ww2 By kxylea Jul 7, 1937 Japanese Invade China The second war, was a military conflict fought between the republic of China and the empire of Japan. China fought Japan with some economic help from germany. Pesrl Harbor merged this into an even greater conflict as world war 2. Apr 21, 1939 German Blitzkrieg Sep 1, 1939 Germany Invades Poland Apr 21, 1941 Operation Barbarossa