The Battle of Kursk, 1943: The Greatest Tank Battle

In the summer of 1943 the German army gambled everything on a single hammer blow. On the maps a great Soviet bulge, or salient, jutted westward around the city of Kursk, and Hitler's generals resolved to pinch it off and destroy the Red Army massed inside. Instead they walked into the most heavily fortified killing ground of the war, and what unfolded across the fields around Kursk that July became what is often called the largest series of armored clashes in history and the moment the initiative on the Eastern Front passed forever to the Soviets.²

Operation Citadel

The German plan, codenamed Operation Citadel, was simple in shape: two pincers would strike the northern and southern shoulders of the Kursk salient and meet behind the city, trapping enormous Soviet forces. Hitler repeatedly delayed the attack from spring into July 1943 to wait for new Tiger and Panther tanks and Ferdinand assault guns, machines he hoped would prove decisive. But every week of delay was a gift to the defenders. The Soviets, forewarned by excellent intelligence, guessed the plan almost exactly and chose deliberately to stand on the defensive first, absorbing the blow before counterattacking.³

The bulge itself was a legacy of the winter fighting that followed the German disaster at Stalingrad. American accounts put it at roughly 150 to 160 miles (240 to 260 km) from north to south and about 100 miles (160 km) from east to west. Army Group Center under Günther von Kluge was to attack its northern face and Army Group South under Erich von Manstein its southern face: in the north Walter Model's 9th Army, in the south Hermann Hoth's 4th Panzer Army. Not everyone believed in the plan. Heinz Guderian argued against the offensive in May, and Model warned that even success would cost so much that it would be a Pyrrhic victory.⁴

How many soldiers and tanks fought at Kursk?

Between roughly two million and 2.7 million soldiers and about 6,000 tanks took part, which places Kursk among the largest battles in history. Britannica gives some 2,000,000 troops, 6,000 tanks and 4,000 aircraft for the whole battle, and World History Encyclopedia also counts nearly 6,000 tanks. Exact totals depend on which phase is counted.⁵

For the German attack force, Germany's national history museum counts about 800,000 soldiers, more than 2,000 tanks, some 70 percent of all German armor in the East, and 1,400 aircraft. The historian David Glantz, as cited by The National WWII Museum, gives more than 780,000 men with nearly 3,000 tanks. Against them the museum in Berlin sets about 1.35 million Red Army soldiers with nearly 4,000 tanks and assault guns, while Glantz gives more than 1.9 million men and over 5,000 tanks. Once the Soviet counteroffensives began, both sides fed in more: by Glantz's count the Red Army rose to more than 2.5 million men and 7,300 tanks, against more than 940,000 Germans with 3,200 tanks.⁶

A wall of defenses

While the Germans waited, the Red Army turned the salient into perhaps the deepest defensive system ever built. Across the plains around Kursk, hundreds of thousands of civilians and soldiers dug belt after belt of trenches, laid vast minefields and sited thousands of anti-tank guns in mutually supporting strongpoints. World History Encyclopedia counts 943,000 mines laid around the salient, with up to 2,500 anti-personnel and 2,200 anti-tank mines per mile of front in some sectors; HISTORY gives a total of nearly one million. The defensive belts ran back for tens of kilometers, and a powerful strategic reserve, the Steppe Front, waited behind the salient ready to counterattack.⁷

When Citadel finally opened on 5 July 1943, German armor ground forward into this maze under a storm of fire. In the north the attack stalled within days after only limited gains. In the south the Germans pushed deeper, but every kilometer was paid for in burning tanks and dead crews.⁸

The northern and southern pincers

Soviet guns opened a preemptive barrage only hours before the German attack on 5 July; it delayed the assault but did little damage. In the north, Model's 9th Army ran into the Central Front under Konstantin Rokossovsky and advanced only about 10 kilometers (6 miles). On 9 July Model reported that reaching Kursk was no longer possible, and by 10 July his advance had been halted.⁹

In the south, Hoth's 4th Panzer Army, with SS panzer divisions at its spearhead, struck the Voronezh Front under Nikolai Vatutin and pushed toward Oboyan. It gained a little over 30 kilometers (about 19 miles), the deepest German penetration of the battle. The new Panther tanks made their debut here, and many broke down with mechanical faults in the first week. Behind the Soviet lines, Georgy Zhukov, who coordinated the Soviet effort for the high command, prepared to commit the reserves.¹⁰

Prokhorovka

The climax came on 12 July 1943 near the village of Prokhorovka, where advancing German panzers collided with a massive Soviet armored counterstroke. In the version handed down by Soviet accounts, hundreds of tanks fired at point-blank range across the dust and smoke of the open steppe in a swirling melee, and the clash became legendary as one of the greatest tank battles ever fought. Soviet losses were far heavier than German ones, and though the details are still argued by historians, the German drive in the south was blunted for good. In those same days, far to the south-west, the Western Allies landed in Sicily, and Hitler began pulling divisions away from the East.¹¹ › Battle of Prokhorovka, 1943

The number of tanks that actually fought at Prokhorovka is disputed. The memoirs of Pavel Rotmistrov, commander of the Soviet 5th Guards Tank Army, spoke of 700 to 800 tanks on each side. Working from unit records, Valeriy Zamulin and Niklas Zetterling and Anders Frankson, authors of Kursk 1943: A Statistical Analysis, arrive, as summarized by The Tank Museum, at about 910 tanks in the narrowest sense of the battle, 294 German and 616 Soviet, or about 1,300 if neighboring units are included. World History Encyclopedia gives some 300 Axis tanks against 900 Soviet ones, fighting in around 25 separate pockets.¹²

On the same records, the 5th Guards Tank Army lost 359 tanks and assault guns on 12 July, 207 of them beyond repair, while the two German panzer corps involved recorded 193 damaged and only about 20 total losses. The German historian Karl-Heinz Frieser and the British historian Ben Wheatley go further and judge Prokhorovka a clear German tactical victory. Even so, the Germans did not take Prokhorovka, and the third Soviet defensive belt held.¹³

Was Kursk the largest tank battle in history?

