<P> Nearly every country in the world participated in World War II , with the exception of a few countries that remained neutral . The Second World War pitted two alliances against each other , the Axis powers and the Allied powers . The leading Axis powers were Nazi Germany , the Kingdom of Italy and the Empire of Japan ; while the United Kingdom , the United States , the Soviet Union and China were the `` Big Four '' Allied powers . </P>
who fought on germany 's side in ww2
the Kingdom of Italy the Empire of Japan