Battle of Kursk of the offensive. July and August 1943 saw the heaviest German ammunition expenditure on the Eastern Front up to that point, with 236,915 tons consumed in July and 254,648 in August. The previous peak had been 160,645 tons in September 1942. The Red Army used two Fronts for the defence of Kursk, and created a third front behind the battle area which was held as a reserve. The Central and Voronezh Fronts fielded 12 armies, with 711,575 men (510,983 combat soldiers) and 625,591 men (446,236 combat soldiers) respectively. In reserve, the Steppe Front had an additional 573,195 men (449,133). Thus
Battle of Kursk amid poor weather and with the German forces exhausted and in need of refitting, the offensives of Operational Order No. 5 were postponed. On 15 April, Hitler issued Operational Order No. 6, which called for the Kursk offensive operation, codenamed "Zitadelle" ("Citadel"), to begin on 3 May or shortly thereafter. The directive was drafted by Kurt Zeitzler, the OKH Chief of Staff. For the offensive to succeed it was deemed essential to attack before the Soviets had a chance to prepare extensive defences or to launch an offensive of their own. Some military historians have described the operation using the