Operation Blue
Encyclopedia
Case Blue later renamed Operation Braunschweig
Operation Braunschweig
Operation Braunschweig , named for the German city, was the German summer offensive that began on 28 June 1942. The operation was initially named Fall Blau , which is the common name used for the whole offensive. The name was changed from Blau to Braunschweig on 30 June...

, was the German Armed Forces (Wehrmacht
Wehrmacht
The Wehrmacht – from , to defend and , the might/power) were the unified armed forces of Nazi Germany from 1935 to 1945. It consisted of the Heer , the Kriegsmarine and the Luftwaffe .-Origin and use of the term:...

) name for its plan for a 1942 strategic summer offensive in southern Russia between 28 June and November 1942.

A continuation of the previous year's Operation Barbarossa
Operation Barbarossa
Operation Barbarossa was the code name for Germany's invasion of the Soviet Union during World War II that began on 22 June 1941. Over 4.5 million troops of the Axis powers invaded the USSR along a front., the largest invasion in the history of warfare...

 and intended to finally knock the Soviet Union out of the war, the operation involved a two-pronged attack against the rich oilfields of Baku
Baku
Baku , sometimes spelled as Baki or Bakou, is the capital and largest city of Azerbaijan, as well as the largest city on the Caspian Sea and of the Caucasus region. It is located on the southern shore of the Absheron Peninsula, which projects into the Caspian Sea. The city consists of two principal...

 as well as an advance in the direction of Stalingrad along the Volga River
Volga River
The Volga is the largest river in Europe in terms of length, discharge, and watershed. It flows through central Russia, and is widely viewed as the national river of Russia. Out of the twenty largest cities of Russia, eleven, including the capital Moscow, are situated in the Volga's drainage...

, to cover the flanks of the advance towards Baku. For this part of the operation, Army Group South
Army Group South
Army Group South was the name of a number of German Army Groups during World War II.- Poland campaign :Germany used two army groups to invade Poland in 1939: Army Group North and Army Group South...

 (Heeresgruppe Süd) of the German Army (Wehrmacht Heer) was sub-divided into Army Groups A
Army Group A
Army Group A was the name of a number of German Army Groups during World War II.-Western Front, 1940:During the German invasion of the Low Countries and France Army Group A was under the command of General Gerd von Rundstedt, and was responsible for the break-out through the Ardennes...

 and B
Army Group B
Army Group B was the name of three different German Army Groups that saw action during World War II.-Battle for France:The first was involved in the Western Campaign in 1940 in Belgium and the Netherlands which was to be aimed to conquer the Maas bridges after the German airborne actions in Rotterdam...

 (Heeresgruppe A and B). Army Group A was tasked with crossing the Caucasus mountains
Caucasus Mountains
The Caucasus Mountains is a mountain system in Eurasia between the Black Sea and the Caspian Sea in the Caucasus region .The Caucasus Mountains includes:* the Greater Caucasus Mountain Range and* the Lesser Caucasus Mountains....

 to reach the Baku oil fields, while Army Group B protected its flanks along the Volga.

Initially, the German offensive saw spectacular gains with a rapid advance into the Caucasus capturing vast areas of land and several oil fields. However, the Red Army decisively defeated the Germans at Stalingrad
Battle of Stalingrad
The Battle of Stalingrad was a major battle of World War II in which Nazi Germany and its allies fought the Soviet Union for control of the city of Stalingrad in southwestern Russia. The battle took place between 23 August 1942 and 2 February 1943...

, following Operations Uranus
Operation Uranus
Operation Uranus was the codename of the Soviet strategic operation in World War II which led to the encirclement of the German Sixth Army, the Third and Fourth Romanian armies, and portions of the German Fourth Panzer Army. The operation formed part of the ongoing Battle of Stalingrad, and was...

 and Little Saturn. This unprecedented defeat forced the Axis to retreat from the Caucasus in fear of becoming trapped. Only the city of Voronezh
Voronezh
Voronezh is a city in southwestern Russia, the administrative center of Voronezh Oblast. It is located on both sides of the Voronezh River, away from where it flows into the Don. It is an operating center of the Southeastern Railway , as well as the center of the Don Highway...

 and the Kuban
Kuban
Kuban is a geographic region of Southern Russia surrounding the Kuban River, on the Black Sea between the Don Steppe, Volga Delta and the Caucasus...

 region remained tentatively occupied by Axis troops.

Background

On 22 June 1941 the Germans began Operation Barbarossa with the intention of defeating the Soviets in a Blitzkrieg
Blitzkrieg
For other uses of the word, see: Blitzkrieg Blitzkrieg is an anglicized word describing all-motorised force concentration of tanks, infantry, artillery, combat engineers and air power, concentrating overwhelming force at high speed to break through enemy lines, and, once the lines are broken,...

 lasting only months. The offensive met with initial success and the Red Army suffered some major defeats, before the Germans were stopped at Moscow
Battle of Moscow
The Battle of Moscow is the name given by Soviet historians to two periods of strategically significant fighting on a sector of the Eastern Front during World War II. It took place between October 1941 and January 1942. The Soviet defensive effort frustrated Hitler's attack on Moscow, capital of...

. Although the Germans captured vast areas of land and important industrial centers, the Soviet Union remained in the war. In the winter of 1941/1942 the Soviets struck back in a series of counteroffensives, repelling the German threat to Moscow, and making it clear that the war against the Soviets would become a long-term war of attrition. Despite these setbacks, Hitler wanted an offensive solution, for which he required the rich oil resources of the Caucasus. By February 1942, the Army High Command (OKH) had begun to develop plans for a follow-up campaign to the failed Barbarossa offensive with the Caucasus
Caucasus
The Caucasus, also Caucas or Caucasia , is a geopolitical region at the border of Europe and Asia, and situated between the Black and the Caspian sea...

 as its principal objective. On 5 April 1942, Hitler laid out the key elements of the plan now known as "Case Blue" (Fall Blau) in Führer Directive No. 41.

The oilfields

The immense Caucasus region, traversed by its eponymous mountains, is bounded by the Black Sea
Black Sea
The Black Sea is bounded by Europe, Anatolia and the Caucasus and is ultimately connected to the Atlantic Ocean via the Mediterranean and the Aegean seas and various straits. The Bosphorus strait connects it to the Sea of Marmara, and the strait of the Dardanelles connects that sea to the Aegean...

 to the west and the Caspian Sea
Caspian Sea
The Caspian Sea is the largest enclosed body of water on Earth by area, variously classed as the world's largest lake or a full-fledged sea. The sea has a surface area of and a volume of...

 to the east. The region north of the mountains was a production center for grain
GRAIN
GRAIN is a small international non-profit organisation that works to support small farmers and social movements in their struggles for community-controlled and biodiversity-based food systems. Our support takes the form of independent research and analysis, networking at local, regional and...

, cotton
Cotton
Cotton is a soft, fluffy staple fiber that grows in a boll, or protective capsule, around the seeds of cotton plants of the genus Gossypium. The fiber is almost pure cellulose. The botanical purpose of cotton fiber is to aid in seed dispersal....

 and heavy farm machinery while its two main oilfields, at Maykop
Maykop
Maykop is the capital city of the Republic of Adygea, Russia, located on the right bank of the Belaya River . Population: -History:...

, near the Black Sea, and Grozny
Grozny
Grozny is the capital city of the Chechen Republic, Russia. The city lies on the Sunzha River. According to the preliminary results of the 2010 Census, the city had a population of 271,596; up from 210,720 recorded in the 2002 Census. but still only about two-thirds of 399,688 recorded in the 1989...

, adjoining the Caspian, produced about 10 per cent of all Soviet oil. South of the mountains lay the densely populated region of Transcaucasia, comprising Georgia
Georgia (country)
Georgia is a sovereign state in the Caucasus region of Eurasia. Located at the crossroads of Western Asia and Eastern Europe, it is bounded to the west by the Black Sea, to the north by Russia, to the southwest by Turkey, to the south by Armenia, and to the southeast by Azerbaijan. The capital of...

