The Eastern Front, also known as the Great Patriotic War, or the German–Soviet War, was a theatre of World War II fought between the European Axis powers and Allies, including the Soviet Union (USSR) and Poland. It encompassed Central Europe, Eastern Europe, Northeast Europe (Baltics), and Southeast Europe (Balkans), and lasted from 22 June 1941 to 9 May 1945. Of the estimated 70–85 million deaths attributed to the war, around 30 million occurred on the Eastern Front, including 9 million children. The Eastern Front was decisive in determining the outcome in the European theatre of operations in World War II and is the main cause of the defeat of Nazi Germany and the Axis nations. Historian Geoffrey Roberts noted that "more than 80 percent of all combat during the Second World War took place on the Eastern Front".
The Axis forces, led by Germany, invaded the Soviet Union in Operation Barbarossa on 22 June 1941. Despite warnings and the deployment of Axis armies on his borders, Stalin refused to believe that Hitler would invade and forbade any defensive preparations as to not provoke possible German retaliation. Thus, the Soviets were caught completely unprepared. They were unable to halt deep Axis advances into Russia, which came close to seizing Moscow. However, the Axis offensive stalled and failed to capture the city, and Hitler shifted his focus to the oil fields of the Caucasus the following year. German forces advanced into the Caucasus under Fall Blau ("Case Blue"), launched on 28 June 1942. The Soviets decisively defeated the Axis at the Battle of Stalingrad—the bloodiest battle in the war and arguably in all of human history—making it one of the key turning points of the front. A second great Axis defeat, at the Battle of Kursk, crippled German offensive capabilities permanently and cleared the way for Soviet offensives. Following the Red Army's enormous success in Operation Bagration, when they destroyed Germany's Army Group Center, several Axis allies defected to the Communists, such as Romania and Bulgaria. The Eastern Front concluded with the capture of Berlin, followed by the signing of the German Instrument of Surrender on 8 May, ending the Eastern Front and the war in Europe.
The battles on the Eastern Front constituted the largest military confrontation in history. In pursuit of its "Lebensraum" settler-colonial agenda, Nazi Germany waged a war of annihilation (Vernichtungskrieg) throughout Eastern Europe. Nazi military operations were characterised by brutality, scorched earth tactics, wanton destruction, mass deportations, starvation, wholesale terrorism, and massacres. These included the genocidal campaigns of Generalplan Ost and the Hunger Plan, which sought the extermination and ethnic cleansing of more than a hundred million Eastern Europeans.
German historian Ernst Nolte called the Eastern Front "the most atrocious war of conquest, enslavement, and annihilation known to modern history", while British historian Robin Cross expressed that "In the Second World War no theatre was more gruelling and destructive than the Eastern Front, and nowhere was the fighting more bitter".
The two principal belligerent powers in the Eastern Front were Germany and the Soviet Union, along with their respective allies. Though they never sent ground troops to the Eastern Front, the United States and the United Kingdom both provided substantial material aid to the Soviet Union in the form of the Lend-Lease program, along with naval and air support.
The joint German–Finnish operations across the northernmost Finnish–Soviet border and in the Murmansk region are considered part of the Eastern Front. In addition, the Soviet–Finnish Continuation War is generally also considered the northern flank of the Eastern Front.
Background
The German Empire was defeated in World War I (1914–1918). The Russian Empire and the subsequent Russian Republic belonged to the victorious bloc of the Allies, but following the October Revolution in Russia, the Bolshevik government signed the separate Treaty of Brest-Litovsk (March 1918), therefore violating its agreement with the other two members of the Triple Entente and breaking the alliance. The Bolsheviks also issued the Declaration of the Rights of the Peoples of Russia, which formally provided the peoples of the former Russian Empire the right to self-determination, including secession and creation of separate states; Russia had lost substantial territory in Eastern Europe as a result of the treaty, where the Bolsheviks in Petrograd conceded to German demands and ceded control of Poland, Lithuania, Estonia, Latvia, Finland, and other areas, to the Central Powers. Subsequently, when Germany in its turn surrendered to the Allies (November 1918) and these territories became independent states under the terms of the Paris Peace Conference of 1919 at Versailles, Soviet Russia was in the midst of a civil war, and the Allies did not recognise the Bolshevik government and supported White governments of Russia, so no Soviet Russian representation attended.
