Operation Otto, also known as Plan Otto, was the code name for two independent plans by Nazi Germany. The 1938 plan was to occupy Austria; the second envisaged an attack on the Soviet Union and was developed from late July 1940.
The original Operation Otto was the plan to occupy Austria during the Anschluss in 1938. [1] It was named after the crown prince of Austria-Hungary at the time, Otto von Habsburg. [2]
The High Command of the German Army (OKH) also used Operation Otto as the code name in July 1940 for their original plan for the invasion of the Soviet Union. The plan was later renamed Operation Barbarossa in December 1940. The Germans estimated 240 destroyed Soviet divisions, with only 60 remaining intact. With such an overwhelming margin of victory, the plan was not completed, under the assumption that the Soviet Union could never recover. During Operation Barbarossa, the Germans in reality destroyed 248 divisions, but due to the Soviet mobilization, there were an additional 220 divisions remaining, far more than the expected 60. [3] [4] [5] Hitler, being haunted by the fate of Napoleon (who had taken Moscow but failed to destroy the Imperial Russian Army), altered the plan by placing less emphasis on the capture of Moscow and more on destroying the Red Army. [6]
The Oberkommando des Heeres was the high command of the Army of Nazi Germany. It was founded in 1935 as part of Adolf Hitler's rearmament of Germany. OKH was de facto the most important unit within the German war planning until the defeat at Moscow in December 1941.
Operation Barbarossa was the invasion of the Soviet Union by Nazi Germany and many of its Axis allies, starting on Sunday, 22 June 1941, during World War II. It was the largest and costliest land offensive in human history, with around 10 million combatants taking part, and over 8 million casualties by the end of the operation.
Heinz Wilhelm Guderian was a German general during World War II who, after the war, became a successful memoirist. An early pioneer and advocate of the "blitzkrieg" approach, he played a central role in the development of the panzer division concept. In 1936, he became the Inspector of Motorized Troops.
The European theatre of World War II was one of the two main theatres of combat during World War II. It saw heavy fighting across Europe for almost six years, starting with Germany's invasion of Poland on 1 September 1939 and ending with the Western Allies conquering most of Western Europe, the Soviet Union conquering most of Eastern Europe including the German capital Berlin, and Germany's unconditional surrender on 8 May 1945 although fighting continued elsewhere in Europe until 25 May. On 5 June 1945, the Berlin Declaration proclaiming the unconditional surrender of Germany to the four victorious powers was signed. The Allied powers fought the Axis powers on two major fronts, but there were other fronts varying in scale from the Italian campaign, to the Polish Campaign, as well as in a strategic bombing offensive and in the adjoining Mediterranean and Middle East theatre.
Moritz Albrecht Franz Friedrich Fedor von Bock was a German Generalfeldmarschall who served in the German Army during the Second World War. Bock served as the commander of Army Group North during the Invasion of Poland in 1939, commander of Army Group B during the Invasion of France in 1940, and later as the commander of Army Group Center during the attack on the Soviet Union in 1941; his final command was that of Army Group South in 1942.
The Eastern Front or the Second Russian Front 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 World War II, 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, eventually serving as the main reason for the defeat of Nazi Germany and the Axis nations. It is noted by historian Geoffrey Roberts that "More than 80 percent of all combat during the Second World War took place on the Eastern Front".
Georg Carl Wilhelm Friedrich von Küchler was a German Generalfeldmarschall of the Wehrmacht during the Second World War, who was subsequently convicted of war crimes. He commanded the 18th Army and Army Group North during the Soviet-German war of 1941–1945.
The Battle of Moscow was a military campaign that consisted of two periods of strategically significant fighting on a 600 km (370 mi) sector of the Eastern Front during World War II, between September 1941 and January 1942. The Soviet defensive effort frustrated Hitler's attack on Moscow, the capital and largest city of the Soviet Union. Moscow was one of the primary military and political objectives for Axis forces in their invasion of the Soviet Union.
