Ledo Road (from Ledo, Assam, India to Kunming, Yunnan, China) was an overland connection between India and China, built during World War II to enable the Western Allies to deliver supplies to China, to aid the war effort against Japan – As an alternative to the Burma Road became required, once that had been cut-off by the Japanese in 1942.
It was renamed the Stilwell Road, after General Joseph Stilwell of the U.S. Army, in early 1945 at the suggestion of Chiang Kai-shek. It passes through the Burmese towns of Shingbwiyang, Myitkyina and Bhamo in Kachin state – In the 19th century, British railway builders had surveyed the Pangsau Pass, which is 1,136 metres i.e. 3,727 feet high on the India-Burma border, on the Patkai crest, above Nampong, Arunachal Pradesh and Ledo, Tinsukia (part of Assam). They concluded that a track could be pushed through to Burma and down the Hukawng Valley. Although the proposal was dropped, the British prospected the Patkai Range for a road from Assam into northern Burma. British engineers had surveyed the route for a road for the first 130 kilometres i.e. 80 miles.
After the British had been pushed back out of most of Burma by the Japanese, building this road became a priority for the United States. After Rangoon was captured by the Japanese and before the Ledo Road was finished, the majority of supplies to the Chinese had to be delivered via airlift over the eastern end of the Himalayan Mountains known as the Hump. Of the 1,726 kilometres i.e. 1,072 miles long road, 1,033 kilometres i.e.642 miles is in Burma and 632 kilometres i.e. 393 miles is in China with the remainder in India.