Jul 11, 1938 - Aug 11, 1938
Major fighting broke out between Russian and Japanese forces at Changkufeng, near the juncture of Manchuria, Siberia, and Korea. It lasted for a month, with the Soviets administering an embarrassing slap at the victory-conscious Japanese. It started when a division of the Kwantung Army tried to seize high ground clearly within Soviet territory. The Russians reacted with ferocity and forced the Japanese back into their own areas.
Theater: CBI Theater
Source: World War II Almanac (1931-1945)