Note 2 — Chapter XI · Logistics and Civil Affairs

The troops found their progress greatly hampered by the poor quality of roads leading to the interior of the island. The type of soil made it difficult to provide sufficient approach roads and to maintain all-weather roads. Drivers did not dare come too near the edge of the pavement in passing, even on the major two-lane roads, since their vehicles would probably become mired on the shoulder. The edges of hard-surfaced roads broke down under the constant wear until the roads were no longer wide enough for two-way traffic. Vehicles would often sink to their axles on the shoulders of the highway and on the many access roads, and frequently the roads into camp areas became unsuitable for traffic of any sort.2