Dnieper–Carpathian offensive

• 1. Introduction

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  The Dnieper-Carpathian offensive, fought from late December 1943 to early May 1944, was one of the largest military operations in the history of the Second World War. It stretched across a front of 1,200 kilometers and drew nearly 3,500,000 troops from both sides into a grinding, mud-soaked campaign across the breadth of Ukraine. When it was over, German general Kurt von Tippelskirch called it the biggest Wehrmacht defeat since Stalingrad. How did the Red Army manage to push an enemy that controlled 40 percent of all German troops on the Eastern Front into a catastrophic collapse? What role did the Ukrainian spring mud play in the outcome? And what does a battle fought in the fields of Ukraine have to do with the Allied landings in Normandy just weeks later?

• 2. Why Ukraine Mattered

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  Right-bank Ukraine was not simply a stretch of occupied territory. It produced iron ore around Krivoy Rog, manganese around Nikopol, and oil in the Drohobych district. It held first-class Black Sea ports, including Odessa, Sevastopol, Feodosiya, and Kerch. Wheat, sugar beet, maize, rye, and barley grew across its plains. For the German high command, holding this region was an economic calculation as much as a military one. Food and raw materials could be exported directly to Germany as long as the lines held.

  Political anxiety ran alongside the economic motive. German general Tippelskirch wrote at the time that the front was rapidly approaching the Balkans, and that Romania, Bulgaria, and Hungary might abandon the Axis if events continued at the same pace. The example of Italy, which had switched sides in 1943, was, in his words, "highly indicative." So the decision to defend every kilometer of Ukrainian soil had consequences far beyond the battlefield, binding German strategy to an increasingly untenable position.

  Both Erich von Manstein, commanding Army Group South, and Ewald von Kleist, commanding Army Group A, understood the danger. Both repeatedly asked Hitler for permission to withdraw to shorter, more defensible lines. Hitler refused each time, ordering his armies to stand where they were. German troops often retreated anyway, sometimes submitting fictitious reports to justify their movements, or simply pulling back in direct disregard of orders.

• 3. The Armies in Position

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  By late 1943, twenty-two of the thirty panzer and panzer-grenadier divisions available to Germany were stationed in Ukraine. The combined German-Romanian-Hungarian force on the right bank of the Dnieper totaled 93 divisions, including 18 panzer and 4 panzer-grenadier divisions, along with three heavy panzer battalions of Tiger tanks and 18 StuG assault gun brigades. It represented 40 percent of all German troops on the Eastern Front and 72 percent of all panzer divisions.

  The Soviet side matched this with four Ukrainian Fronts. Nikolai Vatutin commanded the 1st Ukrainian Front from the Kiev area. Ivan Konev led the 2nd Ukrainian Front to the south. Rodion Malinovsky's 3rd Ukrainian Front extended further south still. Fyodor Tolbukhin's 4th Ukrainian Front held the southernmost sector and was tasked with cutting off the German 17th Army in Crimea. At the start of January 1944, these four fronts combined fielded 169 rifle divisions, 9 cavalry divisions, 18 tank and mechanized corps, 31,530 guns and mortars, 1,908 tanks, and 2,364 combat aircraft.

  Coordinating the northern effort was Marshal Georgy Zhukov, acting as the Stavka representative for the 1st and 2nd Ukrainian Fronts. Marshal Aleksandr Vasilevsky coordinated the 3rd and 4th. The plan called for the Soviet fronts to crush Army Group South from multiple directions simultaneously, splitting it along the line of the Carpathian Mountains and stripping Germany of its economic grip on Ukraine.

• 4. Mud, Rivers, and Rasputitsa

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  British journalist Alexander Werth, who was traveling with the 2nd Ukrainian Front in the spring of 1944, wrote that the Ukrainian mud "has to be seen to be believed." Roads ran like rivers of mud, often two feet deep, with holes that stopped most vehicles. Werth noted that the Russian T-34 tank could manage it; most German tanks could not.

  The winter of 1943-1944 was unusually warm compared to the previous Eastern Front winters. During the winter of 1941-1942 around Moscow, temperatures had dropped as low as minus 40 degrees Celsius. In the winter of 1942-1943 after Stalingrad, the cold reached at least minus 20. But in January 1944, snow was already melting across Ukraine. For ten days between the 27th of January and the 18th of February, constant rain and wet snowfall alternated with brief freezes. Daily temperatures swung between minus 5.5 and plus 4.9 degrees Celsius.

  The human cost of this environment became vivid at the Gniloy Tikich River during the Korsun breakout in February. Normally no wider than a brook in summer, the river flooded after three weeks of thaw to a width of 20 to 30 meters. German soldiers, cut off in the Korsun Pocket and having already lost their engineering equipment, had no bridge and no boats. Soviet tanks arrived and opened fire. The banks of the Gniloy Tikich became, in the account preserved from the time, a grave for thousands. Soldiers threw themselves into the icy water; many drowned or died of frostbite. The Red Army became, in the judgment of Soviet sources, the only force in the history of warfare to launch large-scale, successful offensives through spring mud and flooded rivers.

