First World War > First World War: Allied Forces First World War: Allied Forces Allied CountriesGreat BritainRussiaItalyAustraliaNew ZealandSouth AfricanRhodesiaRomaniaGreeceFranceBelgiumUnited StatesCanadaSerbiaIndiaPortugalMontenegroPoland Gibraltar Japan Newfoundland Persia Allied Armed ForcesBritish ArmyRoyal Flying CorpsAustralian Imperial ForceFrench ArmyFrench Air Service French Navy Russian ArmyMontenegrin ArmyNew Zealand ArmyPortuguese ArmyNewfoundland ArmyUnited States ArmyUnited States Air ServiceBritish Expeditionary ArmyRoyal NavyCanadian CorpsFrench NavyBelgian ArmySerbian ArmyGreek ArmyIndian ArmySouth African ArmyRhodesian Army Romanian Army United States NavyItalian Army