Leaders of the Major Allied Powersofas ofGeorge V, King the UnitedKingdom 1917Raymond Poincaré,President of FranceWoodrow Wilson, Presidentof the United StatesVittorio Emanuele III, King ofItalyAlbert I, King of the Belgium
All the Allied Powers Flags as of 1917
Leaders of the Major Central Powers Kaiser Wilhelm II: German Emperor Franz Joseph: Emperor of Austria-Hungary
At this point there were two major alliances, the Allied powers, the Central powers, and their supporters. The rest were neutral.