Kursk would be the largest tank battle of the war. The Nazis amassed 3,000 tanks, including the Panthers and Tigers, and 1,800 tactical aircraft. The Soviets had 3,600 tanks and 1.3 million soldiers.
The battle began on July 4, 1943. Two large German pincers would involve the Ninth Army attacking from the north and the Fourth Panzer Army in the south. By July 11 it had bogged down and the Soviets counterattacked.
Hitler’s generals were right. The Soviets, beginning to master mobile warfare, noted the buildup of the German forces and began to plan their own counterattack. The battle was marked by German Stuka Ju-87D “tankbuster” warplanes, armed with 37mm cannon, destroying Soviet tanks and Ilyusin Il-2 Sturmovik “flying tanks” attacking German panzers with bombs and guns.
In the battle of Prokhorovka on July 12, 600 German tanks and 850 Red Army tanks clashed while a furious air battle raged overhead. The battle became a nightmare of attrition, as tanks were burned out in fierce tank-on-tank fighting. Both sides called in reinforcements.
On July 13, Hitler began to order a withdrawal, as the American landings in Sicily that day worried the German High Command about a landing in Italy. On July 17 the Germans began a full-scale retreat, leaving 70,000 dead and 2,950 wrecked tanks on the battlefield. The Soviets also lost many tanks, but since they claimed the battlefield, many of their losses were repaired and returned to battle within a few months. The Soviets immediately began a counteroffensive.
These losses, coming so soon after Stalingrad, ended the German initiative in the East. It would take time for the Russians to go over to the full offensive, but the Germans had mounted their last drive to conquer the Red Army and were now on the defensive.