January 6
Kuomintang troops attacked the New Fourth Army with seven divisions in south Anhui in order to start a civil war. The event is called the "South Anhui Incident."

January 25
Japanese troops surrounded Panjiayu in Fengrun County, Hebei Province and killed all the 1,230 people in the village. The shocking event is called the "Panjiayu Massacre."

Late October
Japanese troops launched a massive "mopping-up" campaign in the Taihang Mountains.

November 3
The Japanese army launched "mopping-up" operations in the Yimeng Mountains in Shandong Province with more than 50,000 troops.

December 7
The Japanese achieved a sneak attack on Pearl Harbor, inflicting heavy losses on the American navy base. Japan declared war on the United States, the Soviet Union and the Netherlands. The Pacific war broke out.

December 9
The Kuomintang government published a formal war declaration against Japan, at the same time announcing that China was in a status of war against Germany and Italy.

Editor: Yan