How many sides were there in World War 2?

Answer 1

There were basically two "sides" in WW2. For most of the period covered by the period of the war these consisted of

On the one side, the Allied nations: principally

• the United Kingdom (1939-45)
• the Soviet Union (1940-45)
• the United States (1941-45)

On the other, the Axis powers: principally

• Germany (1939-45)
• Italy (1940-43/45)
• Japan (1941-45)

However, as far as other countries are concerned this is a simplified picture. In September 1944, for example, Bulgaria was simultaneously at war with Germany, the United Kingdom, the Soviet Union, and the United States!