us has formally declared war four times.
us has formally declared war four times.
how many times has the us formally declared war?
four
the table below lists the five wars in which the united states has formally declared war against eleven foreign nations. the only country against which the united states has declared war more than once is germany, against which the united states has declared war twice (though a case could be made for hungary as a successor state to austria-hungary).









































in world war ii, the japanese attacked pearl harbor on december 7, 1941. germany and italy, led respectively by adolf hitler and benito mussolini, declared war on the united states, and the u.s. congress responded in kind.









































section::::undeclared wars.
declaration of war by the united states
bullet::::- one hour after the japanese attack, australian prime minister john curtin announced that "from one hour ago, australia has been at war with the japanese empire." war would be formally declared two days later.









































bullet::::- the japanese conducted the first bombardment of midway, killing four and wounding 10.









































bullet::::- canada declared war on finland, hungary, japan and romania.









































bullet::::- panama declared war on japan.









































bullet::::- hitler issued the "nacht und nebel" ("night and fog") decree, targeting political dissidents for disappearances.
december 1941