Adolf Hitler had declared his intention to invade the Soviet Union on 11 August 1939 to Carl Jacob Burckhardt, League of Nations Commissioner, by saying:
Everything I undertake is directed against the Russians. If the West is too stupid and blind to grasp this, then I shall be compelled to come to an agreement with the Russians, beat the West and then after their defeat turn against the Soviet Union with all my forces. I need the Ukraine so that they can't starve us out, as happened in the last war.
The Molotov–Ribbentrop Pact signed in August 1939 was a non-aggression agreement between Germany and the Soviet Union. It contained a secret protocol aiming to return Central Europe to the pre–World War I status quo by dividing it between Germany and the Soviet Union. Finland, Estonia, Latvia and Lithuania would return to the Soviet control, while Poland and Romania would be divided. The Eastern Front was also made possible by the German–Soviet Border and Commercial Agreement in which the Soviet Union gave Germany the resources necessary to launch military operations in Eastern Europe.
On 1 September 1939, Germany invaded Poland, starting World War II. On 17 September, the Soviet Union invaded Eastern Poland, and, as a result, Poland was partitioned among Germany, the Soviet Union and Lithuania. Soon after that, the Soviet Union demanded significant territorial concessions from Finland, and after Finland rejected Soviet demands, the Soviet Union attacked Finland on 30 November 1939 in what became known as the Winter War – a bitter conflict that resulted in a peace treaty on 13 March 1940, with Finland maintaining its independence but losing its eastern parts in Karelia.
In June 1940, the Soviet Union occupied and illegally annexed the three Baltic states (Estonia, Latvia and Lithuania). The Molotov–Ribbentrop Pact ostensibly provided security to the Soviets in the occupation both of the Baltics and of the north and northeastern regions of Romania (Northern Bukovina and Bessarabia, June–July 1940), although Hitler, in announcing the invasion of the Soviet Union, cited the Soviet annexations of Baltic and Romanian territory as having violated Germany's understanding of the pact. Moscow partitioned the annexed Romanian territory between the Ukrainian and Moldavian Soviet Socialist Republics.
Ideologies
German ideology
Hitler had argued in his autobiography Mein Kampf (1925) for the necessity of Lebensraum ("living space"): acquiring new territory for Germans in Eastern Europe, in particular Russia. He envisaged settling Germans there, as according to Nazi ideology the Germanic people constituted the "master race", while exterminating or deporting most of the existing inhabitants to Siberia and using the remainder as slave labour.
Hitler as early as 1917 had referred to the Russians as inferior, believing that the Bolshevik Revolution had put the Jews in power over the mass of Slavs, who were, in Hitler's opinion, incapable of ruling themselves and had thus ended up being ruled by Jewish masters.
The Nazi leadership, including Heinrich Himmler, saw the war against the Soviet Union as a struggle between the ideologies of Nazism and Jewish Bolshevism, ensuring territorial expansion for the Germanic Übermenschen (superhumans) - who according to Nazi ideology were the Aryan Herrenvolk ("master race") - at the expense of the Slavic Untermenschen (subhumans). Wehrmacht officers told their troops to target people who were described as "Jewish Bolshevik subhumans", the "Mongol hordes", the "Asiatic flood" and the "red beast". The vast majority of German soldiers viewed the war in Nazi terms, seeing the Soviet enemy as subhuman.
Hitler referred to the war in radical terms, calling it a "war of annihilation" (German: Vernichtungskrieg) which was both an ideological and racial war. The Nazi vision for the future of Eastern Europe was codified most clearly in the Generalplan Ost. The populations of occupied Central Europe and the Soviet Union were to be partially deported to West Siberia, enslaved and eventually exterminated; the conquered territories were to be colonised by German or "Germanized" settlers. In addition, the Nazis also sought to rid themselves of the large Jewish population of Central and Eastern Europe as part of their program aiming to exterminate all European Jews.
Psychologically, the German surge to the east in 1941 marked a high point in some Germans' feeling of Ostrausch - an intoxication with the idea of colonising the East.
After Germany's initial success at the Battle of Kiev in 1941, Hitler saw the Soviet Union as militarily weak and ripe for immediate conquest. In a speech at the Berlin Sportpalast on 3 October, he announced, "We have only to kick in the door and the whole rotten structure will come crashing down." Thus the German authorities expected another short Blitzkrieg and made no serious preparations for prolonged warfare. However, following the decisive Soviet victory at the Battle of Stalingrad in 1943 and the resulting dire German military situation, Nazi propaganda began to portray the war as a German defence of Western civilisation against destruction by the vast "Bolshevik hordes" that were pouring into Europe.
