World War I
British Empire ▪ United Kingdom ▪ Australia ▪ Canada ▪ British India ▪ Newfoundland ▪ New Zealand ▪ South Africa France Russian Empire Italy United States Japan Serbia Montenegro Romania Belgium Greece Portugal ...
and others Central Powers Germany ▪ Baden ▪ Bavaria ▪ Prussia ▪ Saxony ▪ Württemberg Austria-Hungary Ottoman Empire Bulgaria
Co-belligerents Darfur Dervish State Jabal Shammar...
and others Commanders and leaders
Allied leaders H. H. Asquith David Lloyd George Douglas Haig Georges Clemenceau Raymond Poincaré Ferdinand Foch Nicholas II Nicholas Nikolaevich Aleksei Brusilov Victor Emmanuel III Vittorio Orlando Luigi Cadorna Woodrow Wilson John J. Pershing Ferdinand I Constantin Prezan Taishō Peter I Radomir Putnik...