What was the first reason why the Soviet Union defeated Germany?

The Soviet-German War was the worst war in World War II, which lasted for 3 years 10 months, causing a large number of casualties, and was a disaster in human history. The final result was Germany's defeat and unconditional surrender. So what is the biggest reason why the Soviet Union defeated Germany? I think it is tenacious.

194 1 year, the war broke out. Although the Soviet Union had intelligence that Germany would attack the Soviet Union, none of the top Soviet officials, including Stalin, made it clear that Germany would attack the Soviet Union. In fact, Stalin thought it was reasonable. After the defeat of France, the Germans are attacking Britain, and Germany's next goal is Britain. Therefore, it can be confirmed that the Soviet Union was not fully prepared for the war. The Soviet Union's fighting capacity is not high. The Soviet Union has just gone through a great purge, in which many excellent generals were executed. Some excellent generals can't be reused, so the Soviet army's command ability and combat effectiveness were not strong in the early stage, and the Soviet army showed signs of being beaten out of the water by the Germans.

If this situation continues, the Soviet Union will be defeated, which is also the purpose of senior German generals, because Germany's idea is to defeat the powerful enemy in lightning speed, otherwise Germany can't afford to delay. The recovered Stalin and Soviet generals clearly saw the purpose of the German army. If they want to defeat the powerful enemy, they must stall the enemy. Therefore, when the Germans approached Moscow, the capital of the Soviet Union, the Soviet Union had no choice but to move the capital and launch a defense war in Moscow. However, it is generally emphasized by later generations that the winter in the Soviet Union came early and Germany was caught off guard, which is unrealistic. The main time of the German attack was 165438+ 10, when the temperature in Moscow was not particularly low. According to records, the temperature dropped to-15 degrees in just a few days, and the rest of the weather was basically around-10 degrees. This temperature can't be said to be low, German equipment can still be used, and people will not be frostbitten. Therefore, the theory of great cold is untenable. According to records, the real cold appeared in June+February, 5438, when the Germans retreated, and it became the weapon of the Soviet Union.

Before the war, the Soviet Union had no real allies, France, a big European country, had fallen, and the British themselves were hard to protect. Even if the British did not face the danger of Germany, they would not help the Soviet Union. Before Japan attacked Pearl Harbor, the United States generally didn't want to get involved in the war. The United States still makes money on arms, and they want to watch the fun. At this time, the Soviet Union did not have as many allies as Germany. Although Germany's ally Italy has always been a funny character, it has sent troops to the Far East. The threat of Japan in the Far East also made it necessary for the Soviet Union to divide its troops and stay in the Far East. The Soviet Union seems to have great strategic depth. In fact, the Soviet capital Moscow, Leningrad, Kiev, Minsk and other big cities are not far from the European border of the Soviet Union. In order to ensure the security of Moscow and Leningrad, the Soviet Union annexed the three Baltic countries, followed by eastern Poland, western Ukraine and western Belarus. In this case, it also caused dissatisfaction among residents in these areas. In the Soviet-German War, many people in these areas chose to support the Germans.