World War 2 By iakovina Period: Jan 1, 1936 to Aug 17, 1946 World War 2 Oct 15, 1936 Hitler and Mussolini form the Axis powers Mar 15, 1938 Germany invades Austria Sep 1, 1939 Gemany invades Poland Oct 28, 1940 Italy declares war on France and Britain and invades Greece Dec 7, 1941 Japan attacks USA at Pearl Harbor Feb 10, 1943 Russia defeats Germany at Stalingrad Aug 6, 1945 Atomic bombs dropped at Hiroshima and Nagasaki Sep 2, 1945 Germany signs unconditional surrender