• 5. The Korsun Pocket

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  On the 24th of January 1944, the Korsun-Shevchenkovsky offensive opened with a massive bombardment. The 2nd Ukrainian Front's 4th Guards and 53rd Armies attacked south of the Korsun bulge, with the 5th Guards Tank Army joining the next day. On the 26th of January, the 1st Ukrainian Front dispatched the 6th Guards Tank Army from the north. The two forces met on the 28th of January, encircling roughly 60,000 Germans in the XI and XXXXII Army Corps. Soviet forces called the resulting cauldron "Little Stalingrad" because of the ferocity of fighting inside it. Twenty-seven Soviet divisions were assigned to reduce the pocket.

  Manstein dispatched Hans Hube on the 4th of February with the 1st Panzer Army, including XLVII and III Panzer Corps, to break through from the outside. Both corps became bogged down in the mud. Zhukov issued a formal surrender demand on the 8th of February; the trapped commanders refused. III Panzer Corps eventually reached Lysyanka, close to the pocket's perimeter. Wilhelm Stemmermann, commanding the trapped forces, decided on the night of the 16th-the 17th of February to attempt a final breakout. The attempt partly succeeded, but at enormous cost. The Soviets took approximately 15,000 prisoners and killed at least 10,000 Germans, including Stemmermann himself.

  The conditions inside the pocket were brutal by any measure. Russian prisoners of war were shot by German troops during the retreat. Konev later admitted that he had permitted his cavalry to cut down soldiers who attempted to surrender with raised hands. The pocket's collapse set the stage for the even larger Soviet encirclement attempt that would follow in March.

• 6. The Proskurov Trap

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  By late February 1944, the German headquarters for the Eastern Front, the OKH, had concluded that the Soviet offensive effort was spent. The lull was real, but it masked a secret concentration of forces. For the first and only time in the war, all six elite Soviet tank armies were brought together in Ukraine simultaneously.

  On the 4th of March, the 1st Ukrainian Front - now commanded by Zhukov following Vatutin's death - opened the Proskurov-Chernovtsy offensive with a fierce artillery barrage. The muddy conditions hurt German mobility while Soviet tracked vehicles pressed the advance. By the 28th of March, Hube's 1st Panzer Army was entirely encircled. Manstein flew to Hitler's headquarters and successfully argued for abandoning the "fortress" directive that required encircled units to stand in place. He also secured II SS Panzer Corps as reinforcement - the first transfer of forces from the Western Front to the Eastern Front under Hitler's Directive 51.

  Hube struck out of the pocket on the 30th of March, moving west rather than south, which Soviet intelligence had not anticipated. By the 10th of April, his forces linked up with the Fourth Panzer Army. Despite this partial escape, Hitler blamed his generals for the overall strategic disaster. He dismissed both Manstein and Kleist on the 5th of April 1944, replacing them with Walther Model and Ferdinand Schörner respectively. Army Group South was renamed Army Group North Ukraine; Army Group A became Army Group South Ukraine. The renaming was, in itself, an acknowledgment that almost nothing of Ukraine remained in German hands.

• 7. Reaching Odessa and Romania

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  Vasili Chuikov's 8th Guards Army and the 46th Army attacked through a blizzard on the 2nd of April 1944. By the 6th of April, they had pushed the defenders beyond the Dniester River and isolated Odessa. The city capitulated on the 10th of April, and Soviet troops began entering Romania proper.

  The fall of Odessa followed a chain of rapid advances across southern Ukraine. The 2nd Ukrainian Front destroyed two Panzer Corps at Uman on the 10th of March. Karl-Adolf Hollidt managed to break out of encirclement near Nikolaev by the 11th of March, but had lost Hitler's confidence in doing so and was replaced by Maximilian de Angelis. German forces fell back from the Bug River on the 28th of March. The Prut had fallen by the 25th of March.

  In Crimea, the German 17th Army - cut off since the autumn of 1943 - was annihilated during the April-May Crimean offensive. The five German and seven Romanian divisions that made up the force were largely destroyed. Meanwhile, the heavy casualties suffered by Romanian forces across the campaign and the proximity of Soviet armies to Romania's border pushed Romanian leaders to begin secret peace talks in Moscow shortly after the offensive concluded.

• 8. Consequences Beyond Ukraine

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  Between January and May 1944, the German high command transferred a total of 34 divisions, 550,000 men, and 853 tanks, assault guns, and self-propelled guns to Ukraine from France, Germany, Denmark, Poland, the Balkans, Army Group Center, and Army Group North. Eight divisions moved in January and February; another 26 followed between March and May.

  The consequences of those transfers reached as far as Normandy. On the 6th of June 1944, German forces in France had been stripped of 45,827 troops and 363 tanks, assault guns, and self-propelled guns as a direct result of the Kamenets-Podolsky pocket. Army Group Center was in worse shape: on the 22nd of June 1944, when Operation Bagration opened, it had lost a total of 125,380 troops and 552 tanks, assault guns, and self-propelled guns to the Ukrainian front. The German high command, expecting the main Soviet summer offensive to strike in the south again, had further concentrated reinforcements there and away from Army Group Center. That miscalculation made Operation Bagration catastrophic for Germany.

  The Red Army had also, during this campaign, reached the June 1941 borders of the Soviet Union, recovering the territory taken during the 1939 Soviet invasion of Poland. Army Group South was permanently split in two, its northern and southern halves now separated by the Carpathian Mountains and dependent on Romanian railroads, which were in poor condition, for any coordination. Tippelskirch later wrote that even skilled generals like Manstein and Kleist could not save the German troops from what he regarded as their greatest defeat since the retreat from the Volga and the Caucasus.