By 1941, the Japanese forces in China were striving to isolate the country and sever its links with the outside world, thus preventing supplies from getting in. By 1943, they had succeeded in cutting China’s last remaining line of communication with the West - the Yunnan-Burma Road in the southwest. By this time, a Chinese Expeditionary Force had already been dispatched to Burma. However, the force suffered terrible losses. The ANAKIM campign, launched by the Chinese and their allies, was aimed at avenging these losses, and opening up a supply route to China from India, via Burma.