, Azerbaijan
Azerbaijan
Azerbaijan , officially the Republic of Azerbaijan is the largest country in the Caucasus region of Eurasia. Located at the crossroads of Western Asia and Eastern Europe, it is bounded by the Caspian Sea to the east, Russia to the north, Georgia to the northwest, Armenia to the west, and Iran to...

 and Armenia
Armenia
Armenia , officially the Republic of Armenia , is a landlocked mountainous country in the Caucasus region of Eurasia...

. This heavily industrialised area, which had a greater population density than New York State, contained some of the largest oilfields in the world. Baku, the capital of Azerbaijan, was one of the richest, producing 80 per cent of the Soviet Union
Soviet Union
The Soviet Union , officially the Union of Soviet Socialist Republics , was a constitutionally socialist state that existed in Eurasia between 1922 and 1991....

's oil – about 24 million tons in 1942 alone.

The Caucasus also possessed plentiful coal
Coal
Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers or veins called coal beds or coal seams. The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure...

 and peat
Peat
Peat is an accumulation of partially decayed vegetation matter or histosol. Peat forms in wetland bogs, moors, muskegs, pocosins, mires, and peat swamp forests. Peat is harvested as an important source of fuel in certain parts of the world...

, as well as nonferrous and rare metals. Manganese
Manganese
Manganese is a chemical element, designated by the symbol Mn. It has the atomic number 25. It is found as a free element in nature , and in many minerals...

 deposits at Chiaturi, in Transcaucasia formed the richest single source in the world, yielding 1.5 million tons of manganese ore annually, half of the Soviet Union's total production. The Kuban region of the Caucasus also contained vast swaths of wheat
Wheat
Wheat is a cereal grain, originally from the Levant region of the Near East, but now cultivated worldwide. In 2007 world production of wheat was 607 million tons, making it the third most-produced cereal after maize and rice...

, corn
Maize
Maize known in many English-speaking countries as corn or mielie/mealie, is a grain domesticated by indigenous peoples in Mesoamerica in prehistoric times. The leafy stalk produces ears which contain seeds called kernels. Though technically a grain, maize kernels are used in cooking as a vegetable...

, sunflower
Sunflower
Sunflower is an annual plant native to the Americas. It possesses a large inflorescence . The sunflower got its name from its huge, fiery blooms, whose shape and image is often used to depict the sun. The sunflower has a rough, hairy stem, broad, coarsely toothed, rough leaves and circular heads...

 seeds and sugar beets, all essential in the production of food.

These resources were of immense importance to Hitler and the German war effort. Of the three million tons of oil Germany consumed per year, 85 per cent was imported - mainly from the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

, Venezuela
Venezuela
Venezuela , officially called the Bolivarian Republic of Venezuela , is a tropical country on the northern coast of South America. It borders Colombia to the west, Guyana to the east, and Brazil to the south...

 and Iran
Iran
Iran , officially the Islamic Republic of Iran , is a country in Southern and Western Asia. The name "Iran" has been in use natively since the Sassanian era and came into use internationally in 1935, before which the country was known to the Western world as Persia...

. When war broke out in September 1939, the British naval blockade cut Germany off from the Americas
Americas
The Americas, or America , are lands in the Western hemisphere, also known as the New World. In English, the plural form the Americas is often used to refer to the landmasses of North America and South America with their associated islands and regions, while the singular form America is primarily...

 and the Middle East leaving the country reliant on oil-rich European countries such as Romania to supply the resource. An indication of German reliance on Romania is evident from its oil consumption; in 1938, just one-third of the 7,500,000 tons consumed by Germany came from domestic stocks. Oil had always been Germany's Achilles heel, and by the end of 1941, Hitler had nearly exhausted Germany's reserves, which left him with only two significant sources of oil, the country's own synthetic production and the Romanian oilfields, with the latter supplying 75% of Germany's oil imports in 1941. Aware of his declining oil resources and fearful of enemy air attacks on Romania—Germany's only source of crude oil—Hitler's strategy was increasingly driven by the need to protect Romania and acquire new resources, essential if he wanted to continue waging a prolonged war against a growing list of enemies. In late 1941, the Romanians warned Hitler that their stocks were exhausted and they were unable to meet German demands. For these reasons, the Soviet oilfields were extremely important to Germany's industry and armed forces as the war became global, the power of the Allies grew, and shortages started to occur in Axis resources.

Axis forces

The offensive was to be conducted across the southern Russian (Kuban) steppe
Kuban
Kuban is a geographic region of Southern Russia surrounding the Kuban River, on the Black Sea between the Don Steppe, Volga Delta and the Caucasus...

 utilizing the following Army Group units:
  • Army Group A, under Wilhelm List (Caucasus campaign)
    • First Panzer Army
    • Seventeenth Army
      17th Army (Germany)
      The German Seventeenth Army was a World War II field army.-Commanding officers:* General der Infanterie Carl-Heinrich von Stülpnagel * Generaloberst Hermann Hoth...

    • Third Romanian Army
    • Eleventh Army
      11th Army (Germany)
      The 11th Army was a World War I and a World War II field army.-World War I:The 11th Army was formed in early 1915. It briefly fought on the Western Front during the Battle of Ypres, holding the line against the allied attack...


  • Army Group B, under Maximilian von Weichs
    Maximilian von Weichs
    Maximilian Maria Joseph Karl Gabriel Lamoral Reichsfreiherr von Weichs zu Glon was a German Generalfeldmarschall during World War II. He was also a recipient of the Knight's Cross of the Iron Cross with Oak Leaves...

     (Volga campaign)
    • Second Army
    • Fourth Panzer Army
    • Sixth Army
    • Second Hungarian Army
      Hungarian Second Army
      The Hungarian Second Army was one of three field armies raised by the Kingdom of Hungary which saw action during World War II. All three armies were formed on March 1, 1940...

    • Fourth Romanian Army
      Fourth Army (Romania)
      The Fourth Army was a field army of the Romanian Land Forces active from the 19th century to the 1990s.-History:The Fourth Army fought in the Romanian Campaign of World War I, under the command of General Prezan...

    • Eighth Italian Army
      Italian Army in Russia
      The Italian Army in Russia was an army-sized unit of the Italian Royal Army which fought on the Eastern Front during World War II...


  • Luftflotte 4
    Luftflotte 4
    Luftflotte 4 was one of the primary divisions of the German Luftwaffe in World War II. It was formed on March 18, 1939 from Luftwaffenkommando Österreich in Vienna. The Luftflotte was redesignated on April 21, 1945 to Luftwaffenkommando 4, and became subordinated to Luftflotte 6. It was the...

    , under Alexander Löhr
    Alexander Löhr
    Alexander Löhr was an Austrian Air Force commander during the 1930s and, after the "Political Union of Germany and Austria" , he was a German Air Force commander...

    • Fliegerkorps VIII
      8th Air Corps (Germany)
      VIII. FliegerkorpsFor more details see Luftwaffe Organization was formed 19 July 1939 in Oppeln as Fliegerführer z.b.V. The abbreviation z.b.V. is German and stands for zur besonderen Verwendung . Fliegerführer z.b.V was renamed to VIII. Fliegerkorps on 10 November 1939...

    • Fliegerkorps IV
      4th Air Corps (Germany)
      IV. FliegerkorpsFor more details see Luftwaffe Organization was formed 11 October 1939 in Düsseldorf from the 4. Flieger-Division...



German air strength in the east numbered 2,644 aircraft on 20 June 1942, over 20% more than a month earlier. Whereas in 1941 most units fought on the central front supporting Army Group Centre
Army Group Centre
Army Group Centre was the name of two distinct German strategic army groups that fought on the Eastern Front in World War II. The first Army Group Centre was created on 22 June 1941, as one of three German Army formations assigned to the invasion of the Soviet Union...

, 1,610 aircraft (61%), supported Army Group South. Initially commanded by Löhr, on 20 July 1942, Wolfram Freiherr von Richthofen took command of Luftflotte 4.

