Germany invaded Poland, marking the beginning of World War II.
April 9, 1940:
Germany invaded Denmark and Norway.
May 10, 1940:
Germany invaded Luxembourg, Belgium, and the Netherlands.
June 5, 1940:
Germany invaded France.
June 10, 1940:
Germany invaded Monaco.
April 6, 1941:
Germany invaded Yugoslavia and Greece.
June 22, 1941:
Germany invaded the Soviet Union.
June 25, 1941:
Germany invaded Lithuania, Latvia, and Estonia.
