December 1943, three days ahead of schedule. The building of this section allowed much-needed supplies to flow to the troops engaged in attacking the Japanese 18th Division, which was defending the northern area of Burma with their strongest forces around the towns of Kamaing, Mogaung, and Myitkyina. Before the Ledo road reached Shingbwiyang, Allied troops (the majority of whom were American-trained Chinese divisions of the X Force) had been totally dependent on supplies flown in over the Patkai Range. As the Japanese were forced to retreat south, the Ledo Road was extended. This was made considerably easier from Shingbwiyang by the presence of a fair weather road built by the Japanese, and the Ledo Road generally followed the Japanese trace. As the road was built, two fuel pipe lines were laid side-by-side so that fuel for the supply vehicles could be piped instead of trucked along the road. After the initial section to Shingbwiyang, more sections followed: Warazup, Myitkyina, and Bhamo, from Ledo. At that point the road joined a spur of the old Burma road and, although improvements to further sections followed, the road was passable. The spur passed through Namkham from Ledo and finally at the Mong-Yu road junction, from Ledo, the Ledo Road met the Burma Road. To get to the Mong-Yu junction the Ledo Road had to span 10 major rivers and 155 secondary streams, averaging one bridge every . For the first convoys, if they turned right, they were on their way to Lashio to the south through Japanese-occupied Burma. If they turned left, Wanting lay to the north just over the China-Burma border. However, by late 1944, the road still did not reach China; by this time, tonnage airlifted over the Hump to China had significantly expanded with the arrival of more modern transport aircraft. In late 1944, barely two years after Stilwell accepted responsibility for building the Ledo Road, it connected to the Burma Road though some sections of the road beyond Myitkyina at Hukawng Valley were under repair due to heavy monsoon rains. It became a highway stretching from Assam, India to Kunming, China length. On 12 January 1945, the first convoy of 113 vehicles, led by General Pick, departed from Ledo; they reached Kunming, China on 4 February 1945. In the six months following its opening, trucks carried 129,000 tons of supplies from India to China. Twenty-six thousand trucks that carried