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When did congress declare war?

Updated: 8/23/2023
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14y ago

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December 7th 1942. After the attack on Pearl Harbor by Japan. The US declared war on Japan. Japan being part of the Axis powers consisting of Germany and Italy. The US declared war on them as well.

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12y ago
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14y ago

The North Koreans pushed across the border into South Korea in June, 1950. The US did not declare war, as Korea became a "police action" of the United Nations. Thanks to the absence of the Soviet delegation at the United Nations, Truman got that body to sponsor a "police action" in Korea to push the North Koreans back across the thirty-eighth parallel. The US made up most of the "police" in Korea.

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13y ago

There have been five formally declared wars in US history:

  1. The War of 1812 with the United Kingdom - Declared 6/18/1812
  2. The Mexican-American War - Declared 5/13/1846
  3. The Spanish-American War - Declared 4/25/1898
  4. WW1 - Declared against Germany 4/6/1917 and Austria-Hungary 12/07/1917
  5. WW2 - Declared against Japan 12/8/1941; against Germany & Italy 12/11/1941; Bulgaria, Hungary, and Romania 6/5/1942

All other military actions were either informal interventions, or policing actions sanctioned in part or whole by Congress. These include:

  1. The Quasi-War (France) - 07/09/1798
  2. First Barbary War (Tripoli) - 02/06/1802
  3. Second Barbary War (Algiers) - 05/10/1815
  4. African Slave Trade Ban - 1819-1823
  5. Engagement of the Paraguayan Navy - 1859
  6. Engagement with Russian forces during the Russian civil War - 1917-1923
  7. Korean War - 07/07/1950
  8. Lebanon Crisis of 1958 - Operation Blue Bat - 07/15/1958
  9. Vietnam War - 08/07/1964
  10. Peace-Keeping operations during the Bosnian War - 03/19/1978
  11. Lebanon Peace-Keeping Coalition - 09/29/1983
  12. Operation Desert Storm - 01/12/1991
  13. Operation Enduring Freedom - 09/14/2001 - Ongoing
  14. Operation Iraqi Freedom - 03/03/2003 - Ongoing
  15. Peace-Keeping Operations during the Second Liberian Civil War - 08/01/2003
  16. The United Nations Stabilization Mission in Haiti - 02/29/2004

Additionally, there are a vast number of military actions and engagements that have taken place as a result of the President exercising his power as the Command-in-Chief.

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14y ago

The U.S. declared war with Germany on April 6, 1917

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