Soviet Forces in early 1920Soviet forces had recently been very successful against the White Russians, defeating Denikin, and had signed peace treaties with Latvia and Estonia.... when Soviet armies marched on Warsaw, Poland
The 1939 Soviet invasion of Poland was a military operation that started without a formal declaration of war on 17 September 1939, during the early stages of World War II, sixteen days after the beginning of the Nazi Germany invasion of Poland .... when Soviet Union
Soviet Union
The Union of Soviet Socialist Republics was a Constitution of the Soviet Union socialist state that existed in Eurasia from 1922 to 1991.The name is a translation of the , romanization of Russian Soyuz Sovetskikh Sotsialisticheskikh Respublik, abbreviated ????, SSSR.... allied with Nazi Germany
Nazi Germany
Nazi Germany and the Third Reich are the colloquial English names for Germany under the regime of Adolf Hitler and the Nazi Party , which established a Totalitarianism dictatorship that existed from 1933 to 1945.... attacked Second Polish Republic
Second Polish Republic
The Second Polish Republic, Second Commonwealth of Poland or interwar Poland is the Republic of Poland between World War I and World War II....