September 1, 1939.
WWII was America's last declared war. Prior to WWII, the American Civil War (aka US Civil War) was NOT a declared war. Actually, prior to WWII, the war was called the "Cold War", but was not a declared war.
The only nation on which Germany declared war in WWII was the United States of America.
Which war? For the USA WWI was declared in 1917 as allies and WWII declaration was made 12-8-1941 the day after Pearl Harbor was bombed. In England they declared war on Germany in 1917 for WWI and in 1939 for WWII.
Japan and Germany declared war on the US.
The US Civil War (1861-1865) was not a declared war. Every war/conflict/operation since WWII has NOT been a declared war. Atomic bombs have made the declaration of war nearly impossible. Declaring war implies using nukes (fight to win).
WWII was America's last declared war.
WWII was America's last declared war. Prior to WWII, the American Civil War (aka US Civil War) was NOT a declared war. Actually, prior to WWII, the war was called the "Cold War", but was not a declared war.
WWII.
No. Not since WWII.
The last US declared war was WWII.
WWII was America's LAST declared war.
During WWII, San Marino initially declared was on Britain, then when Italy declared surrender SanMarinodeclaredneutrality. In September 1944 San Marino declared war on Germany. During WWII, San Marino initially declared was on Britain, then when Italy declared surrender SanMarinodeclaredneutrality. In September 1944 San Marino declared war on Germany.
The only nation on which Germany declared war in WWII was the United States of America.
People interchange the word "conflict' with WWII or WWI or other wars these days; so it's acceptable to call it either. The last declared US war was WWII so any war or conflict occurring after WWII wasn't declared...if that happens to be the issue here. And besides, the American Civil War was not a declared war either.
Last declared US war was WWII.
Turkey
The US Congress has Declared war 5 times. The War of 1812 being the 1st and WWII being the last