1940's By E-Banks Period: Jan 1, 1940 to Dec 31, 1949 1940's World War 2 Apr 9, 1940 Hitler invades Norway and Denmark Dec 7, 1941 Bombing of Pearl Harbor Jun 4, 1942 Battle of Midway Jun 6, 1944 D-Day Apr 12, 1945 President FD Roosevelt dies FDR has a brain hemorage and Harry S. Truman succeeds him as president. Aug 6, 1945 US drops the atomic bomb on Hiroshima, Japan Aug 9, 1945 US drops 2nd atomic bomb on Nagasaki, Japan Aug 14, 1945 Japan surrenders Mar 5, 1946 Winston Churchill gives his "Iron Curtain" speech Mar 15, 1947 Truman Doctrine US granted $400 million dollars in aid to Greece and Turkey to fight communism.