Taken as a whole, Kursk is usually called the largest tank battle in history: some 6,000 tanks fought over seven weeks, so it is best described as the largest series of tank battles. The single clash at Prokhorovka was smaller than legend says, and many historians now give that record for one engagement to Brody and Dubno in June 1941.¹⁴

The Tank Museum, summarizing research in the Soviet and German archives, puts up to 3,500 Soviet and 750 German tanks at Brody, and both David Glantz and Valeriy Zamulin have argued that Brody involved more tanks than Prokhorovka. HISTORY notes the same claim by Russian military historians working in the opened Soviet archives. What sets Kursk apart is the scale of the whole battle rather than a single day of fighting; our World War II battles quiz describes it the same way.¹⁵

Why did Operation Citadel fail?

Citadel failed because it had lost surprise before it began. Hitler's delays from May to July gave the Red Army time to build deep defenses, intelligence revealed the plan, the Soviets massed far more men and tanks, and the Allied landing in Sicily on 10 July drew German forces away.¹⁶

British codebreakers had learned details of the planned offensive, and warnings reached the Red Army. Germany's national history museum sums up the result: an attack the enemy had long expected, with no element of surprise, ran into a deeply layered defensive system. Model and Hoth had both doubted that they could break through with the forces they had. When the decisive breakthrough did not come, Hitler ordered the attacks stopped on 13 July, partly to send forces to Italy after the landing in Sicily.¹⁷

The tide turns

With Citadel broken, the Soviets unleashed the counteroffensives they had prepared, codenamed Operation Kutuzov in the north and Operation Rumyantsev in the south, driving the exhausted Germans back and retaking cities including Orel and Kharkov within weeks. Operation Kutuzov struck the German-held Orel bulge on 12 July. Model began withdrawing from Orel on 31 July, and the Germans were out of the city by 5 August. In the south, the Red Army retook Kharkov on 23 August 1943, the date usually given for the end of the battle.¹⁸ › Operation Kutuzov, 1943

Kursk cost both armies staggering numbers of men and machines, with casualties in the hundreds of thousands and thousands of tanks destroyed or damaged. Crucially, Germany could not replace its losses while the Soviet Union could. After Kursk the Wehrmacht in the East never mounted another strategic offensive of that scale, and the long retreat toward Berlin had begun. Kursk is widely remembered as a decisive turning point on the Eastern Front: the gamble of 1943 had failed completely. For how it fits among Moscow, Stalingrad and Berlin, see the greatest battles of the Eastern Front.

How long did the Battle of Kursk last?

The Battle of Kursk lasted 50 days, from 5 July to 23 August 1943. Operation Citadel itself, the German offensive, ran only from 5 July until Hitler halted it on 13 July. The rest of the battle was the Soviet counteroffensives, Kutuzov and Rumyantsev, which ended with the recapture of Kharkov.¹⁹

1. 5 July 1943Operation Citadel opens against both faces of the salient.²⁰
2. 10 JulyThe Western Allies land in Sicily.²¹
3. 12 JulyTank battle near Prokhorovka; Operation Kutuzov strikes the Orel bulge.²²
4. 13 JulyHitler halts Citadel.²³
5. 5 AugustThe Germans are out of Orel.²⁴
6. 23 AugustThe Red Army retakes Kharkov, the usual end date of the battle.²⁵

How many soldiers died at the Battle of Kursk?

No exact figure exists, but casualties on both sides together ran to roughly 870,000 to 1,000,000 men. Soviet losses were several times heavier: about 685,000 to 800,000, against roughly 185,000 to 200,000 German casualties, in the estimates of David Glantz and Karl-Heinz Frieser and in HISTORY's account.²⁶

These are casualties, not deaths alone: Glantz's Soviet figure counts the dead plus the wounded who could not return to battle. In Operation Kutuzov alone the Red Army suffered more than 429,000 casualties, more than the total number of American dead in the whole war. HISTORY adds that some historians believe even these numbers are too low. Operation Citadel itself already showed the pattern: on the southern face, World History Encyclopedia counts 33,700 German casualties against 117,000 Soviet ones. Germany's national history museum stresses the difference that mattered: the Soviet Union could absorb its losses in men and tanks far better than Germany could.²⁷

Where was the Battle of Kursk fought, and what is there today?

The battle was fought across the Kursk salient in western Russia, between Orel in the north and Belgorod in the south, near today's border with Ukraine. The southern counteroffensive ended at Kharkov (Kharkiv). The tank clash of 12 July took place near the village of Prokhorovka, southeast of Kursk, where the battlefield is now a memorial site with a museum.²⁸

According to the museum at Prokhorovka, a museum to the battle was founded in the village in 1973, and the memorial complex known as the Third Battlefield of Russia was unveiled on 2 May 2010. Valeriy Zamulin, author of the most detailed modern study of the tank battle, was formerly a curator of the Prokhorovka museum.²⁹

See where Kursk stands among the greatest battles of World War II, then test your sense of scale in Which Battle Was Bigger?