WW2 Timeline By anthonymasiello Sep 1, 1939 Germany invades Poland \ Period: Sep 1, 1939 to May 8, 1945 WW2 timeline Sep 3, 1939 Britain , France, Austrailia and New Zealand declare war on Germany. Sep 5, 1939 United States proclaims its neutrality; German troops cross the Vistula River in Poland. Sep 17, 1939 Soviets invade Poland. Nov 8, 1939 Assassination attempt on Hitler fails. Mar 12, 1940 Finland signs a peace treaty with Soviets. Jun 3, 1940 Germans bomb Paris Jul 10, 1940 Battle of Britain begins Dec 30, 1940 Massive German air raid on London Sep 3, 1941 First experimental use of gas chambers at Auschwitz Sep 29, 1941 Nazis murder 33,771 Jews at Kiev Dec 7, 1941 Japanese bomb Pearl Harbor Dec 8, 1941 United States and Britain declare war on Japan Dec 11, 1941 Hitler declares war on the United States Jun 1, 1942 Mass murder of Jews by gassing begins at Auschwitz Sep 13, 1942 Battle of Stalingrad begins Jan 10, 1943 Soviets begin an offensive against the Germans in Stalingrad Jul 24, 1943 British bombing raid on Hamburg Jun 6, 1944 D-DAY Oct 30, 1944 Last use of gas chambers at Auschwitz Dec 16, 1944 Battle of the Bulge december 16th-27 Apr 30, 1945 Hitler commits suicide May 8, 1945 V.E Day