Soviet Union never invaded Finland, Finland started the hostilities with Soviet Union by shelling Soviet border town killing border guards and it was not even the only attack Finland had done.
According to Soviet sources, conflicts involving the use of weapons on the Soviet-Finnish border were not isolated:
On October 7, 1936 on the Karelian Isthmus a Soviet border guard was killed by a shot from the Finnish side.
On October 27, 1936 two shots from the Finnish side were fired at the chairman of the Vaida-Guba collective farm.
On December 12, 1936, a Soviet border guard was shot at from the Finnish side at the Mainila outpost.
On December 17, 1937, a Soviet border guard at the Ternavolok outpost was fired upon by two Finnish soldiers from Finnish territory.
On January 21, 1938, two Finnish border guards violated the Soviet border at the sixth outpost of the Sestroretsk district, and in an attempt to apprehend them by a Soviet outpost, they put up armed resistance, as a result of which one of the Finnish border guards was seriously wounded.
On October 15, 1939, in the section of the Sestroretsk border guard detachment near Beloostrov, Finland opened machine-gun fire on Soviet border guards when a car with a Finnish delegation returning from Moscow after negotiations was crossing the border.
Soviet Union never invaded Finland, Finland started the hostilities with Soviet Union by shelling Soviet border town killing border guards and it was not even the only attack Finland had done.
According to Soviet sources, conflicts involving the use of weapons on the Soviet-Finnish border were not isolated:
On October 7, 1936 on the Karelian Isthmus a Soviet border guard was killed by a shot from the Finnish side.
On October 27, 1936 two shots from the Finnish side were fired at the chairman of the Vaida-Guba collective farm.
On December 12, 1936, a Soviet border guard was shot at from the Finnish side at the Mainila outpost.
On December 17, 1937, a Soviet border guard at the Ternavolok outpost was fired upon by two Finnish soldiers from Finnish territory.
On January 21, 1938, two Finnish border guards violated the Soviet border at the sixth outpost of the Sestroretsk district, and in an attempt to apprehend them by a Soviet outpost, they put up armed resistance, as a result of which one of the Finnish border guards was seriously wounded.
On October 15, 1939, in the section of the Sestroretsk border guard detachment near Beloostrov, Finland opened machine-gun fire on Soviet border guards when a car with a Finnish delegation returning from Moscow after negotiations was crossing the border.
https://ru.wikipedia.org/wiki/%D0%9C%D0%B0%D0%B9%D0%BD%D0%B8%D0%BB%D1%8C%D1%81%D0%BA%D0%B8%D0%B9_%D0%B8%D0%BD%D1%86%D0%B8%D0%B4%D0%B5%D0%BD%D1%82
According to Hilter the poles attacked German in 1939.
Kek
I'm not a fan a Finland by any means, but they were between a rock and a hard spot.
Poles actually attacked Germans in 1939. Have you heard Bloody Sunday? 100s of innocent ethnic Germans were slaughtered by Poles.
I'm aware of the polish mistreatment of Germans.
The Germans still used a false flag attack,to justify the war.
https://en.m.wikipedia.org/wiki/Gleiwitz_incident