Battle of Kursk (1943): The Largest Tank Battle in History

The Battle of Kursk was fought on the Eastern Front between 5 July and 23 August 1943, when the German army launched its last major offensive against the Soviet Union and was decisively defeated. Germany’s Operation Citadel tried to pinch off a large Soviet-held bulge around the city of Kursk, but it broke against deep Soviet defences within days. Soviet counter-offensives that followed retook Orel, Belgorod and Kharkov, and from then on the Red Army held the initiative until the war’s end in Berlin.

Background and preparations

The German invasion of the Soviet Union, Operation Barbarossa, had failed to win a quick victory in 1941. In the winter of 1942–1943 the German Sixth Army was destroyed at Stalingrad, and the Soviets pushed far to the west before Field Marshal Erich von Manstein counter-attacked and retook Kharkov in March 1943.

When the spring thaw ended the fighting, the front line had a huge bulge around Kursk, about 250 kilometres wide and up to 150 kilometres deep. German commanders saw an opportunity. By attacking the base of the salient from north and south at once, they hoped to encircle and destroy the Soviet forces inside, shorten their own line and win back the initiative.

The plan, codenamed Citadel (Zitadelle), was approved in April 1943. Hitler repeatedly postponed the start, from early May to July, partly to wait for new Panther tanks, Tiger heavy tanks and Ferdinand tank destroyers. The delay gave the Soviets time to prepare.

The Soviet high command, guided by Marshal Georgy Zhukov and the chief of the general staff, Aleksandr Vasilevsky, learned of the German plans through several intelligence sources. These included their own reconnaissance and agent networks, and information derived from British codebreaking, part of which reached Moscow officially and part through the Soviet spy John Cairncross. Instead of attacking first, Stalin was persuaded to let the Germans strike and wear themselves out on prepared defences, before switching to the offensive.

Inside the salient, Konstantin Rokossovsky’s Central Front held the northern face and Nikolai Vatutin’s Voronezh Front held the south. Behind them Ivan Konev’s Steppe Front waited as a strategic reserve. Soldiers and civilians dug several defensive belts with trenches, anti-tank ditches and gun positions, many kilometres deep, and laid hundreds of thousands of mines.

Numbers vary between sources depending on which units and dates are counted. Approximate figures commonly given by Glantz and House and other historians are:

The German offensive

Operation Citadel began on the morning of 5 July 1943. The Soviets, forewarned, had already fired a heavy artillery bombardment on German assembly areas shortly before.

In the north, General Walter Model’s Ninth Army attacked towards Olkhovatka and Ponyri. It made slow, costly progress through the Soviet minefields and defences, advancing no more than about 10–12 kilometres. By around 10–12 July the northern attack had effectively stalled. The railway village of Ponyri changed hands repeatedly in bitter fighting.

In the south, Colonel General Hermann Hoth’s Fourth Panzer Army and Army Detachment Kempf, under Manstein’s Army Group South, made deeper progress. Their armoured spearheads, including the three divisions of the II SS Panzer Corps, broke through several Soviet defence lines and advanced around 30–35 kilometres towards Oboyan and Prokhorovka.

Prokhorovka

On 12 July 1943 the Soviet 5th Guards Tank Army under General Pavel Rotmistrov counter-attacked the II SS Panzer Corps near the railway station of Prokhorovka. In confused fighting on a narrow front, Soviet tanks charged at close range to offset the longer reach of German guns.

Soviet losses were very heavy, with several hundred tanks destroyed or damaged, while German losses were much smaller. Even so, the attack blunted the German drive. For decades Soviet accounts portrayed Prokhorovka as a huge clash of about 1,500 tanks ending in a crushing German defeat; research since the 1990s has shown that far fewer German tanks took part and that the battle was tactically costly for the Red Army, though strategically the German advance had reached its limit.

In the air and behind the lines

Kursk was also one of the largest air battles on the Eastern Front. On the first day, German fighters inflicted heavy losses on Soviet aircraft trying to strike the German airfields and assembly areas. Over the following weeks, however, the Soviet air forces recovered, while the Luftwaffe’s strength was steadily worn down and increasingly diverted to other fronts.

