In some of my history essays about wars, you may see the word belligerent, which may be unfamiliar. The Definition, though is rather simple. All a belligerent nation or faction is is a nation or faction that participates in the war on one of the sides of it. An example is World War Two, the belligerent nations were on either the Axis or Allies. The Axis belligerents were Nazi Germany (Third Reich), Italy, Japan, Bulgaria, Romania, and Hungary. The main allied belligerents were the United States, The Soviet Union (U.S.S.R.), The United Kingdom, and the Republic of China, which is now Taiwan.