Throughout its long and complex history, the United States has fought against quite a few different countries. For example, during the Revolutionary Period, America squared off against 'the home-country' of Great Britain -- and successfully. As yet another example, America engaged in hostilities against Germany, Italy, and Japan during World War II.
The Central Powers vs The Allies
Central Powers: Astria-Hungary, Germany, Turkey ( Ottoman Empire ), Bulgaria
The Allies: Russia ( droped out in 1917 ), France, United Kingdom, Italy ( joined 1915 ) and United States ( joined 1917 )
italy was part of the axis in World War 2, not the allies.
France and Germany
to allow powerful countries to engage in conflicts without directly fighting each other - APEX
Difficult to measure but the largest number of soldiers fighting each other at once was probably the Germans advance against the Russians during the World War 2.
No British counties fought against each other in ww1 England, Wales And Scotland All Fought Against The Germans/Austro-Hungarians In The First World War.
Aggressive nationalism pitted France and Germany against each other, and against the rest of Europe. Because they were too overbearing, they angered other countries, and brought about resentment, which eventually led to war.
France and Germany
World War is a war that involves all/or most of the countries fighting in alliances against each other.
check your answer Another Answer: The French and the Indians were allies, for the most part, fighting the British.
A world war is when there are multiple countries on both sides fighting each other. Just one country against another won't cut it.
They were fighting
the sumerians fought against each other because they were fighting for farmland.
The Battle of Bull Run was fought during the Civil War - North vs. South
The Nationalists & Communists tried to unite against Japan, but they kept fighting each other.
North Korea & South Korea
The two countries fighting in the Agincourt Hundred years war were France and England. And just to let you know... it was 116 years.
a civil war
britain