The Soviet Union invades Poland Soviet - Polish War of 1937
The Soviet invasion and conquest of Poland from September 11th 1937 to December 2nd 1937.
The Warsaw Garrison finally surrenders after running out of ammunition and food supplies.
Unconfirmed reports of Soviet massacres filter out of occupied Poland. Over four million Polish refugees manage to flee into East Prussia, Germany, Czechoslovakia, Hungary, and Romania before the Soviets gain effective control of the Polish western border.The Soviet Union installs a puppet communist regime in Poland and begins a harsh purge of Poland's old government structure and culture. 200,000 soviet soldiers remain in Poland to "insure civil order". A Polish government-in-exile flees to Germany. The Soviet - Polish War of 1937 comes to a close.