It was not simply two countries, but it was the Axis and Allied Powers.
Britain and America
Like anybody cares what countries world war1 was fought am I right?
USA & Borneo,
They fought the Germans, Japanese, and Italy
Some countries have accurace (or as accurate as possible) records of who fought in their forces in World War I; but some countries for various reasons have little or no records of this information.
yes, in some countries such as Russia...............
The United States
Japan and Germany .
germany and russia
Germany
germany, italy, and japan
germany