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
Kursk municipal division, the city of oblast significance of Kursk is incorporated as Kursk Urban Okrug. In addition to its importance as an administrative hub, Kursk is important as an industrial centre. Activity focuses on iron based industry, the chemical sector and a large food processing industry, reflecting the richness of agriculture in the surrounding "Black Earth" region. Particularly noteworthy is the so-called Kursk Magnetic Anomaly "(Russian: Курская магнитная аномалия)", the world's largest known iron-ore reserve, where the iron content of the ore ranges from 35% up to 60%. In Kurchatov, some to the south-west, is the Kursk Nuclear Power Plant,