New weapons appeared on both sides. German Henschel Hs 129 and Junkers Ju 87 aircraft armed with heavy cannon attacked Soviet tanks, while the Soviet Ilyushin Il-2 ground-attack aircraft used newly introduced small anti-tank bombs against German armour. On the ground, the Ferdinand tank destroyers of the Ninth Army proved powerful but, lacking machine guns at first, were vulnerable to Soviet infantry once separated from their supporting troops.

Behind the German lines, Soviet partisans attacked railways that supplied the armies around Kursk. In early August 1943 they launched a coordinated campaign of sabotage known as the “Rail War”, setting off thousands of demolition charges on tracks across occupied Belarus and Russia. It disrupted German supply and troop movements at a critical moment, though the Germans repaired much of the damage quickly.

Citadel called off and the Soviet counter-attack

On the same day, 12 July, the Soviet Western and Bryansk Fronts launched Operation Kutuzov against the German-held Orel bulge north of the salient, threatening Model’s rear. Two days earlier, on 10 July, the Western Allies had landed in Sicily.

On 13 July Hitler met Manstein and Field Marshal Günther von Kluge and ordered Citadel to be halted. Manstein argued for continuing in the south, but within days German formations, including SS panzer divisions, were being withdrawn or sent elsewhere.

The Red Army now moved over to the offensive along a wide front. Operation Kutuzov pushed the Germans out of the Orel bulge, and on 3 August the Voronezh and Steppe Fronts began Operation Polkovodets Rumyantsev in the south.

Orel and Belgorod were liberated on 5 August 1943. That evening Moscow fired its first artillery salute of the war to celebrate a victory, a tradition repeated many times afterwards. Kharkov, which had changed hands several times, was taken for the last time on 23 August, the date usually given as the end of the Battle of Kursk.

Casualty figures are uncertain and still debated. Soviet official figures compiled by Krivosheev give about 178,000 casualties for the defensive phase alone and roughly 860,000 for the whole battle, including the counter-offensives, with more than 6,000 tanks and self-propelled guns lost. German losses are usually estimated at roughly 50,000–55,000 for Citadel itself and about 170,000–200,000 for July and August as a whole. German tank losses were far lower than Soviet ones, but Germany could not replace men and equipment at the same rate.

Key people

Erich von Manstein commanded Army Group South and had proposed alternative plans before Citadel. Walter Model led the Ninth Army in the north and was sceptical of the offensive. Georgy Zhukov coordinated the Soviet fronts in the north and planned the counter-offensives. Konstantin Rokossovsky and Nikolai Vatutin commanded the Central and Voronezh Fronts that absorbed the German attacks.

Myths and facts

The most persistent myth concerns Prokhorovka, long described as the largest tank battle in history in its own right, with some 1,500 tanks and the destruction of hundreds of German Tigers. Modern studies based on German and Soviet archives put the number of tanks engaged there much lower, roughly 800–900 in total, of which about 300 were German, and show that German losses that day were modest. The title of largest tank battle belongs more properly to the Kursk campaign as a whole.

Another claim is that the Germans lost Citadel because of the Panther’s teething problems. The new tank did suffer many breakdowns, but the decisive factors were the depth of Soviet defences, Soviet numerical superiority and the threats elsewhere.

Timeline

• 1943, 15 April: Hitler issues the operational order for Citadel.
• 1943, 5 July: Operation Citadel begins against the north and south of the Kursk salient.
• 1943, 10 July: The Western Allies land in Sicily.
• 1943, 12 July: Tank battle at Prokhorovka; the Soviet Orel offensive begins.
• 1943, 13 July: Hitler orders Citadel to be halted.
• 1943, 3 August: The Soviet Belgorod–Kharkov offensive begins.
• 1943, 5 August: Orel and Belgorod are liberated; Moscow fires its first victory salute.
• 1943, 23 August: Soviet forces retake Kharkov, ending the battle.

Consequences

After Kursk, Germany never again launched a major strategic offensive on the Eastern Front. The Red Army advanced to the Dnieper in the autumn of 1943, liberated Kiev in November and went on to destroy Army Group Centre in Operation Bagration in 1944. Together with Stalingrad, Kursk is regarded as one of the two great turning points of the war in the East.

Why it matters

Kursk showed that the Red Army could stop a full German armoured offensive in summer and immediately counter-attack. It turned the balance of the war on the Eastern Front permanently in the Soviet favour, at an immense human cost on both sides.