Polish–Ukrainian War

Polish–Ukrainian War
Part of the Ukrainian War of Independence and the aftermath of World War I
Date1 November 1918 – 18 July 1919
(8 months, 2 weeks and 3 days)
Location
Result

Polish victory

Territorial
changes
Dissolution and annexation of the West Ukrainian People's Republic by Poland
Belligerents

 Second Polish Republic


Regional support: (conflicts with Hutsul Republic)
Strategic support:
 France
Supported by:
 Czechoslovakia
Commanders and leaders
Strength
  • Polish forces:
    190,000
  • Romanian forces:
    4,000
  • Hungarian forces:
    620+
  • West Ukrainian forces:
    70,000–75,000 or over 100,000
  • UPR forces:
    35,000
  • Hutsul forces:
    1,100
  • Komancza forces:
    800
Casualties and losses
10,000 15,000

The Polish–Ukrainian War, from November 1918 to July 1919, was a conflict between the Second Polish Republic and Ukrainian forces (both the West Ukrainian People's Republic and the Ukrainian People's Republic).

The conflict had its roots in ethnic, cultural, and political differences between the Polish and Ukrainian populations living in the region, as Poland and both Ukrainian republics emerged from the collapse of the Russian and Austrian empires.

The war started in Eastern Galicia after the dissolution of the Austro-Hungarian Empire and spilled over into the Chełm and Volhynia regions formerly belonging to the Russian Empire.

Poland won the disputed territory on 18 July 1919.