Soviet situation
Throughout the 1930s the Soviet Union underwent massive industrialisation and economic growth under the leadership of Joseph Stalin. Stalin's central tenet, "Socialism in One Country", manifested itself as a series of nationwide centralised five-year plans from 1929 onwards. This represented an ideological shift in Soviet policy, away from its commitment to the international communist revolution, and eventually leading to the dissolution of the Comintern (Third International) organisation in 1943. The Soviet Union started a process of militarisation with the first five-year plan that officially began in 1928, although it was only towards the end of the second five-year plan in the mid-1930s that military power became the primary focus of Soviet industrialisation.
In February 1936 the Spanish general election brought many communist leaders into the Popular Front government in the Second Spanish Republic, but in a matter of months a right-wing military coup initiated the Spanish Civil War of 1936–1939. This conflict soon took on the characteristics of a proxy war involving the Soviet Union and left-wing volunteers from different countries on the side of the predominantly socialist and communist-led Second Spanish Republic; while Nazi Germany, Fascist Italy, and Portugal's Estado Novo took the side of Spanish Nationalists, the military rebel group led by General Francisco Franco. It served as a useful testing ground for both the Wehrmacht and the Red Army to experiment with equipment and tactics that they would later employ on a wider scale in the Second World War.
Nazi Germany, which was an anti-communist régime, formalised its ideological position on 25 November 1936 by signing the Anti-Comintern Pact with the Empire of Japan. Fascist Italy joined the Pact a year later. The Soviet Union negotiated treaties of mutual assistance with France and with Czechoslovakia with the aim of containing Germany's expansion. The German Anschluss of Austria in 1938 and the dismemberment of Czechoslovakia (1938–1939) demonstrated the impossibility of establishing a collective security system in Europe, a policy advocated by the Soviet ministry of foreign affairs under Maxim Litvinov. This, as well as the reluctance of the British and French governments to sign a full-scale anti-German political and military alliance with the USSR, led to the Molotov–Ribbentrop Pact between the Soviet Union and Germany in late August 1939. The separate Tripartite Pact between what became the three prime Axis powers would not be signed until some four years after the Anti-Comintern Pact.
Forces
The war was fought between Germany, its allies and Finland, against the Soviet Union and its allies. The conflict began on 22 June 1941 with the Operation Barbarossa offensive, when Axis forces crossed the borders described in the German–Soviet Nonaggression Pact, thereby invading the Soviet Union. The war ended on 9 May 1945, when Germany's armed forces surrendered unconditionally following the Battle of Berlin (also known as the Berlin Offensive), a strategic operation executed by the Red Army.
The states that provided forces and other resources for the German war effort included the Axis Powers – primarily Romania, Hungary, Italy, pro-Nazi Slovakia, and Croatia. Anti-Soviet Finland, which had fought the Winter War against the Soviet Union, also joined the offensive. The Wehrmacht forces were also assisted by anti-communist partisans in places like Western Ukraine, and the Baltic states. Among the most prominent volunteer army formations was the Spanish Blue Division, sent by Spanish dictator Francisco Franco to keep his ties to the Axis intact.
The Soviet Union offered support to the anti-Axis partisans in many Wehrmacht-occupied countries in Central Europe, notably those in Slovakia and Poland. In addition, the Polish Armed Forces in the East, particularly the First and Second Polish Armies, were armed and trained, and would eventually fight alongside the Red Army. The Free French Forces also contributed to the Red Army by the formation of the GC3 (Groupe de Chasse 3 or 3rd Fighter Group) unit to fulfil the commitment of Charles de Gaulle, leader of the Free French, who thought that it was important for French servicemen to serve on all fronts.
The above figures includes all personnel in the German Army, i.e. active-duty Heer, Waffen SS, Luftwaffe ground forces, personnel of the naval coastal artillery and security units. In the spring of 1940, Germany had mobilised 5,500,000 men. By the time of the invasion of the Soviet Union, the Wehrmacht consisted of c. 3,800,000 men of the Heer, 1,680,000 of the Luftwaffe, 404,000 of the Kriegsmarine, 150,000 of the Waffen-SS, and 1,200,000 of the Replacement Army (contained 450,400 active reservists, 550,000 new recruits and 204,000 in administrative services, vigiles and or in convalescence). The Wehrmacht had a total strength of 7,234,000 men by 1941. For Operation Barbarossa, Germany mobilised 3,300,000 troops of the Heer, 150,000 of the Waffen-SS, and approximately 250,000 personnel of the Luftwaffe were actively earmarked.