The German plan involved a three-staged attack:
  • Blau I: Fourth Panzer Army, commanded by Hermann Hoth
    Hermann Hoth
    Hermann "Papa" Hoth was an officer in the German military from 1903 to 1945. He attained the rank of Generaloberst during World War II. He fought in France, but is most noted for his later exploits as a panzer commander on the Eastern Front...

     (transferred from Army Group North
    Army Group North
    Army Group North was a German strategic echelon formation commanding a grouping of Field Armies subordinated to the OKH during World War II. The army group coordinated the operations of attached separate army corps, reserve formations, rear services and logistics.- Formation :The Army Group North...

    ) and the Second Army, supported by the Second Hungarian Army, would attack from Kursk
    Kursk
    Kursk is a city and the administrative center of Kursk Oblast, Russia, located at the confluence of the Kur, Tuskar, and Seym Rivers. The area around Kursk was site of a turning point in the Russian-German struggle during World War II and the site of the largest tank battle in history...

     to Voronezh
    Voronezh
    Voronezh is a city in southwestern Russia, the administrative center of Voronezh Oblast. It is located on both sides of the Voronezh River, away from where it flows into the Don. It is an operating center of the Southeastern Railway , as well as the center of the Don Highway...

     and continue the advance, anchoring the northern flank of the offensive towards the Volga.
  • Blau II: Sixth Army, commanded by Friedrich Paulus
    Friedrich Paulus
    Friedrich Wilhelm Ernst Paulus was an officer in the German military from 1910 to 1945. He attained the rank of Generalfeldmarschall during World War II, and is best known for having commanded the Sixth Army's assault on Stalingrad during Operation Blue in 1942...

    , would attack from Kharkov and move in parallel with Fourth Panzer Army, to reach the Volga at Stalingrad (whose capture was not deemed necessary).
  • Blau III: First Panzer Army would then strike south towards the lower Don River
    Don River (Russia)
    The Don River is one of the major rivers of Russia. It rises in the town of Novomoskovsk 60 kilometres southeast from Tula, southeast of Moscow, and flows for a distance of about 1,950 kilometres to the Sea of Azov....

    , with Seventeenth Army on the western flank and Fourth Romanian Army on the eastern flank.


The strategic objectives of the operation were the oilfields at Maykop, Grozny and Baku. As in Barbarossa, these movements were expected to result in a series of grand encirclements of Soviet troops.

Soviet forces

The Soviet army command (Stavka
Stavka
Stavka was the term used to refer to a command element of the armed forces from the time of the Kievan Rus′, more formally during the history of Imperial Russia as administrative staff and General Headquarters during late 19th Century Imperial Russian armed forces and those of the Soviet Union...

) failed to discern the direction of the main German strategic offensive anticipated in 1942, even though they were in possession of the German plans. On 19 June, the chief of operations of the 23rd Panzer Division, Major Joachim Reichel, was shot down over Soviet-held territory while flying an observation aircraft over the front near Kharkov. The Soviets recovered maps from his aircraft detailing the exact German plans for Case Blue. The plans were handed over to Stavka, in Moscow.

Joseph Stalin
Joseph Stalin
Joseph Vissarionovich Stalin was the Premier of the Soviet Union from 6 May 1941 to 5 March 1953. He was among the Bolshevik revolutionaries who brought about the October Revolution and had held the position of first General Secretary of the Communist Party of the Soviet Union's Central Committee...

, however, believed it to be a German ruse, remaining convinced that the primary German strategic goal in 1942 would be Moscow, in part due to Operation Kremlin
Operation Kremlin
Operation Kremlin was a successful German deception operation against Soviet forces in May-June 1942.After German troops captured the city of Kharkov in October 1941, the German High Command planned an offensive to destroy the Soviet forces toward the southern sector of the Eastern Front...

 (Fall Kreml), a German deception plan aimed at the city. As a result, the majority of Red Army troops were deployed there, although the direction from which the Case Blue offensive would come was still defended by the Bryansk
Bryansk Front
The Bryansk Front was a Front of the Soviet Army during the Second World War.General Andrei Yeremenko was designated commander of the Front when it first formed in mid-late August 1941, comprising, in Erickson's words, 'on paper two armies, 50th and 13th, with eight rifle divisions each, three...

, Southwestern, Southern and North Caucasian Front
North Caucasian Front
The North Caucasian Front or North Caucasus Front was a Front of the Soviet Army during the Second World War. This sense of the term is not identical with the more general usage of military front which indicates a geographic area in wartime, although a Soviet Front may operate within designated...

s. With about 1 million soldiers at the frontline and another 1.7 million in reserve armies, their forces accounted for about one quarter of all Soviet troops. Following the disastrous start of Case Blue for the Soviets, they reorganised their frontlines several times. Over the course of the campaign, the Soviets also fielded the Voronezh Front
Voronezh Front
The Voronezh Front was a front of the Soviet Union's Red Army during the Second World War. The name indicated the primary geographical region in which the Front first fought, based on the town of Voronezh on the Don River....

, Don Front
Don Front
The Don Front was a front of the Soviet Union's Red Army during the Second World War. The name refers to Don River, Russia....

, Stalingrad Front
Stalingrad Front
The Stalingrad Front was a front of the Soviet Union's Red Army during the Second World War. The name indicated the primary geographical region in which the Front first fought, based on the city of Stalingrad on the Volga River....

, Transcaucasian Front
Transcaucasian Front
Transcaucasian Front or Transcaucasus Front was a Front of the Soviet Army during the Second World War. This sense of the term is not identical with the more general usage of military front which indicates a geographic area in wartime, although a Soviet Front may operate within designated...

, and the Caucasian Front, though not all existed at the same time.

With the German thrust expected in the north, Stavka planned several local offensives in the south to weaken the Germans. The most important of these was aimed at the city of Kharkov and would be conducted mainly by the Southwestern Front under Semyon Timoshenko
Semyon Timoshenko
Semyon Konstantinovich Timoshenko was a Soviet military commander and senior professional officer of the Red Army at the beginning of the German invasion of the Soviet Union in 1941.-Early life:...

, supported by the Southern Front commanded by Rodion Malinovsky
Rodion Malinovsky
Rodion Yakovlevich Malinovsky was a Soviet military commander in World War II and Defense Minister of the Soviet Union in the late 1950s and 1960s. He contributed to the major defeat of Nazi Germany at the Battle of Stalingrad and the Battle of Budapest...

. The operation was scheduled for 12 May, just prior to a planned German offensive in the area, which would prove disastrous for the operation. The ensuing Second Battle of Kharkov
Second Battle of Kharkov
The Second Battle of Kharkov, so named by Wilhelm Keitel, was an Axis counter-offensive against the Red Army Izium bridgehead offensive conducted from 12 May to 28 May 1942, on the Eastern Front during World War II. Its objective was to eliminate the Izium bridgehead over Seversky Donets, or the...

 ended in disaster and severely weakened the Soviets. At the same time, the Axis clearing of the Kerch Peninsula
Battle of the Kerch Peninsula
Battle of the Kerch Peninsula was a World War II offensive by German and Romanian armies against the Soviet Crimean Front forces defending the Kerch Peninsula, in the eastern part of the Crimea. It was launched on 8 May 1942 and concluded around 18 May 1942 with the near complete destruction of...

 together with the Battle of Sevastopol
Battle of Sevastopol
The Siege of Sevastopol took place on the Eastern Front of the Second World War. The campaign was fought by the Axis powers of Germany, Romania and Italy against the Soviet Union for control of Sevastopol, a port in Crimea on the Black Sea. On 22 June 1941 the Axis invaded the Soviet Union under...

, which lasted until July, weakened the Soviets further and allowed the Germans to supply Army Group A across the Kerch Peninsula
Kerch Peninsula
The Kerch Peninsula is a major and prominent geographic feature located at the eastern portion of Crimea. Stretching towards the Taman peninsula, it is reminiscent of an isthmus between two neighboring seas: Azov Sea and Black Sea...

 through the Kuban.

