Timeline of Major Events in Hitler's and Stalin's Attempts to Expand Territory in the 1930s.
March 1938: Germany conquers Austria.
September 1938: Germany, under Hitler, annexes the Sudetenland from Czechoslovakia.
March 1939: Germany invades and occupies the rest of Czechoslovakia.
March 1939: Germany invades Poland.
September 1939: Poland falls, and World War II officially begins.
April 1940: Germany employs blitzkrieg (lightning war) tactics against Poland.
May 1940: Germany continues its blitzkrieg, invading Western Europe.
June 1940: Charles de Gaulle becomes the head of the French government in exile in England.
August 1940: The Battle of Britain begins, with Germany attempting to gain air superiority over the United Kingdom.