The USA and USSR weren't the only ones who were effected by the war. Many countries rankings were affected. For example Before WWII Lithuania Gained independence after WWI, but struggled as an independent nation during interwar era. During WWII USSR invades and occupies Lithuania in 1939/40. Remains under Soviet control until Germany decides to invade the USSR in 1941, capturing Lithuania that same year. Nazi occupation ends in 1944, when the USSR reverses the Nazi advance, pursuing the Nazi army west, back toward Germany. After WWII The USSR retains possession of Lithuania, establishing direct rule after the war. Another country affected by the war was the USSR. Before WWII The Soviet Union signs non-aggression pact with the Nazis where they essentially divide Eastern Europe between themselves. During WWII the USSR invades Finland, Estonia, Latvia, Lithuania and Eastern Poland. Finland resists, but others fall under Soviet control. The USSR loses most of these territories to the Nazis in 1941, as Nazis decide to take advantage of what they perceive to be a weakened USSR. After marching all the way to Moscow, the Red Army turns the tables, with the help of the harsh winter conditions and scorched earth tactics. The USSR retakes lost territories by 1944, also gaining all of Poland, Hungary, Czechoslovakia, and Balkan territories. Successfully launches invasion into Germany from east, helping to force Nazi surrender. Due to key role in defeat of Nazis, gains great power & influence in Europe, giving it role in deciding post-war map of Europe. After WWII Most of Eastern Europe was devastated and destabilized from WWII. The USSR takes advantage, setting up communist governments in Poland, Czechoslovakia, Hungary, Yugoslavia, Romania and Bulgaria. The Baltic nations of Estonia, Latvia and Lithuania are simply added directly to the Soviet Union. The USSR also keeps the northern part of East Prussia, naming it Kaliningrad Oblast, to give it a badly needed warm-water port in the Baltic Sea. With this gain in territory, the USSR becomes a leading world power, along with the U.S., as it is strengthened while other European powers are weakened.