Opening phase

The German offensive commenced on 28 June 1942, with Fourth Panzer Army starting its drive towards Voronezh. Due to a chaotic Soviet retreat, the Germans were able to advance rapidly, restoring Wehrmacht's confidence for the upcoming major offensive.

Close air support
Close air support
In military tactics, close air support is defined as air action by fixed or rotary winged aircraft against hostile targets that are close to friendly forces, and which requires detailed integration of each air mission with fire and movement of these forces.The determining factor for CAS is...

 from the Luftwaffe also played an important role in this early success. It contained the Red Air Force, through air superiority operations, and interdiction through attacks on airfields and Soviet defence lines. At times the German air arm acted as a spearhead rather than a support force, ranging on ahead of the tanks and infantry to disrupt and destroy defensive positions. As many as 100 German aircraft were concentrated on a single Soviet division in the path of the spearhead during this phase. General Kazakov, the Bryansk Front
Bryansk Front
The Bryansk Front was a Front of the Soviet Army during the Second World War.General Andrei Yeremenko was designated commander of the Front when it first formed in mid-late August 1941, comprising, in Erickson's words, 'on paper two armies, 50th and 13th, with eight rifle divisions each, three...

's chief of staff, noted the strength and effectiveness of Axis aviation. Within 26 days, the Soviets lost 783 aircraft from the 2nd
2nd Air Army
The 2nd Air Army was a formation of the Aviation of the Red Army as part of the Soviet Armed Forces during the Second World War...

, 4th
4th Air Army
The 4th Air Army was a Soviet Air Force formation and from 1992 to 2009 was part of the Russian Air Force. From 1998 the army was designated the 4th Army of Air Forces and Air Defence. It was first established on 22 May 1942 from the Air Forces of the Soviet Southern Front, and fought on the...

, 5th
5th Air Army
The 5th Air Army was the Russian Air Force's smallest Air Army, with the headquarters located in Yekaterinburg, its zone of responsibility being the Volga-Ural Military District, on the border between Europe and Asia...

 and 8th Air Armies, compared to a German total of 175.

By 5 July, forward elements of Fourth Panzer Army had reached the Don River
Don River (Russia)
The Don River is one of the major rivers of Russia. It rises in the town of Novomoskovsk 60 kilometres southeast from Tula, southeast of Moscow, and flows for a distance of about 1,950 kilometres to the Sea of Azov....

 near Voronezh and became embroiled in the battle to capture the city
Battle of Voronezh (1942)
The Battle of Voronezh was a battle on the Eastern Front of World War II, fought in and around the strategically important city of Voronezh on the Don river, south of Moscow, from 28 June-24 July 1942, as opening move of the German summer offensive in 1942....

. Stalin and the Soviet command still expected the main German thrust in the north against Moscow, and believed the Germans would turn north after Voronezh to threaten the capital. As a result, the Soviets rushed reinforcements into the town, to hold it at all costs and counterattacked the Germans' northern flank in an effort to cutoff the German spearheads. Pavel Rotmistrov
Pavel Rotmistrov
Chief Marshal of Armoured Troops Pavel Alexeyevich Rotmistrov was a commander of armoured troops in the Red Army during and following World War II.-Pre-War:...

's Fifth Tank Army
5th Guards Tank Army (Soviet Union)
The 5th Guards Tank Army was a Soviet Guards armoured formation which fought in many notable actions during World War II.The 5th Guards Tank Army was formed on 10 February 1942. Its organisation varied throughout its history, but in general included two or more Guards Tank Corps and one or more...

 managed to achieve some minor successes when it began its attack on 6 July, but was forced back to its starting positions by 15 July, losing about half of its tanks in the process. Although the battle was a success, Hitler and von Bock
Fedor von Bock
Fedor von Bock was a German Generalfeldmarshall who served in the Wehrmacht during the Second World War. As a leader who lectured his soldiers about the honor of dying for the German Fatherland, he was nicknamed "Der Sterber"...

, commander of Army Group South, argued over the next steps in the operation. The heated debate, and continuing Soviet counterattacks, which tied down Fourth Panzer Army until 13 July, caused Hitler to lose his temper and dismiss von Bock. As part of the second phase of the operation, on 9 July, Army Group South was split into Army Group A and B with Wilhelm List appointed as commander of Army Group A in place of von Bock.

Only two weeks into the operation, on 11 July, the Germans began to suffer logistics
Military logistics
Military logistics is the discipline of planning and carrying out the movement and maintenance of military forces. In its most comprehensive sense, it is those aspects or military operations that deal with:...

 difficulties, which slowed down the tempo of the advance. The German Sixth Army was continually delayed by fuel shortages. Eight days later, on 20 July, shortages of fuel were still undermining operations, leaving many units unable to execute their orders. The 23rd Panzer Division and 24th Panzer Division both became stranded during the opening phase. Once again, as it had done during the Norwegian Campaign
Norwegian Campaign
The Norwegian Campaign was a military campaign that was fought in Norway during the Second World War between the Allies and Germany, after the latter's invasion of the country. In April 1940, the United Kingdom and France came to Norway's aid with an expeditionary force...

 in April 1940, and Barbarossa in 1941, the Luftwaffe's Junkers Ju 52
Junkers Ju 52
The Junkers Ju 52 was a German transport aircraft manufactured from 1932 to 1945. It saw both civilian and military service during the 1930s and 1940s. In a civilian role, it flew with over 12 air carriers including Swissair and Deutsche Luft Hansa as an airliner and freight hauler...

 transport fleet flew in supplies to keep the army going. The situation remained difficult with German troops forced to recover fuel from damaged or abandoned vehicles, and in some cases, leave behind tanks and vehicles with heavy fuel consumption to continue their advance. This undermined the strength of the units, which were forced to leave fighting vehicles behind. Nevertheless, the Luftwaffe flew in 200 tons of fuel per day to keep the army supplied. Despite this impressive performance in keeping the army mobile, Löhr was replaced by the more impetuous and offensive-minded von Richthofen.

Splitting of Army Group South

Believing that the main Russian threat had been eliminated, desperately short of oil and needing to meet all the ambitious objectives of Case Blue, Hitler made a series of changes to the plan in Führer Directive No. 45:
  • reorganized Army Group South into two smaller Army Groups, A and B;
  • tasked Army Group A with advancing to the Caucasus and capturing the oil fields (Operation Edelweiß);
  • tasked Army Group B with the offensive towards the Volga and Stalingrad (Operation Fischreiher
    Operation Fischreiher
    Operation Fischreiher was an extension to Operation Blue II during the German invasion of the Soviet Union in World War II...

    ).


There is no evidence Hitler was opposed by, or received complaints from Franz Halder
Franz Halder
Franz Halder was a German General and the head of the Army General Staff from 1938 until September, 1942, when he was dismissed after frequent disagreements with Adolf Hitler.-Early life:...

, the Chief of the General Staff, or anyone else, about the directive until August 1942. The new directive created enormous logistical difficulties with Hitler expecting both Army Groups to advance along different logistics routes. Logistics lines were already at breaking point with ammunition and fuel shortages most apparent, and it would be impossible to advance using the present conservative supply rates he demanded. The divergence of the two Army Groups would also open a dangerous gap between the armies, which could be exploited by the enemy. Moreover, no effective deployment of tactical resources was made in light of the task at hand. Inexplicably the Italian Alpine Corps
Alpini
The Alpini, , are the elite mountain warfare soldiers of the Italian Army. They are currently organized in two operational brigades, which are subordinated to the Alpini Corps Command. The singular is Alpino ....

, of the Italian Army in Russia
Italian Army in Russia
The Italian Army in Russia was an army-sized unit of the Italian Royal Army which fought on the Eastern Front during World War II...

, did not arrive in the Caucasus Mountains with Army Group A, instead remaining with Paulus' Sixth Army. Army Group A was therefore expected to operate in mountain terrain with only three mountain divisions and two infantry divisions unsuited to the task.

