Shelling of Mainila — military incident staged by the Soviet Union used to justify the Winter War
A fabricated Soviet false flag attack used as a pretext to launch the Winter War against Finland in 1939.
Key Facts
- Date
- 26 November 1939
- Perpetrator
- Soviet NKVD state security agency
- Pretext used for
- Launch of the Winter War
- Days before Winter War
- 4 days
- Operation type
- False flag
Location
Cause → Event → Consequence
The Soviet Union sought a justification to invade Finland and end Finnish resistance to Soviet territorial demands. Soviet leadership, likely through the NKVD, devised a fabricated incident that could be presented internationally as Finnish aggression against Soviet forces near the border village of Mainila.
On 26 November 1939, Soviet Red Army artillery shelled the Soviet border village of Mainila near Beloostrov. The Soviet government falsely attributed the attack to Finnish forces firing across the border and claimed casualties among Soviet personnel, framing the incident as Finnish aggression requiring a military response.
The fabricated incident provided the Soviet Union with a propaganda boost and a formal casus belli. Four days later, on 30 November 1939, the Soviet Union launched the Winter War against Finland. Historians have since conclusively established that the entire episode was a fabrication orchestrated by the NKVD.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Side B
1 belligerent