advisory support, conducted targeted missions against identified Viet Cong cadre, supply nodes, and safe areas. These activities were highly localized, intelligence-focused, and often conducted in terrain that strongly favored defenders familiar with the landscape.
To the east, Lam Đồng Province, including Bảo Lộc and Di Linh, occupied a critical position along Route 20, the main overland connection between the coastal lowlands and the highland city of Đà Lạt. Control of this corridor was essential for both military logistics and economic movement.
As a result, the area saw repeated security operations aimed at protecting road traffic, preventing ambushes, and denying the Viet Cong access to highland plantation zones and transport routes. U.S. Army, ARVN, and Regional Forces conducted search-and-clear operations, patrols, and road security missions, while Viet Cong units used surrounding hills, rubber plantations, and forest margins for staging attacks and maintaining influence over rural populations.
The natural terrain of the region played a decisive role in shaping operations. Major rivers and tributaries carved deep valleys that served both as movement corridors and natural obstacles.
Elevated ridgelines and isolated mountain masses provided observation points and defensible positions, while thick jungle canopy limited visibility and aerial observation. Numerous weapons caches, supply dumps, and medical facilities were discovered over the course of the war, often concealed in remote valleys or near seasonal water sources, underscoring the logistical importance of the area to the Viet Cong and PAVN.
Although large-scale set-piece battles were less common here than in coastal or urban zones, the region experienced sustained low-intensity conflict marked by ambushes, raids, base defense actions, and reconnaissance operations. CIA-linked programs, Special Forces activities, CIDG operations, and Phoenix Program actions overlapped in a complex counter-insurgency environment that blurred the line between military and intelligence operations.
By the early 1970s, increasing PAVN involvement reflected Hanoi’s growing emphasis on consolidating control of inland routes and weakening South Vietnamese authority in remote provinces.
Taken together, Quảng Đức, Kiến Đức, Khiêm Đức, Bảo Lộc, and Di Linh represent a Central Highlands operational landscape defined by terrain dominance, covert movement, and intelligence-driven warfare.
The L607 series was a 1:100,000 scale topographic mapseries produced by the U.S. Army during the Vietnam War for use in SoutheastAsia. Designated for Special Use, these maps were intended for restrictedcirculation and higher-level operational planning rather than routine tacticaldeployment. They were produced under the U.S. Army Map Service Far East(USAMSFE) as part of the Pacific theater mapping program and were clearlymarked “SPECIAL USE S.E. ASIA,” reflecting their controlled status and limiteddistribution.
At a scale of 1:100,000, one centimeter on the maprepresents one kilometer on the ground, allowing for effective analysis oflarge operational areas while retaining essential terrain detail. The seriesemphasized overall terrain structure, movement corridors, and geographicrelationships rather than the fine tactical detail found in 1:50,000 mapseries. Contour intervals were typically 20 meters, providing a clear depictionof elevation, ridgelines, valleys, and drainage systems across broad areas.
The L607 series was compiled primarily through photoreduction of the 1:50,000 L7014 maps, supplemented by aerial photography andupdated intelligence sources. This method enabled faster production whilemaintaining consistency with existing U.S. Army cartographic standards. As aresult, L607 maps retain reliable accuracy while presenting a simplified,command-level view of the terrain.
Hydrographic features such as rivers, streams, and seasonalwaterways are clearly shown, alongside generalized vegetation classificationsincluding forest, jungle, cultivated land, and swamp. Man-made featuresincluding major roads, secondary routes, settlements, airfields, andadministrative boundaries are depicted with reduced density, reflecting theseries’ planning and briefing role rather than close tactical navigation.
Compared to the widely issued L7014 series, L607 maps wereprinted in significantly lower quantities and were often subject to handlingrestrictions. Many examples saw heavy use in planning environments,contributing to their relative scarcity today. Their limited print run andrestricted designation make surviving L607 sheets less common on the collectormarket.
Today, the L607 series is valued for its insight intocommand-level planning and geographic interpretation during the Vietnam War.
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