The German Army was defeated, and the extent of the defeat was quite exaggerated.
This was something no one had anticipated since the war began, not even the Russians who had caused it all were expecting the Germans to experience such a massive defeat in Moscow.
In this battle, Germany and Russia had deployed a total of over five million troops, about 1.8 million from the German Army, and approximately 3.4 million from the Russian Army.
Yet, the significant disparity in numbers was not the fundamental reason for Germany's defeat in this battle. Ultimately, it was the weather and logistics that defeated Germany.
The casualties on both sides reveal much. The German Army suffered about 600,000 casualties, of which just under 220,000 soldiers died, and the others, though injured to varying degrees, were mostly not life-threatening.