Previous -1939-Soviet Invasion of the Baltics (CYOAH Poland decides that the Communists must be stopped, or else they will be the next to fall. They declare war on the Soviet Union and open Polish territory to German forces. However, Stalin was looking forward to this, and Soviet forces sweep into Poland. The arrival of German forces manages to stop the advancing Soviet armies temporarily, buying time for England and France to bring forces into Poland. Latvia falls, and the Soviets stand upon the territory of Poland. However, the brave sacrifices and casualties of the Polish and German armies have stopped the Soviets before they could reach Warsaw, and crush Poland.