First, the Soviet Union has endless war potential. Although the Germans annihilated a large number of Soviet troops in the early stage, the Soviet troops seemed to flow continuously. Every time the Germans annihilate a Soviet division, they will face the dilemma of fighting with the 10 division. Although the casualties of the Soviet army reached nearly 30 million, the number of soldiers was never less than100000. After two years of struggle, Soviet officers at all levels also quickly succeeded in the war. Su Juan's officers at all levels also grew rapidly in the war, Su Shi's theory of deep armored combat gradually improved, the German armored forces went to extinction step by step, while the Soviet armored forces went to the peak step by step.

The second point is the command of the general. Because Hitler was not good at commanding the army, he made many strategic and tactical mistakes, especially in the German blue battle of 1942, when Hitler divided his troops to attack Stalingrad and the Caucasus, he divided his troops. Hitler also mobilized Hult's Fourth Armored Army back and forth, wandering back and forth in the Caucasus and Stalingrad, wasting precious time. So that Stalingrad failed to shoot down in the end, Hitler not only commanded poorly, but also did not listen to advice, and was often forced to stop some battles, which caused many contradictions with the generals, leading to the strong leaders disobeying Hitler's orders and causing many losses at the front. Although Stalin sometimes went beyond the command of the troops, after learning the lesson, he let zhukov and other famous soldiers play their role and gave him great trust, thus winning many wars.

The third point is logistics. When the winter came, the Soviet Union had recovered its strength to a certain extent, but the German offensive began to be blocked. Due to logistical obstacles, the German winter clothes are seriously inadequate. In order to keep warm, German soldiers used out-of-stock gasoline as heating fuel, while the Soviet Union was equipped with warm coats, lined military boots and fur-covered hats. The cold temperature also led to the failure of German equipment, and the indispensable gasoline of German tanks and trucks was frozen and could not be used. Soviet tanks are new.

Fourth, the support of western countries, the United States and other western countries provided assistance to the Soviet Union. The United States provided the Soviet Union with various materials worth $65.438+009 billion, including more than 654.38+05,000 fighter planes, more than 7,000 tanks, 80,000 tons of various ships, 460,000 cars, millions of tons of aviation gasoline and 654.38+0.65438+.

Fifth, indomitable will to fight. Although the Soviet army was defeated all the way, after gaining a foothold, the Soviet Union began a national mobilization. The Soviet Union issued a mobilization order for everyone to be a soldier. The age of conscription was 17 to 55, and 800,000 women also set foot on the battlefield. It is with this will to fight that the Soviet Union can create miracles.

The sixth point is intelligence work. German intelligence divided the Soviet Union into five regions, set up more than 130 spy agencies and more than 60 spy schools, and sent well-trained Soviet prisoners of war to the front for them to collect intelligence. Soviet spy work is more effective than German army. The guerrillas moved to the rear of the Germans to find out their deployment and trends. The Soviet people provided German troops and marching routes. The accuracy of this information is often higher, and the Soviet Union has also arranged a large number of spy teams in Europe. The famous The red band is one of them, lurking in the political and business circles of Germany, France and other countries. So the Soviet intelligence agencies have mastered the next move of the Germans. So the Soviet Union can prepare for the war before the Germans.