The splitting of Army Group South enabled the launching of Operation Edelweiss and Operation Fischreiher, the two main thrusts of the army groups. Both groups now had to strive for their goals simultaneously, instead of achieving them consecutively on a phased basis. The success of Sixth Army's initial advance was such that Hitler ordered Fourth Panzer Army south to assist First Panzer Army in forcing a crossing of the lower Don River.

Breaking into the Caucasus

With heavy air support from the Ju 87s of Sturzkampfgeschwader 77
Sturzkampfgeschwader 77
Sturzkampfgeschwader 77 was a Luftwaffe Dive bomber-wing of World War II.-History:Sturzkampfgeschwader 77 was formed on 1 May 1939, I. Group in Brieg, Stab and II. Group in Breslau-Schöngarten . The III. Group was formed from II...

, List's Army Group A recaptured Rostov, the "gate to the Caucasus", on 23 July 1942 without much resistance. The Luftwaffe was in complete control of the skies in the early phase of the operation thus easing the task of the ground forces. With the Don River crossing secured and Sixth Army's advance flagging on the Volga front, Hitler sent the Fourth Panzer Army back to the Volga line, reassigning it to Army Group B. In doing so, the Germans wasted enormous amounts of precious fuel transferring the units by air and land to the Volga front.

After crossing the Don River on 25 July, Army Group A fanned out on a 200 km (124.3 mi) broad front from the Sea of Azov
Sea of Azov
The Sea of Azov , known in Classical Antiquity as Lake Maeotis, is a sea on the south of Eastern Europe. It is linked by the narrow Strait of Kerch to the Black Sea to the south and is bounded on the north by Ukraine mainland, on the east by Russia, and on the west by the Ukraine's Crimean...

 to Zymlianskaya. The German Seventeenth Army, along with elements of the Eleventh Army and the support of the Romanian Third Army, now manoeuvred west towards the Black Sea's eastern coast, while First Panzer Army attacked southeast. While Seventeenth Army could only advance steadily, First Panzer Army roamed at will through the Soviet lines. On 29 July the Germans cut the last direct railroad between central Russia and the Caucasus region, causing considerable panic among the Soviet High Command and Stalin, which was illustrated by the passing of the famous Order No. 227 - "Not a step back!". Salsk
Salsk
Salsk is a town and the administrative center of Salsky District of Rostov Oblast, Russia, located on the Sredny Yegorlyk River , southeast of Rostov-on-Don. Population:...

 was captured on 31 July and Stavropol
Stavropol
-International relations:-Twin towns/sister cities:Stavropol is twinned with: Des Moines, United States Béziers, France Pazardzhik, Bulgaria-External links:* **...

 on 5 August. Although the Army Group made rapid ground during its advance, by 3 August its vanguard comprised only light mobile forces with most of the tanks lagging behind due to lack of fuel and logistical breakdowns. Despite the best efforts of Kurt Pflugbeil
Kurt Pflugbeil
Kurt Pflugbeil was a highly decorated General der Flieger in the Wehrmacht during World War II, and one of only 882 recipients of the Knight's Cross of the Iron Cross with Oak Leaves...

's Fliegerkorps IV, which flew in supplies around the clock, the problem did not abate.

On 9 August, First Panzer Army reached the foothills of the Caucasus
Caucasus
The Caucasus, also Caucas or Caucasia , is a geopolitical region at the border of Europe and Asia, and situated between the Black and the Caspian sea...

 range, having advanced more than 480 kilometres (298.3 mi) in less than two weeks. The oil fields at Maykop were seized in a commando operation on 8–9 August and shortly afterwards Pyatigorsk
Pyatigorsk
Pyatigorsk is a city in Stavropol Krai on the Podkumok River, about from Mineralnye Vody. Since January 19, 2010 it has been the administrative center of the North Caucasian Federal District of Russia...

 was taken. On 12 August, Krasnodar
Krasnodar
Krasnodar is a city in Southern Russia, located on the Kuban River about northeast of the Black Sea port of Novorossiysk. It is the administrative center of Krasnodar Krai . Population: -Name:...

 was captured and German mountain troops hoisted the Nazi flag on the highest mountain of the Caucasus, Mount Elbrus
Mount Elbrus
Mount Elbrus is an inactive volcano located in the western Caucasus mountain range, in Kabardino-Balkaria and Karachay-Cherkessia, Russia, near the border of Georgia. Mt. Elbrus's peak is the highest in the Caucasus, in Russia...

.

The German advance proved highly successful, but with the Soviets often retreating instead of fighting, the number of captured Soviet troops fell short of expectations — only 83,000 in all. At the same time, the focus of the German command shifted to the struggle at Stalingrad, which received a greater number of replacements and supplies. Faced with these difficulties, the Axis advance slowed from 28 August onwards.

Battle for the oilfields

Meanwhile in the southeast, the Wehrmacht headed in the direction of Grozny and Baku, the other important petroleum centres. More installations and industrial centres fell into German hands, many intact or only slightly damaged during the Russian retreat from the area. In August–September the Taman Peninsula
Taman peninsula
The Taman Peninsula is a peninsula in the present-day Krasnodar Krai of Russia. It is bounded on the north by the Sea of Azov, on the west by the Strait of Kerch and on the south by the Black Sea. The peninsula has evolved over the past two millennia from a chain of islands into the peninsula it is...

 and a part of the Novorossisk naval base were taken. Thereafter, the Germans continued their advance toward Tuapse
Tuapse
Tuapse is a town in Krasnodar Krai, Russia, situated on the northeast shore of the Black Sea, south of Gelendzhik and north of Sochi. It serves as the administrative center of Tuapsinsky District, although administratively it is separate from it...

 along the Black Sea coast. In the east, Elista
Elista
-Twin towns/sister cities:Elista is twinned with the following sister cities. Howell, New Jersey, United States Lhasa, Tibet, China. Ulan-Ude, Buryat Republic, Russia-See also:*Geden Sheddup Choikorling Monastery*Burkhan Bakshin Altan Sume-External links:...

 was taken on 13 August. Further south, the German advance stalled north of Grozny, after taking the town of Mozdok on 25 August. German paratroopers assisted a raging insurgency in Chechnya, operating behind the Soviet lines. However, the Mountain troops failed to secure the Black Sea ports, and the advance fell short of Grozny as logistical issues arose once more. The Soviets, determined to defend the oil fields there, dug in the 9th and 44th Armies of the North Transcaucasian Front along the rocky Terek River bank in front (north) of the city. The Luftwaffe was unable to support the German land forces that deep within enemy territory, allowing Soviet aviation to attack Axis-held bridges and logistics concerns virtually unopposed. The Germans crossed the river on 2 September, but progress was extremely slow.

In an attempt to improve the logistics situation, Axis naval vessels transported 30,605 men, 13,254 horses, and 6,265 motor vehicles across the Black Sea to the Caucasus from Romanian ports, between 1–2 September. Thus reinforced, the Germans captured most of the Black Sea naval bases, but stalled at Novorossiisk, where the Soviet 47th Army dug in and prepared for a long siege. Novorossisk fell on 10 September 1942, after a bitter four-day battle. This was List's final victory in the Caucasus, and an incomplete one – the Soviet 47th Army still held the heights south of the port, and several strategically important coastal roads. Several attempts to push out of Novorossisk were repulsed with heavy losses. The Axis also proved unable to overcome coastal plain defences between Novorossiisk and Tuapse, and had only the strength to stabilise the line. Romanian Army losses were particularly high with the Romanian 3rd Mountain Division nearly wiped out by a Soviet counter-attack on 25–26 September.

Meanwhile, further east, the Axis enjoyed greater success. On 1 September, the Germans took , halfway between Elista and Astrakhan
Astrakhan
Astrakhan is a major city in southern European Russia and the administrative center of Astrakhan Oblast. The city lies on the left bank of the Volga River, close to where it discharges into the Caspian Sea at an altitude of below the sea level. Population:...

. During August and September, German patrols harassed and interrupted the railway between Kizlyar
Kizlyar
Kizlyar is a town in the Republic of Dagestan, Russia, located in the delta of the Terek River northwest of Makhachkala. Population: 30,000 ....

