WWII and WWI
Which war? US fought many many wars.
The US has fought no major wars since Vietnam.
The US has fought several wars.
55,000,000
There isn't a specific answer to that
balls
If you mean the northern states, they fought in the Civil War. Other than that one time, the US has always been united. Any wars which involved the north, involved the entire US. The US has, of course, fought in two world wars and many other wars.
all i know is that the U.S has fought in about 8 wars, but i bet there's a lot more! :)
The U.S. has fought in a total of thirteen wars starting with the American Revolution and going through the Afghanistan War.
The United States fought in six major wars: the War of 1812, the Mexican-American War, the American Civil War, the Spanish-American War, and the Philippine-American War.
US personnel fought in all three Gulf Wars. Which one concerns the question?
Because of how the question is worded, the War of 1812 is the only war that would qualify. The Mexican War was fought almost entirely on Mexican soil, much of which became US territory after the war. The Texan Revolution was fought ten years before Texas became a US state. Both the American Revolution and the French and Indian War were fought before the US became a country. Other wars were fought on land claimed by the US, mostly against Native American forces, but these were not major.