Franz Halder was a German general and the chief of staff of the Army High Command (OKH) in Nazi Germany from 1938 until September 1942. During World War II, he directed the planning and implementation of Operation Barbarossa, the 1941 invasion of the Soviet Union. Halder became instrumental in the radicalisation of warfare on the Eastern Front. He had his staff draft both the Commissar Order and the Barbarossa Decree that allowed German soldiers to execute Soviet citizens for any reason without fear of later prosecution, leading to numerous war crimes and atrocities during the campaign. After the war, he had a decisive role in the development of the myth of the clean Wehrmacht.
Carl-Heinrich Rudolf Wilhelm von Stülpnagel was a German general in the Wehrmacht during World War II who was an army level commander. While serving as military commander of German-occupied France and as commander of the 17th Army in the Soviet Union during Operation Barbarossa. Stülpnagel participated in German war crimes, including authorising reprisal operations against civilian population and cooperating with the Einsatzgruppen in their mass murder of Jews. He was a member of the 20 July Plot to assassinate Adolf Hitler, being in charge of the conspirators' actions in France. After the failure of the plot, he was recalled to Berlin and attempted to commit suicide en route, but failed. Tried on 30 August 1944, he was convicted of treason and executed on the same day.
The first Battle of Smolensk was a battle during the second phase of Operation Barbarossa, the Axis invasion of the Soviet Union, in World War II. It was fought around the city of Smolensk between 10 July and 10 September 1941, about 400 km (250 mi) west of Moscow. The Ostheer had advanced 500 km (310 mi) into the USSR in the 18 days after the invasion on 22 June 1941.
Erich Kurt Richard Hoepner was a German general during World War II. An early proponent of mechanisation and armoured warfare, he was a Wehrmacht army corps commander at the beginning of the war, leading his troops during the invasion of Poland and the Battle of France.
The Yelnya offensive was a military operation by the Soviet Army during the Battle of Smolensk during Operation Barbarossa, the German invasion of the Soviet Union, which began the German-Soviet War. The offensive was an attack against the semi-circular Yelnya salient which the German 4th Army had extended 50 kilometres (31 mi) south-east of Smolensk, forming a staging area for an offensive towards Vyazma and eventually Moscow. Under heavy pressure on its flanks, the German army (Heer) evacuated the salient by 8 September 1941, leaving behind a devastated and depopulated region. As the first reverse that the Heer suffered during Barbarossa and the first recapture of the Soviet territory by the Red Army, the battle was covered by Nazi and Soviet propaganda and served as a morale boost to the Soviet population.
The 2nd Panzer Army was a German armoured formation during World War II, formed from the 2nd Panzer Group on October 5, 1941.
The 4th Panzer Division was an armored division in the Army of Nazi Germany.
The 4th Panzer Army, operating as Panzer Group 4 from its formation on 15 February 1941 to 1 January 1942, was a German panzer formation during World War II. As a key armoured component of the Wehrmacht, the army took part in the crucial battles of the German-Soviet war of 1941–45, including Operation Barbarossa, the Battle of Moscow, the Battle of Stalingrad, the Battle of Kursk, and the 1943 Battle of Kiev.
Reichskommissariat Moskowien was the civilian occupation-regime that Nazi Germany intended to establish in central and northern European Russia during World War II, one of several similar Reichskommissariate. It was also known initially as the Reichskommissariat Russland, but was later renamed as part of German policies of partitioning the Russian state. Siegfried Kasche was the projected Reichskomissar, but due to the Wehrmacht's failure to occupy the territories intended to form the Reichskommissariat, it remained on paper only.
The Battle of Białystok–Minsk was a German strategic operation conducted by the Wehrmacht's Army Group Centre under Field Marshal Fedor von Bock during the penetration of the Soviet border region in the opening stage of Operation Barbarossa, lasting from 22 June to 9 July 1941.
The 3rd Panzer Army was a German armoured formation during World War II, formed from the 3rd Panzer Group on 1 January 1942.
The 2nd Mechanised Corps was a formation in the Soviet Red Army during the Second World War.