I'm assuming that this is a question about the Great War 1914-9 United Kingdom and her Empire France Russian Empire These were the Allies of the Triple Entente they were joined in 1917 by the USA
Hitler, Mussolini, and the Japanese (Germany, Italy, Japan), made up the axis powers. These were the attacking powers.
The countries that fought against Hitler included The French (until the fall of France in 1940), the British, the Soviets, the Americans (Who also almost single handedly defeated the Japanese). Also, the Allies included Australia, New Zealand, Canada, China, and several other small countries.
The Swiss were technically neutral, and helped Hitler, but this was only to remain non-conquered. Really, they supported the allies but were not able to show it very much.
England, United States of America, France, USSR
There are more countries who fought against Germany, but these are the most known ones.
The Allied Powers
The 'Allies'
The US, England, and Russia were known as the allied countries and fought against Germany and Italy who were known as axis countries in World War II
America fought against the three Axis powers: Germany, Italy and Japan.
No, they were allies. Germany helped Japan. They fought against the same enemies in many countries.
The Triple Entente
The three countries siding against Hitler's Germany were: Great Britain, France and the Soviet Union.
The name given to the countries fighting against Germany was Allies. This name was given to this group in both World Wars.
The Allied Powers
allies
Entente Powers
In the First World War, Great Britain, France, and Russia fought against Germany. Germany was part of an alliance called the Central Powers.
BritainFranceRussiaItalyU.S
The USSR and Britain were fighting against Germany in 1942
The US, England, and Russia were known as the allied countries and fought against Germany and Italy who were known as axis countries in World War II
Both Germany and Japan fought against the US in WW2.Both Germany and Japan fought against the US in WW2.
great britain, france, and russia.
Germany
it's not as if the war was voted for, to be honest. however, if what you mean by 'against' is 'didn't start it', I'll say everyone but Germany, Italy and japan at a guess.