Key Events of WWII By AnnabelR Nov 11, 1918 World War I ended Jun 28, 1919 Treaty of Versailles was signed Nov 9, 1923 Hitler tries to overthrow the government 1933 Hitler was appointed into government 1933 Holocaust starts Sep 17, 1938 Germany invaded the German part of Czechoslovakia Sep 30, 1938 Munich Agreement signed Mar 15, 1939 Hitler invaded the rest of Czechoslovakia Sep 1, 1939 Germany invaded Poland Sep 1, 1939 World War II starts Sep 17, 1939 Soviet Union invades Poland