The Line

The Line is the prisoners’ name for the railway project that came to govern their days in Siam, and for the conditions of forced labour imposed in its construction. It begins as a route marked by surveyors’ pegs and becomes a boundary between ordinary life and an increasingly brutal struggle to survive. The term holds together the railway’s military purpose, the prisoners’ shared experience, and the gap between a project recorded in engineering plans and the human cost that its public memorials leave unrecorded.

The route and its purpose

When Dorrigo Evans first sees the route in early 1943, it is a straight line of pegs hammered into the ground by Imperial Japanese Army engineers. The proposed railway runs for 415 kilometres from north of Bangkok through to Burma. Its construction is not yet a completed engineering scheme: it exists as limited plans, orders, and exhortations issued by the Japanese High Command. The prisoners are given blunt axes and rotten hemp rope and told to clear a kilometre of giant teak trees along the proposed route.

The project answers a military problem. Japan is overstretched and losing ground, while the Allies supply the Chinese Nationalist Army through Burma and control the seas. Japan seeks a land route to supply its forces in Burma, but lacks the money, machinery, and time to build one by conventional means. The railway’s strategic rationale therefore becomes a demand for labour on a scale that its planners cannot meet with equipment. The Line makes that political emergency material: a route on a map becomes a worksite where prisoners are expected to supply, with their bodies, what the project lacks in tools and time.

The scale of the planned railway also exceeds the prisoners’ initial view of their task. The Australian POWs are among hundreds of thousands of Asian and European people enslaved by the Japanese Empire. Of 22,000 Australian POWs, 9,000 are sent to work on the railway. On 25 October 1943, locomotive C 5631 travels its length for the first time, towing Japanese and Thai dignitaries. The achievement of a completed line is thus presented alongside the deaths of those made to build it: the railway passes over the remains of one in three of the Australians sent there.

From worksite to world

The Line becomes a name for the prisoners’ descent into a radically altered existence. They distinguish between men who have been on the Line and the rest of humanity, though even that distinction seems inadequate to Dorrigo Evans as he considers the men who died there. The term marks a loss of common reference: the work is so extreme that those who have not experienced it cannot fully share the prisoners’ knowledge of it.

The physical route has an exact length, but that fact cannot convey what it means to live within the system built around it. Dorrigo sees the pegs as simple markers that explain where a railway is intended to go, yet cannot communicate the reality gathering around them. The Line comes to signify passage from life into a condition he associates with hell, and from the comprehensible world into one that resists description. Its apparent simplicity—a straight route between points—contrasts with the prisoners’ experience, in which meaning and ordinary measures of time and hardship seem to fall away.

That change is registered in the seasons and in the work regime. At first the dry-season landscape is open, food is scarce but available, and the labour, though hard, has not yet reached its later intensity. Then the trees leaf out, the sky darkens, food diminishes, and the monsoon arrives. The Speedo removes rest days, raises quotas, lengthens shifts, and sends some prisoners to work two shifts, by day and night. The distinction between the fit and the sick gives way to one between the sick and the dying. The Line is no longer simply the route they are clearing; it is the system that increasingly determines who can rest, who must work, and who may survive.

Labour, dispossession, and fellowship

The railway’s changing demands expose the distance between engineering plans and the means available to fulfil them. At one point the Railway Command Group orders a major cutting, already half complete, to be enlarged by a third to address gradients in the next sector. This change requires another 3,000 cubic metres of rock to be removed. The prisoners are cutting rock by hand with hammers and chisels, while even the available chisels cannot be kept sharp for lack of fuel for the forge. The demand for a larger cutting is not matched by improved equipment; instead, it becomes another burden borne by the labourers.

The orders make prisoners function as replaceable construction material. Colonel Kota tells Nakamura to complete the work even if most of the men die, or even if all of them die. In this logic, the railway’s completion takes precedence over the lives of those compelled to build it. The Line therefore names more than difficult labour: it describes a relation in which people’s agency and value are subordinated to an imperial objective. The book distinguishes this experience among prisoners and other enslaved labourers rather than treating their different histories as identical, while showing how the railway’s demands reduce people to a workforce measured against an imposed deadline.

Against this reduction, the prisoners retain a collective identity. Evans’ J Force remains Evans’ J Force even as men die and its numbers diminish. Its members come from different parts of the Australian forces and from varied backgrounds, but their shared captivity makes mutual reliance a condition of survival. The belief they hold in one another becomes stronger as death removes members of the group; their responsibility to the dead is bound to their continued responsibility for the living. The Line separates the prisoners from the world beyond the work, but it also helps form a fellowship that persists through that separation.

Completion, erasure, and return

The railway’s completion does not settle what the Line means. Locomotive C 5631 is later displayed in the museum at Yasukuni Shrine in Tokyo, but the plaque in front of it does not mention the horror of the railway’s construction or name the many who died building it. The number of dead is itself uncertain. Allied POWs were only a fraction of the labour force; alongside them were a quarter of a million or more Tamil, Chinese, Javanese, Malayan, Thai, and Burmese labourers. Estimates of deaths among these enslaved labourers vary widely, and no agreed total exists. Their names, too, are forgotten. The contrast between a preserved locomotive and the absence of a reliable count or memorial record makes the Line a problem of historical memory as well as a physical remnant.

After the war, the railway loses its military purpose and support. Japanese engineers and guards are imprisoned or repatriated, and the labourers who remain to maintain the Line are freed. The Thais abandon it, the English dismantle it, and local tribespeople pull up and sell its rails. Rain and time then undo what construction had imposed: embankments and bridges wash away, cuttings fill in, and vegetation grows among the remnants. Sections are later cleared for visitors and remembrance, but the larger railway is absorbed into the landscape.

The Line’s ending reverses the ambition expressed by its straight course. It was built to connect strategic points and serve an imperial design; eventually it breaks, is dismantled, and disappears into a landscape that does not preserve the project’s intended meaning. Its failure does not restore the lives lost or guarantee that those lives will be remembered. Instead, the surviving image of the railway—an immense undertaking reduced to fragments and long grass—makes its central contradiction visible: a project pursued as if completion could justify any cost ultimately leaves neither a functioning line nor a settled account of its human consequences.