One week after launching a massive invasion of the USSR, German divisions make staggering advances on Leningrad, Moscow, and Kiev.
Despite his signing of the Nazi-Soviet Pact of 1939, Soviet leader Joseph Stalin knew that war with Nazi Germany--the USSR's natural ideological enemy--was inevitable. In 1941, he received reports that German forces were massing along the USSR's eastern border. He ordered a partial mobilization, unwisely believing that Nazi leader Adolf Hitler would never open another front until Britain was subdued. Stalin was thus surprised by the invasion that came on June 22, 1941. On that day, 150 German divisions poured across the Soviet Union's 1,800-mile-long eastern frontier in one of the largest and most powerful military operations in history.
Aided by its far superior air force, the Luftwaffe, the Germans raced across the USSR in three great army groups, inflicting terrible casualties on the Red Army and Soviet civilians. On June 29, the cities of Riga and Ventspils in Latvia fell, 200 Soviet aircraft were shot down, and the encirclement of three Russian armies was nearly complete at Minsk in Belarus. Assisted by their Romanian and Finnish allies, the Germans conquered vast territory in the opening months of the invasion, and by mid-October the great Russian cities of Leningrad and Moscow were under siege.
However, like Napoleon Bonaparte in 1812, Hitler failed to take into account the Russian people's historic determination in resisting invaders. Although millions of Soviet soldiers and citizens perished in 1941, and to the rest of the world it seemed certain that the USSR would fall, the defiant Red Army and bitter Russian populace were steadily crushing Hitler's hopes for a quick victory. Stalin had far greater reserves of Red Army divisions than German intelligence had anticipated, and the Soviet government did not collapse from lack of popular support as expected. Confronted with the harsh reality of Nazi occupation, Soviets chose Stalin's regime as the lesser of two evils and willingly sacrificed themselves in what became known as the "Great Patriotic War."
The German offensive against Moscow stalled only 20 miles from the Kremlin, Leningrad's spirit of resistance remained strong, and the Soviet armament industry--transported by train to the safety of the east--carried on, safe from the fighting. Finally, what the Russians call "General Winter" rallied again to their cause, crippling the Germans' ability to maneuver and thinning the ranks of the divisions ordered to hold their positions until the next summer offensive. The winter of 1941 came early and was the worst in decades, and German troops without winter coats were decimated by the major Soviet counteroffensives that began in December.
In May 1942, the Germans, who had held their line at great cost, launched their summer offensive. They captured the Caucasus and pushed to the city of Stalingrad, where one of the greatest battles of World War II began. In November 1942, a massive Soviet counteroffensive was launched out of the rubble of Stalingrad, and at the end of January 1943 German Field Marshal Friedrich Paulus surrendered his encircled army. It was the turning point in the war, and the Soviets subsequently recaptured all the territory taken by the Germans in their 1942 offensive.
In July 1943, the Germans launched their last major attack, at Kursk; after two months of fierce battle involving thousands of tanks it ended in failure. From thereon, the Red Army steadily pushed the Germans back in a series of Soviet offensives. In January 1944, Leningrad was relieved, and a giant offensive to sweep the USSR clean of its invaders began in May. In January 1945, the Red Army launched its final offensive, driving into Czechoslovakia and Austria and, in late April, Berlin. The German capital was captured on May 2, and five days later Germany surrendered in World War II.
More than 18 million Soviet soldiers and civilians lost their lives in the Great Patriotic War. Germany lost more than three million men as a result of its disastrous invasion of the USSR.
Taken from: http://www.history.com/this-day-in-history/germans-advance-in-ussr [29.06.2012]