The Battle of Kursk unfolds as the last major German offensive on the Eastern Front, the moment the Wehrmacht's initiative in the east finally runs out. The film breaks the battle down through numbers: tank counts, casualty figures, production totals, and the arithmetic of attrition that favored the Red Army despite catastrophic Soviet losses. It traces how Soviet industry kept replacing men and machines faster than Germany could match, and how the T-34 tank, produced in overwhelming quantity, tipped the balance of the armored fighting around Prokhorovka. Archival footage, maps, and battlefield statistics carry the narration through the planning of Operation Citadel, the German gamble to pinch off the Kursk salient, and the counteroffensives that followed its failure. Rather than treating Kursk as a single dramatic clash, the film uses the scale of the numbers involved, the largest tank engagement of the war, to explain why this battle marked a permanent shift in momentum toward the Soviets for the remainder of the war.