, northeast of Grozny, and Astrakhan, marking the farthest advance of the German forces towards the Caspian Sea. In the south, the First Panzer Army's advance on Grozny stalled after meeting heavy resistance on the ground from Soviet forces supported by the 14th Air Army
14th Air Army
The 14th Air Army of the Russian Air Force, was first formed in World War II as part of the Soviet Air Force. It was disbanded in 2009....

, which blunted their attacks. By late September and into early October, logistics breakdowns and heavy resistance meant the Axis were barely moving.

Local attacks still proved successful. On 26 or 28 October 1942, the 2nd Romanian Mountain Division and 13th Panzer Division took Nalchik
Nalchik
Nalchik is the capital city of the Kabardino-Balkar Republic, Russia, situated at an altitude of in the foothills of the Caucasus Mountains; about northwest of Beslan in the Republic of North Ossetia–Alania. It covers an area of...

, capital of Kabardino-Balkaria
Kabardino-Balkaria
The Kabardino-Balkar Republic , or Kabardino-Balkaria , is a federal subject of Russia located in the North Caucasus. Population: -Geography:The republic is situated in the North Caucasus mountains, with plains in the northern part....

, then captured 10,000 Soviets in two days, before the Axis advance toward Grozny stalled again west of the city at the town of Vladikavkaz
Vladikavkaz
-Notable structures:In Vladikavkaz, there is a guyed TV mast, tall, built in 1961, which has six crossbars with gangways in two levels running from the mast structure to the guys.-Twin towns/sister cities:...

. On 5 November, Alagir
Alagir
Alagir is an industrial town and the administrative center of Alagirsky District of the Republic of North Ossetia–Alania, Russia, situated on the west bank of the Ardon River, west of the republic's capital Vladikavkaz...

 was seized and the Alagir
Alagir
Alagir is an industrial town and the administrative center of Alagirsky District of the Republic of North Ossetia–Alania, Russia, situated on the west bank of the Ardon River, west of the republic's capital Vladikavkaz...

-Beslan
Beslan
Beslan is a town and the administrative center of Pravoberezhny District of the Republic of North Ossetia–Alania, Russia. In terms of population, Beslan is the third largest town in the republic behind Vladikavkaz and Mozdok...

-Malgobek
Malgobek
Malgobek is a town in the Republic of Ingushetia, Russia, located northwest of the republic's capital Magas. Population: Malgobek was founded in 1935 as a settlement for workers at then recently discovered oilfields, on the territory of former Ingush villages of Malgobek-Balka and Chechen-Balka...

 line would then mark the farthest German advance in the south. By this time, the gap between Army Group A and B had dangerously exposed them to a counter strike. Only the German 16th Motorized Infantry Division remained inside the gap, defending the left flank of the First Panzer Army by securing the road towards Astrakhan.

In November, after several unsuccessful Soviet counterattacks, the Germans decided to remain on the defensive, waiting for the spring of 1943 to resume the offensive if the Stalingrad operations proved successful.

Luftwaffe offensive against the oil fields

In the first week of October 1942, Hitler came to recognise that the capture of the Caucasus oil fields was unlikely before the Russian Winter
Russian Winter
The Russian Winter is a common explanation for military failures of invaders in Russia. Common nicknames are General Frost, General Winter and General Snow. Another was "General Mud"....

 forced the German forces to take up winter positions. Unable to capture them, he was determined to deny them to the enemy and ordered the Oberkommando der Luftwaffe
Oberkommando der Luftwaffe
The Oberkommando der Luftwaffe was the air force High Command of the Third Reich.Air Force Commanders-in-Chief* Reich Marshal Hermann Göring * Field Marshal Robert Ritter von Greim -History:...

(OKL) to inflict as much damage as possible.

On 8 October, Hitler called for the air offensive to be carried out no later than the 14 October, as he required air assets for a major effort at Stalingrad. As a result, on 10 October 1942, Luftflotte 4 s Fliegerkorps IV was ordered to send every available bomber against the oilfields at Grozny. The air fleet was in poor shape by this time – Von Richthofen had begun Case Blue with 323 serviceable bombers out of a total of 480. He was now down to 232, of which only 129 were combat ready. Nevertheless, the force could still deliver damaging blows. Attacks on the refineries reminded von Richthofen of the attacks on Sevastopol several months earlier. Thick black smoke rose from the refineries to a height 5500 metres (18,044.6 ft). On 12 October further raids caused even more destruction. It had been a strategic mistake not to have made greater efforts to hit the oil refineries at Grozny and Baku sooner as their destruction would have been a greater blow to the Soviets than the loss of Stalingrad, where most of the air fleet was deployed. On 19 November, the Soviet counter-offensive at Stalingrad compelled von Richthofen to once more withdraw his units north to the Volga and bring an end to the aerial offensive.

Much damage was done at Grozny, but the remaining oilfields were beyond the logistical reach of the German Army as well as the fighter aircraft of the Luftwaffe. Grozny was within range of German bombers from Fliegerkorps IV, based near the Terek river. But Grozny and the captured oilfields at Maykop produced only ten per cent of Soviet oil. The main fields at Baku were out of German fighter range. German bombers could have reached them, but it meant flying the most direct, thus most predictable route without protection. In August it may have been possible to carry out these operations owing to the weakness of Soviet air power in the region, but by October it had been considerably strengthened.

Clearing the Don Bend

On 23 July the main body of Army Group B started its advance toward the Don River. The Germans now met with increasing Soviet resistance from the newly formed Stalingrad Front, made up of the 62nd
62nd Army (Soviet Union)
The 62nd Order of Lenin Army was a field army established by the Soviet Union's Red Army during the Second World War. Formed as the 7th Reserve Army as part of the Stavka Reserve in May 1942, the formation was designated as the 62nd Rifle Army the following month...

 and 64th
7th Guards Army
The Red Army's 7th Guards Army was re-designated from the Soviet 64th Army on April 16, 1943.64th Army had originally been formed from 1st Reserve Army in July 1942, and alongside the 62nd Army, fought the German offensive during the Battle of Stalingrad to a standstill, for which it was raised to...

 Soviet Armies. On 26 July, XIV Panzer Corps broke through the Soviet lines and reached the Don River. The recently formed Soviet First and Fourth Tank Armies conducted several counterattacks against Sixth Army's advance, threatening XIV Panzer Corps, but neither attack by the inexperienced troops proved successful. In the south, Fourth Panzer Army made better progress against the Soviet 51st Army. After Hoth's Panzers crossed the Don, they started to advance on Kotelnikovo
Kotelnikovo
Kotelnikovo is a town and the administrative center of Kotelnikovsky District of Volgograd Oblast, Russia, located on the Kurmoyarsky Aksay River , southwest of Volgograd...

, reaching the town by 2 August. Heavy Soviet resistance convinced Paulus that the Sixth Army was not strong enough to cross the Don by itself, so he waited for Fourth Panzer Army to fight its way north. On 4 August, the Germans were still 97 kilometres (60.3 mi) from Stalingrad. By 10 August, the Red Army had largely been cleared from the western bank of the Don River but Soviet resistance continued in some areas, further delaying Army Group B's eastward offensive. Furthermore the Wehrmacht could not make appreciable headway towards Stalingrad because of heavy logistical problems caused by the poor state of Soviet roads, which created bottlenecks and shortages of both munitions and fuel. To ease the situation, the Luftwaffe sent an ad-hoc force of 300 Ju 52s, enabling the German Army to forge ahead. In some cases, bombers were diverted from combat operations to supply missions under the so-called Stalingrad Transport Region force.

