History / China / Japan:Second Sino-Japanese War (7.7.1937 - 2.9.1945);Chinese guerilla warfare against the Japanese occupation under the leadership of Chiang Kai-shek.US military aid for Chinese nationalist troops: the lead vehicle of a supply convoy is freed from the mud by a caterpillar vehicle on the Ledo road (from Assam; India; to Kunming; Yunnan; China).Photo; January 1944.