Key Facts
- Duration
- 1918–1919 (approx. 1 year)
- Trigger
- German Ober Ost garrison withdrawal after WWI armistice
- States targeted
- Estonia, Latvia, Lithuania, Belarus, Ukraine
- Resulting peace treaties
- Estonian, Latvian, and Lithuanian–Soviet peace treaties
- Territorial gain (Belarus)
- Belarusian People's Republic conquered; Byelorussian SSR proclaimed
Strategic Narrative Overview
Soviet forces advanced rapidly westward, initially achieving success against Estonia and overrunning much of Belarus, where they dissolved the Belarusian People's Republic and proclaimed a Soviet socialist republic. However, resistance stiffened: Estonia launched a determined war of independence, Latvia and Lithuania organised effective defence forces, and the offensive gradually lost momentum. The campaign fragmented into several distinct conflicts, including the Estonian Pskov Offensive, the Latvian War of Independence, the Lithuanian–Soviet War, and the ongoing Ukrainian–Soviet War.
01 / The Origins
Following Germany's defeat in World War I in November 1918, German Ober Ost forces began withdrawing from vast territories in Eastern Europe they had occupied. Soviet Russia saw this as an opportunity to extend Bolshevik rule westward into the resulting power vacuum, seeking to link up with revolutionary movements and bring Estonia, Latvia, Lithuania, Belarus, and Ukraine under Soviet control before independent national governments could consolidate power.
03 / The Outcome
The Soviet westward offensive ultimately failed to achieve its objectives in the Baltic states and Lithuania. Estonia, Latvia, and Lithuania successfully defended their independence, leading to the Soviet recognition of Estonia and the conclusion of the Latvian–Soviet and Soviet–Lithuanian peace treaties. Belarus remained under Soviet control and became a Soviet republic. The broader campaign dissolved into separate regional conflicts, and Soviet Russia was forced to accept the existence of independent Baltic states.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Side B
4 belligerents
Kinetic Engagement Axis
Scroll horizontally to view full axis. Events plotted relatively.