The stubborn Soviet defence at the Don River forced the Germans to commit more and more troops to an increasingly vulnerable front, leaving little in the way of reserves to back up the Axis divisions on either flank. Consequently, the Soviets launched several counterattacks on Army Group B's northern flank between Stalingrad and Voronezh. Between 20–28 August, 63rd Army
63rd Army (Soviet Union)
The 63rd Army of the Soviet Union's Red Army was formed in July 1942, by the order of Headquarters Red Army Supreme Command № 994110, by renaming Stavka's 5th Reserve Army....

 together with 21st Army
21st Army (Soviet Union)
-June to September 1941:21st Army was a part of the Second Operational Echelon of the RKKA. It was formed from the forces of the Volga Military District in May 1941 and was initially based on 63rd Rifle Corps and 66th Rifle Corps. The army was under the command of Lieutenant-General Vasilii...

 counterattacked near Serafimovich
Serafimovich
Serafimovich is a town and the administrative center of Serafimovichsky District of Volgograd Oblast, Russia, located on the right bank of the Don River, northwest of Volgograd. Population:...

, forcing the 8th Italian Army to fall back. At the same time, 1st Guards Army attacked near Novo-Grigoryevskaja, extending its bridgehead. These and several other bridgeheads across the Don River, opposed by the 8th Italian and 2nd Hungarian Army, would cause major difficulties for the Germans in the future.

On 23 August, Sixth Army finally crossed the Don River, allowing Army Group B to establish a defensive line on one of its bends. The Hungarian, Italian and Romanian armies deployed for this task were now 60 kilometres (37.3 mi) from Stalingrad, which was also within reach of forward air bases. Consequently Luftwaffe bombers attacked the city, turning much of it to rubble. Soviet reports at the time asserted that civilian casualties between the 23–26 August, were 955 dead and 1,181 wounded. Although the final figures were likely to have been higher than this preliminary total, reports of civilian casualties numbering tens of thousands were probably exaggerations by the Soviets.

The two-pronged ground attack on Stalingrad involved the Sixth Army advancing from the north (Frolovo
Frolovo
Frolovo is a town in Volgograd Oblast, Russia, located on the Archeda River , north of Volgograd. Population: Frolovo was founded in 1868 as a settlement servicing the construction of the Gryazi–Povorino–Tsaritsyn railroad. It was granted town status in 1936....

) and Fourth Panzer Army coming up from the south (Kotelnikovo). In the first few days, XIV Panzer Corps opened a narrow breach between the main Sixth Army's body and the northern Stalingrad suburbs at the Volga River while in the south, heavy Soviet resistance prevented Fourth Panzer Army from making any headway. On 29 August another attempt was made with Hoth turning his forces west directly through the center of the 64th Army. The attack brought unexpected success, and Hoth's men found themselves in the rear areas of both the 64th and 62nd Armies. This created a salient and opened the opportunity to encircle and cut off the whole 62nd Army. Hoth continued his drive and von Weichs ordered the Sixth Army to complete the encirclement, but a strong Soviet counterattack held up its advance for three vital days, enabling Soviet forces in the salient to escape and fall back towards Stalingrad.

Despite this close escape, the rapid German advance caused considerable morale breakdown among the Soviet troops, who retreated in chaos, abandoning the outer defences of the city. After neutralizing the last limited local Soviet counterattacks, the Sixth Army resumed its offensive on 2 September and linked up with the Fourth Panzer Army the following day. On 13 September, the Germans reached the southern suburbs and began the Battle of Stalingrad
Battle of Stalingrad
The Battle of Stalingrad was a major battle of World War II in which Nazi Germany and its allies fought the Soviet Union for control of the city of Stalingrad in southwestern Russia. The battle took place between 23 August 1942 and 2 February 1943...

 the following day.

The Battle of Stalingrad

The advance into the Stalingrad against the defenders of the 62nd Army was carried out by the worn out forces of the Sixth Army, while the Fourth Panzer Army secured the southern flank. The city itself sprawled in a narrow, 24 km (14.9 mi) ribbon along the western side of the Volga River, which forced the Germans to conduct a frontal assault against the city, with the ruins of the city heavily favoring the defenders. To deal with the complete air superiority of the Luftwaffe, the commander of the 62nd Army, Vasily Chuikov
Vasily Chuikov
Vasily Ivanovich Chuikov was a Russian lieutenant general in the Red Army during World War II, twice Hero of the Soviet Union , who after the war became a Marshal of the Soviet Union.-Early life and career:Born into a peasant family in the village of Serebryanye Prudy, he joined the Red Army during...

, ordered his troops to engage the Germans in close quarters fighting ('hugging' the enemy), rendering the German superiority in combined arms tactics almost useless. The Luftwaffe nevertheless played a crucial role, as it suppressed Soviet artillery on the eastern side of the Volga and caused heavy casualties to the Soviet attempts to reinforce the defenders over the river. In September until early November, the Germans started 3 heavy assaults against the city, reducing the perimeter the Soviets held more and more. Although the Soviet casualties in the heavy street fighting were incredible, the German troops also suffered considerable losses. By early November, the Soviet-held territory was reduced to just four shallow bridgeheads, with the front lines only 180 m (590.6 ft) from the riverfront. Anticipating victory, substantial parts of the Luftwaffe were withdrawn to the Mediterranean in early November, to support the Axis operations in Tunisia
Tunisia Campaign
The Tunisia Campaign was a series of battles that took place in Tunisia during the North African Campaign of the Second World War, between Axis and Allied forces. The Allies consisted of British Imperial Forces, including Polish and Greek contingents, with American and French corps...

. Although Sixth Army now held about 90% of the city, it was nevertheless unable destroy the last pockets of resistance in time.

On 19 November, the Soviets launched Operation Uranus
Operation Uranus
Operation Uranus was the codename of the Soviet strategic operation in World War II which led to the encirclement of the German Sixth Army, the Third and Fourth Romanian armies, and portions of the German Fourth Panzer Army. The operation formed part of the ongoing Battle of Stalingrad, and was...

, a massive two-pronged counteroffensive against the Sixth Army's flanks. With the Sixth Army almost completely embroiled in the battle for the city and the Fourth Panzer Army exhausted, these flanks were mainly guarded by Romanian, Hungarian and Italian soldiers. The Romanian Third Army, situated on the Don River west of Stalingrad, as well as the Romanian Fourth Army to the Southeast of Stalingrad, had been under constant Soviet attack since September. The Romanian Third Army had been transferred from the Caucasus on 10 September to take over the Italian positions on the Don River and oppose the Soviet bridgeheads. The Romanians, who were in the direct path of the Soviet offensive, were therefore understrength and lacked proper anti-tank weapons, having only around six modern antitank guns
7.5 cm PaK 97/38
The Pak 97/38 was a German anti-tank gun used by the Wehrmacht in World War II. The gun was a combination of the barrel from the French Canon de 75 modèle 1897 and the carriage of the German 5 cm Pak 38....

 per division. The bulk of the German tank reserve, the 48th Panzer Corps, consisted of roughly 180 tanks, half of them obsolete Panzer 35(t)
Panzer 35(t)
The Panzerkampfwagen 35, commonly shortened to Panzer 35 or abbreviated as Pz.Kpfw. 35, was a Czechoslovak-designed light tank used mainly by Nazi Germany during World War II. The letter stood for tschechisch...

s. As result, the two Romanian armies were routed, and the Sixth Army as well as parts of Fourth Panzer Army trapped inside Stalingrad.

Hitler, against the advice of most of the involved army commanders, personally ordered the Sixth Army to remain on the defensive rather than try to break out. They would be re-supplied by air but since the required amount of supplies was far beyond the capabilities of the Luftwaffe, the fighting strength of Sixth Army diminished and the Soviets gained the upper hand in fighting inside the city. To stabilise and restore the situation on the Eastern Front, Army Group Don
Army Group Don
Army Group Don was a short-lived German army group during World War II.Army Group Don was created from the headquarters of the Eleventh Army in the southern sector of the Eastern Front on 22 November 1942. The army group only lasted until February 1943 when it was combined with Army Group B and...

 (Heeresgruppe Don) under Field Marshal von Manstein
Erich von Manstein
Erich von Manstein was a field marshal in World War II. He became one of the most prominent commanders of Germany's World War II armed forces...

 was created to fill the gap between Army Group A and B. On 12 December, a relief operation called Operation Winter Storm began. Spearheaded by some of the first Tiger tanks
Tiger I
Tiger I is the common name of a German heavy tank developed in 1942 and used in World War II. The final official German designation was Panzerkampfwagen Tiger Ausf. E, often shortened to Tiger. It was an answer to the unexpectedly formidable Soviet armour encountered in the initial months of...

