History Timeline By AM3554 Period: Jan 1, 1935 to Dec 31, 1945 WW2 Timeline Project Jul 7, 1937 Japanese Invasion of China A conflict started when China began resisting an expansion to the Japanese. Japanese already occupied large areas in Eastern China. Sep 1, 1939 Germany's Invasion of Poland. Jun 22, 1941 Operation Barbarossa Dec 7, 1941 Pearl Harbor Jan 20, 1942 Wannsee Conference Jul 24, 1943 Operation Gomorrah Jun 6, 1944 D-Day (Normandy Invasion) Feb 13, 1945 Operation Thunderclap Feb 19, 1945 Battle of Iwo Jima Apr 1, 1945 Battle Of Okinawa May 8, 1945 V.E. Day Aug 6, 1945 Dropping of the atomic bombs Dec 16, 1945 Battle of the Bulge