Red Army military forces pushed the Axis armies back to the Romanian frontier in the south leaving a massive German salient, defended by Army Group Center, before Moscow.
The constant military pressure on the southern front led to a serious German intelligence failure in the summer of 1944. The Soviet summer offensive, opened on June 22, 1944, was directed against the Minsk salient. Army Group Center collapsed under the weight of the Red Army assault and the Soviet armed forces advanced on to the Vistula River line. The Balkans were cleared of German forces in the follow-up offensive.
The Soviet military offensive across Poland positioned the Red Army within the borders of prewar Germany.
Soviet attacks isolated Army Group Center (then renamed Army Group North) in East Prussia. German military resistance continued until the end of the war by which time Soviet pressure had reduced the pocket controlled by German armed forces to beachheads.
The German military plan and execution of offensive operations against Soviet forces advancing beyond Budapest failed to produce lasting results. Soviet counterattacks followed and pushed the German defenders back behind Vienna.
Soviet armed forces along the Oder and Neisse built-up continuously from the completion of the conquest of Polish territory in January. The final Red Army offensive ultimately overran eastern Germany and produced a link-up between Soviet and Allied forces.
Soviet armies complete the encirclement of Berlin and continued to press the attack into the city of Berlin. Most of the city was occupied within a matter of days.
German military resistance within Berlin continued and a prestige battle developed around the capture of the German parliament building (the Reichstag).