Events of World War II By collinsc16 Jan 1, 1939 Wire Mill was drawn Sep 1, 1939 Germany Invaded Poland Jan 1, 1941 Labor in a Diesel Plant was engraved Dec 7, 1942 The Japanese Attacked Pearl Harbor May 29, 1943 Norman Rockwell's Rosie the Riveter was published on the cover of The Saturday Evening Post Aug 6, 1945 US Bombs Hiroshima Aug 9, 1945 US Bombs Nagasaki Aug 14, 1945 Japan formally surrenders to the US, ending WWII