On This Day

Germany's planned invasion of England, Operation Sea Lion, is canceled by Adolf Hitler

Operation Sea Lion, also written as Operation Sealion (German: Unternehmen Seelöwe), was Nazi Germany's code name for their planned invasion of the United Kingdom.

Operation Sea Lion, also written as Operation Sealion (German: Unternehmen Seelöwe), was Nazi Germany's code name for their planned invasion of the United Kingdom. It was to have taken place during the Battle of Britain, nine months after the start of the Second World War. Following the armistice with France after the Battle of France, Adolf Hitler, the German Führer and Supreme Commander of the Armed Forces, hoped the British government would accept his offer to end the state of war between the two. He considered invasion to be a last resort, to be used only if all other options had failed.

As a precondition for the invasion of Britain, Hitler demanded both air and naval superiority over the English Channel and the proposed landing sites.

Historical Significance

Operation Sea Lion, also written as Operation Sealion (German: Unternehmen Seelöwe), was Nazi Germany's code name for their planned invasion of the United Kingdom.

Key People

Adolf Hitler

Events Before

  1. US President Franklin D. Roosevelt delivers his Four Freedoms speech during his State of the Union address, outlining fr

    US President Franklin D. Roosevelt delivers his Four Freedoms speech during his State of the Union address, outlining freedom of speech and worship and freedom from want and fear [1] [2]

  2. New Fourth Army Incident: Chinese Kuomintang forces under orders from Chiang Kai-shek fire on the surrounded Communist N

    New Fourth Army Incident: Chinese Kuomintang forces under orders from Chiang Kai-shek fire on the surrounded Communist New Fourth Army at Maolin, Anhui Province, killing or capturing about 7,000 troops

  3. Duke Ellington and his Orchestra first record "Take the 'A' Train" written by Billy Strayhorn, at RCA Studio in Hollywoo

    Duke Ellington and his Orchestra first record "Take the 'A' Train" written by Billy Strayhorn, at RCA Studio in Hollywood, California; it goes on to become his signature tune

  4. Future CIA Director William J. Casey (27) weds Sophia Kurz

    Future CIA Director William J. Casey (27) weds Sophia Kurz

  5. American Actress Hattie McDaniel (45) weds real estate salesman James Lloyd Crawford; divorced 1945

    American Actress Hattie McDaniel (45) weds real estate salesman James Lloyd Crawford; divorced 1945

Events After

  1. German officer Claus von Stauffenberg is promoted to Lieutenant Colonel

    Claus Philipp Maria Justinian Schenk Graf von Stauffenberg was a German army officer who is best known for his failed attempt on 20 July 1944 to assassinate Adolf Hitler at the Wolf's Lair, part of…

  2. Negro Baseball League star Josh Gibson suffers a nervous breakdown and is admitted to the hospital for rest and treatmen

    Negro Baseball League star Josh Gibson suffers a nervous breakdown and is admitted to the hospital for rest and treatment; he is released in time for preseason training

  3. Adolf Hitler declares "Total War" against the Allies

    Adolf Hitler declares "Total War" against the Allies

  4. Soviets announce they have broken the long siege of Leningrad by Nazi Germany by opening a narrow land corridor, though

    Soviets announce they have broken the long siege of Leningrad by Nazi Germany by opening a narrow land corridor, though the siege is not fully lifted until a year later

  5. German Field Marshal Friedrich Paulus surrenders to Soviet troops at Stalingrad

    Friedrich Wilhelm Ernst Paulus (23 September 1890 – 1 February 1957) was a German Generalfeldmarschall (Field Marshal) during World War II who is best known for his surrender of the German 6th Army…

More from the 1940s

Frequently Asked Questions

What happened on February 13, 1942?
Operation Sea Lion, also written as Operation Sealion (German: Unternehmen Seelöwe), was Nazi Germany's code name for their planned invasion of the United Kingdom. It was to have taken place during the Battle of Britain, nine months after the start of the Second World War. Following the armistice with France after the Battle of France, Adolf Hitler, the German Führer and Supreme Commander of the Armed Forces, hoped the British government would accept his offer to end the state of war between the two.
Why is Germany's planned invasion of England, Operation Sea Lion, is canceled by Ado... significant?
Operation Sea Lion, also written as Operation Sealion (German: Unternehmen Seelöwe), was Nazi Germany's code name for their planned invasion of the United Kingdom.
Who was involved in Germany's planned invasion of England, Operation Sea Lion, is canceled by Ado...?
Key figures include Adolf Hitler.

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