when did germany and the soviet union split poland
Soviet invasion of Poland The Soviet invasion of Poland was a Soviet military operation that started without a formal declaration of war on 17 September 1939. On that morning, 16 days after Germany invaded Poland from the west, the Soviet Union invaded Poland from the east. Subsequent military operations lasted for the following 20 days and ended on 6 October 1939 with the two-way division and annexation of the entire territory of the Second Polish Republic by both Germany and the Soviet Union.[7] The joint German-Soviet invasion of Poland was secretly agreed to following the signing of the Molotov-Ribbentrop Pact on 23 August 1939.[8]