In a WWI where the OTL belligerents are fought in different sides, thus resulted into alternate theatres and fronts, which side that you think is more likely to win...?
Some thoughts:
1. European Theatre
Britain vs. France: Could Britain invade French northern coast? Would it invade directly or maybe through Belgium?
Germany vs. Austria-Hungary: Where would be the most likely region their armies meet each other? Who would win?
Austria-Hungary vs. Ottoman Empire: Same with above, where would be the most likely region their armies meet each other? And again, who would win?
France vs. Italy: Would Italy be able to take Nice and Savoy? Would France be able to cross the Alps?
2. Middle-Eastern Theatre
Britain vs. Russia: Who would be able to take all of Persia?
3. African Theatre
Britain vs. France: Would France be able to take British colonies? Or vice versa?
Britain/France vs. Italy: Would Italy be able to defend Libya and Somalia from Britain/France?
4. Asian Theatre
Britain vs. Russia: Would Russia be able to invade India? Would Britain successfully defend it?
Britain vs. France: Who would be able to take the colonies of the other in this theatre?
Britain vs. Japan: Whose navy is more superior here? Would Britain be able to take Japan's possessions in China, or vice versa?
Russia vs. Japan: Who would be able to win this time?
5. Pacific Theatre
United States vs. Japan: Who would get the upper hand here?
6. American Theatre
United States vs. Britain: So...who would invade who? And where? Canada or Caribbeans?
United States vs. Mexico: Could United States take all of Mexico this time? Could Mexico defend themselves?
United States vs. Brazil: Could United States invade Brazil, at all?
United States vs. Russia: Could Russia invade Alaska? Could United States invade Russian Far East?
7. Atlantic Theatre
United States vs. Britain: Who would get naval superiority here?
8. Mediterranean Theatre
Britain vs. Italy: Would Italy be able to take Malta? Would Britain be able to invade Italy amphibiously via Mediterranean?