At the beginning of 1942, the German army suffered a major setback in the Moscow campaign, and the myth of Blitzkrieg was also broken by zhukov. Before the arrival of the summer campaign, the high command of both sides were planning how to fight the summer campaign well. For the Germans, winter combat has little advantage in battlefield environment and logistics supply; For the Soviet army, fighting in summer, muddy roads and rainy season is more conducive to the Soviet army to use the right time and place to launch a counterattack against the Germans.
Therefore, when summing up and reviewing the strategic deployment of the 1942 Eastern Front, some people think that the Germans should not launch the so-called "Blue Plan" action, but should launch a second attack on Moscow in summer while the Soviet troops in the central line are unstable. The main reason is that the Soviet army suffered heavy losses defending Moscow in the winter of 194 1, while the German army of1800,000 still had 65,438.
However, just as the Soviet army could not launch a longer-range counterattack at the same time, many new and urgent problems appeared in the battle of Moscow. On the one hand, the loss of armored tanks is too great, and after the reorganization of the four armored army groups, only 1 and the fourth armored army group are left as the main mobile forces on the eastern front; On the other hand, fuel and supplies have become an important threat that restricts the Germans from continuing to attack Moscow.
More importantly, in the battle of Moscow, it was also revealed that the railway communication line from Minsk to Moscow was a dead end. If the Germans want to launch fast mobile operations, they must rely on this line of communication to maintain the supply transportation in the east. After the battle of Moscow, the Soviet army also took this transportation artery as the key counterattack object.
As a result, the Germans deployed 70 divisions of the 4th and 9th Army on both sides of this traffic line, and the so-called Mo Deer became an expert in defense.
However, just as the German army needed local materials and occupied energy supply to enter the Caucasus, the Soviet army also regarded Ukraine and the Caucasus as important supply bases, and the railway artery from Rostov to Stalingrad to Moscow was another choice for the German army to attack Moscow from the southern line.
Therefore, the "Blue Plan" battle plan that took place on June 28th, 1942 was that the Germans tried to walk on two legs, which not only occupied the energy in the Caucasus, but also launched a circuitous operation in Moscow after occupying Stalingrad.
From this perspective, the "Blue Plan" is a grand plan to kill two birds with one stone. While Stalin and the Soviet high command were still concerned about Moscow's security, the Germans launched two attacks on the southern line at the same time, which was also an important reason why the Soviet army was caught off guard in Stalingrad.