Vistula–Oder offensive

• 1. Strategic Context And Preparation

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  In the wake of Operation Bagration, Soviet forces secured two bridgeheads west of the Vistula river between the 27th of July and the 4th of August 1944. The Red Army remained inactive during the failed Warsaw uprising that started on the 1st of August, though their frontline was not far from the insurgents. General Reinhard Gehlen, head of Fremde Heere Ost, passed his assessment to Heinz Guderian. Guderian in turn presented the intelligence results to Adolf Hitler, who refused to believe them. Hitler dismissed the apparent Soviet strength as "the greatest imposture since Genghis Khan". The offensive was brought forward from 20 to the 12th of January because meteorological reports warned of a thaw later in the month. Tanks needed hard ground for the offensive. It was not done to assist American and British forces during the Battle of the Bulge, as Stalin chose to claim at Yalta.

• 2. Soviet Forces And Command Structure

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  Two fronts of the Red Army were directly involved in this massive operation. The 1st Belorussian Front held the sector around Warsaw and southward in the Magnuszew and Puławy bridgeheads. Marshal Georgy Zhukov led this front. The 1st Ukrainian Front occupied the Sandomierz bridgehead, some 200 km south of Warsaw. Marshal Ivan Konev commanded this second front. Zhukov and Konev had 163 divisions for the operation with a total of 2,203,000 infantry. They possessed 4,529 tanks and 2,513 assault guns. Their artillery count reached 13,763 pieces of field artillery. Mortars numbered 14,812 and anti-tank guns totaled 4,936. Katyusha multiple rocket launchers stood at 2,198. Five thousand aircraft supported the ground forces. Soviet forces greatly outnumbered the opposing Wehrmacht in every category.

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• 3. German Defensive Collapse And Countermeasures

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  Against them, the German Army Group A was led by Colonel-General Josef Harpe. He was soon replaced by Colonel-General Ferdinand Schörner on the 20th of January. The Germans were outnumbered five to one. Hitler reportedly scoffed at the numbers and is quoted as saying "It is the greatest bluff since Genghis Khan". In the large Baranow/Sandomierz bridgehead, the Fourth Panzer Army was required to defend from strongpoints. It lacked the infantry to man a continuous front line. On Hitler's express orders, the two German defence lines were positioned very close to each other. This placed the main defences well within striking range of Soviet artillery. The only major German response came on the 15th of January when Hitler ordered the Panzerkorps Großdeutschland from East Prussia to cover the breach. Zhukov's forces forced it to detrain at Łódź without even reaching its objective.

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• 4. Rapid Advance To The Oder River

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  The offensive commenced in the Baranow bridgehead at 04:35 on the 12th of January with an intense bombardment. Concentrated against the divisions of XLVIII Panzer Corps, the bombardment effectively destroyed their capacity to respond. By the 14th of January, the 1st Ukrainian Front had forced crossings of the Nida river. Kraków was secured undamaged on the 19th of January after an encirclement by the 59th and 60th armies. Warsaw was taken on the 17th of January as Army Group A's headquarters issued orders for the city to be abandoned. Units of the 2nd Guards and 3rd Shock Armies entering the city were profoundly affected by the devastation. The 8th Guards Army reached Łódź by the 18th of January and took it by the 19th of January. The 1st Guards Tank Army moved to encircle Poznań by the 25th of January. On the 27th of January, the abandoned Wolf's Lair was captured. Stavka declared the operation complete on the 2nd of February.

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• 5. Liberation Of Concentration Camps

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  In July 1944, the Soviet 8th Guards liberated Lublin and came upon the Majdanek concentration camp. After being caught off guard at Majdanek, the Nazis realized that the Soviets would end up finding every camp within Eastern Europe. As a result, by mid-January, SS and Nazi-controlled police units began forcing thousands of camp prisoners from Poland, East Prussia, Silesia and Pomerania to walk westward away from the advancing Red Army. The death marches resulted in thousands of concentration camp prisoners and Allied POWs dying en route. It is estimated that in March and April 1945, at least 250,000 men and women were marched on foot to the heartland of Germany and Austria. On the 27th of January, troops from Konev's 1st Ukrainian Front liberated the Auschwitz concentration camp. Despite attempts by retreating SS units to destroy parts of the camp, the Soviet forces still found graphic evidence of the Holocaust.

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• 6. Ethnic German Flight And Refugee Crisis

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  In anticipation of the approaching Red Army, the retreating Wehrmacht left parts of the German territory largely abandoned. With widespread unchecked chaos erupting, numerous reports of looting and attacks against ethnic Germans emerged. Nazi propaganda had furthermore demonized the Soviet Army so much that most Germans attempted to run. Millions of ethnic German refugees fled west, seeking relative safety in central or western Germany. They sought refuge even in the custody of the Americans and British west of the Rhine. The flight created a massive humanitarian crisis as civilians moved through the chaos of the Soviet advance. Reports documented the suffering of those who tried to escape the incoming front lines.

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• 7. Strategic Halt And Subsequent Debate

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  On the 31st of January, the Soviet offensive was voluntarily halted though Berlin was undefended and only approximately 60 miles away from the Soviet bridgeheads across the Oder river. Zhukov called a halt owing to continued German resistance on his northern flank. Pomerania remained a threat along the exposed northern flank of the 1st Belorussian Front. A German counter-attack known as Operation Solstice convinced the Soviet command that it was essential to clear German forces from Pomerania before the Berlin offensive could proceed. After the war, a debate raged mainly between Vasily Chuikov and Georgy Zhukov whether it was wise to stop the offensive. Chuikov argued Berlin should have been taken then while Zhukov defended the decision to stop. On the 16th of April, the Red Army jumped off from lines on the Oder and Neisse Rivers, opening the Battle of Berlin.