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August 1 1914
Outbreak of World War I; German declaration of war on Russia. -
Period: to
WW I & WW II
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February 4 1915
Germany announces "war zone" in British waters -
October 15 1916
Germany resumes U-boat attacks under search and destroy rules -
March 3 1918
Soviet Russia and Central Powers make peace with Treaty of Brest-Litovsk -
September 8 1926
Germany admitted to League of Nations -
October 14 1933
Germany quits the League of Nations. -
August 25, 1939
Britain and Poland sign a Mutual Assistance Treaty. -
March 12 1940
Finland signs a peace treaty with Soviets. -
June 22, 1940
France signs an armistice with the Nazis. -
January 13 1942
Germans begin a U-boat offensive along east coast of USA.