, the offensive was able to drive within 48 kilometres (29.8 mi) of the southern edge of the Sixth Army's front, although the trapped German forces made no attempt to link up with the relief forces. The failed relief efforts led to a siege that lasted several months, during which the Sixth Army was ultimately destroyed.

Soviet counter strokes and aftermath

Following on from the success of Uranus, the Red Army began Operation Saturn
Operation Saturn
Operation Saturn, revised as Operation Little Saturn, was a Red Army operation on the Eastern Front of World War II that led to battles in the northern Caucasus and Donets Basin regions of the Soviet Union from December 1942 to February 1943....

, a plan designed to cut off the entire German Army Group A and all troops east of Rostov from the rest of the Heer. As result of Manstein's relief operation at Stalingrad, Soviet forces had been redeployed, so the operation was now dubbed "Little Saturn" and its objectives scaled down. The operation targeted the Eighth Italian Army and the remnants of Third Romanian Army and led to the destruction of most of the Italian forces. Although on the verge of collapse, Army Group B and Don were able to prevent a major Soviet breakthrough, but with Army Group A threatened to get cut off, it was ordered on 28 December to withdraw from the Caucasus.

In the following months the Soviets launched several follow-up offensives, summing up as the Voronezh-Kharkov Strategic Offensive. The Ostrogozhsk–Rossosh Offensive, launched on 12-13 January, destroyed large parts of the Second Hungarian Army and the remnants of Eighth Italian Army at the Don southeast of Voronezh. With its southern flank in danger, Second German Army was forced to withdraw from Voronezh and the Don. Those successful operations from November until January led Stavka believe that they could deal a fatal blow to the Germans to decide the war in southern Russia. Operation Star
Operation Star
Operation Zvesda was a Red Army offensive on the Eastern Front of World War II begun on 2 February 1943. The attack was the responsibility of the Voronezh Front under the command of Filipp Golikov. Its main objectives were the cities of Kharkov and Kursk...

, conducted by the Voronezh Front, was aimed at Kharkov, Kursk, and Belgorod
Belgorod
-Twin towns/sister cities:Belgorod is twinned with: Wakefield, England, United Kingdom Herne, North Rhine-Westphalia, Germany Palembang, South Sumatra, Indonesia Opole, Poland Vyshhorod, Ukraine Kharkiv, Ukraine-External links:...

, and Operation Gallop, conducted by the Southwestern Front, was aimed at Voroshilovgrad, Donetsk
Donetsk
Donetsk , is a large city in eastern Ukraine on the Kalmius river. Administratively, it is a center of Donetsk Oblast, while historically, it is the unofficial capital and largest city of the economic and cultural Donets Basin region...

 and then towards the Sea of Azov to cut off all German forces east of Donetsk. The operations were launched simultaneously at the end of January and the Soviets were able to break through the German lines during the first days. In the north Kursk fell on 8 February and Kharkov on 16 February after a German withdrawal, while in the south the Germans were pushed back to a line west of Voroshilovgrad. Facing this increasingly precarious situation, Army Group Don, B and parts of Army Group A were reunited as Army Group South under Manstein's command on 12 February.

With the initial success of the Soviet offensives, the Kharkov and Donbas operations were launched on 25 February. They were conducted by the newly formed Central Front led by Rokossovsky, which was made up from forces freed after the surrender of the German forces in Stalingrad on 2 February. The operations were aimed at Army Group Centre
Army Group Centre
Army Group Centre was the name of two distinct German strategic army groups that fought on the Eastern Front in World War II. The first Army Group Centre was created on 22 June 1941, as one of three German Army formations assigned to the invasion of the Soviet Union...

 in the north and timed to coincide with the anticipated successes of the Soviet operations in the south. Despite those heavy blows, Manstein's forces, fighting a vigorous defense campaign, were not cut off and prepared for an own counteroffensive, which would led to the Third Battle of Kharkov
Third Battle of Kharkov
The Third Battle of Kharkov was a series of offensive operations on the Eastern Front of World War II, undertaken by the German Army Group South against the Red Army, around the city of Kharkov , between 19 February and 15 March 1943...

 and the stabilisation of the front.

The disaster at Stalingrad marked the failure of Case Blue. Thereafter all previous gains had been reversed by the end of 1943, with the Kuban bridgehead, established at the Taman peninsula for a possible second thrust into the Caucasus, being the last to be evacuated on 9 October 1943.

Post-operation analysis

Due to the significant initial successes of the 1942 German summer offensive, the German command and especially Hitler expanded the already sophisticated plan even more, putting great strain on their forces. Hitler did not expect the Soviets to be able to launch a counteroffensive on the scale of Operation Uranus, and therefore deployed valuable units elsewhere on the front, while ordering the Wehrmacht to simultaneously strive for numerous goals. Any opposition to his fluctuating plans simply led to dismissal by Hitler, who interfered more and more in the command process.

Overstretched by the vast area they had captured, the reduced capabilities of the Heer and its allies to defend this territory enabled the Soviets to mount a decisive offensive at Stalingrad, encircling a whole German army. Soon both sides concentrated largely on the epic struggle for the city, making the Caucasus campaign a secondary theatre. With Army Group B unable to hold the Volga line, subsequent Soviet operations threatened to cut off Army Group A in the Caucasus, and it was forced to withdraw. The surrender of Sixth Army was a serious blow to German morale in general and it proved a personal shock to Hitler. Nevertheless, despite the destruction of Sixth Army, the Soviets only caused the Heer to retreat from their advance towards the Caucasus, further delaying the final decision on the Eastern Front
Eastern Front (World War II)
The Eastern Front of World War II was a theatre of World War II between the European Axis powers and co-belligerent Finland against the Soviet Union, Poland, and some other Allies which encompassed Northern, Southern and Eastern Europe from 22 June 1941 to 9 May 1945...

. The by now highly confident Soviet command overestimated its capabilities and pushed its forces deep into the German lines, to the limit of its supply lines, which led to a severe defeat at Kharkov
Third Battle of Kharkov
The Third Battle of Kharkov was a series of offensive operations on the Eastern Front of World War II, undertaken by the German Army Group South against the Red Army, around the city of Kharkov , between 19 February and 15 March 1943...

 and gave the Germans the opportunity to mount another large strategic offensive
Battle of Kursk
The Battle of Kursk took place when German and Soviet forces confronted each other on the Eastern Front during World War II in the vicinity of the city of Kursk, in the Soviet Union in July and August 1943. It remains both the largest series of armored clashes, including the Battle of Prokhorovka,...

.

See also

  • Reichskommissariat Kaukasus
    Reichskommissariat Kaukasus
    Reichskommissariat Kaukasus , literally "Reich Commissariat of the Caucasus ", was the theoretical political division and planned civilian occupation regime of Nazi Germany in the conquered territories of the Caucasus during World War II...

  • Operation Edelweiß
  • Operation Braunschweig
    Operation Braunschweig
    Operation Braunschweig , named for the German city, was the German summer offensive that began on 28 June 1942. The operation was initially named Fall Blau , which is the common name used for the whole offensive. The name was changed from Blau to Braunschweig on 30 June...

  • Battle of Stalingrad
    Battle of Stalingrad
    The Battle of Stalingrad was a major battle of World War II in which Nazi Germany and its allies fought the Soviet Union for control of the city of Stalingrad in southwestern Russia. The battle took place between 23 August 1942 and 2 February 1943...

  • Operation Uranus
    Operation Uranus
    Operation Uranus was the codename of the Soviet strategic operation in World War II which led to the encirclement of the German Sixth Army, the Third and Fourth Romanian armies, and portions of the German Fourth Panzer Army. The operation formed part of the ongoing Battle of Stalingrad, and was...

  • Operation Little Saturn
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