Hitler wiped out 4 million Soviet troops. Why could Stalin counterattack?

During World War II, the Soviet army had a total of 2.2 million people on the front line, but it still couldn't resist the German army for half a step. More than 1,000 aircraft were destroyed by the Germans on the first day of the war, and more than 3,900 aircraft were destroyed three days later. Only half a year after the start of the war, 4 million Soviet troops were annihilated. In June 1941, the entire Soviet army was only 5 million!

Soon after, the Soviet army ushered in a great savior: Zhukov. The high-ranking Soviet army merged the heavily damaged Western Front and the Reserve Front into a new Western Front, with the famous Zhukov as its commander. Zhukov is a famous Victory Marshal, his arrival undoubtedly greatly improved the morale of the Soviet army.

When the German army reached Moscow, the weather in the Soviet Union had entered winter. It was freezing rain and then snowing. The temperature dropped to more than 30 degrees below zero. The German equipment could not be used, and the combat effectiveness of soldiers was greatly reduced. Soviet soldiers adapted to this climate. This was also the main reason for the defeat of Moscow, Germany. Therefore, it is not surprising that Stalin was able to launch a big counterattack!