However, before the Battle of Kursk in July 1943, the strength and weapon contrast of the entire Soviet-German battlefield had undergone fundamental changes. After the national economy of the Soviet Union was brought into wartime orbit, arms production was more widely carried out, and the output of new weapons increased greatly. With the rapid development of military economy and the improvement of combat skills, from the spring of 1943 to the early summer, various services and arms of the Soviet Union were reorganized on a large scale, and a large number of tank army groups and air force army groups were formed, basically completing the establishment of the first-class organizational system of the whole army. Soviet troops are equipped with all kinds of new weapons and equipment, such as improved tanks, self-propelled artillery, aircraft, and a large number of artillery, mortars, automatic rifles and ammunition. By the beginning of July, the Soviet army had gained the advantage over the German army: 0.2 times more troops, 0.9 times more artillery, 0.7 times more tanks and 2.4 times more planes. The main quality indexes of many weapons and equipment have surpassed those of similar weapons and equipment in Germany.