Balkan Alliance
- Balkan Ground Forces
- Balkan Black Sea Fleet
Serbia
- Serbian Armed Forces
Serbian Ministry of the Interior
- Serbian Law Enforcement
Bulgaria
- Bulgarian Armed Forces
- Bulgarian Unity Faction
- Agrarian Union
Macedonia
- Army of the Macedonian Republic
| Bosnia and Herzegovina
- Bosnian Democratic Alliance
Hellenic Republic
- Allied Greek Armed Forces
- Greek Freedom Coalition
Northern Greek Conference
- Northern Greek Reform Party
- Greek Organized Resistance
- Greek Macedonia
- Freedom Army of Macedonia
Serbian Separatist Party
Montenegro
Albania
Kosovo
| Counter Serbian Unionists
Worker's Republic of Serbia
Serbian Alliance Party
- Serbian Faction
- Army of Revolutionary Insurrectionary - Montenegro
East Bulgarian Separatists
Thrace
Balkan Islamic Union
Balkan Insurgency
Macedonian Reactionary Party
Nishani Albania
- Socialist Movement Party
- Royal Army
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