title: Eastern Front (World War II)

text: While German historians do not apply any specific periodisation to the conduct of operations on the Eastern Front, all Soviet and Russian historians divide the war against Germany and its allies into three periods, which are further subdivided into eight major campaigns of the Theatre of war:


title: Eastern Front (World War II)

text: Operation Barbarossa began just before dawn on 22 June 1941. The Germans cut the wire network in all Soviet western military districts to undermine the Red Army's communications. Panicky transmissions from the Soviet front-line units to their command headquarters were picked up like this: "We are being fired upon. What shall we do?" The answer was just as confusing: "You must be insane. And why is your signal not in code?"


title: Eastern Front (World War II)

text: At 03:15 on 22 June 1941, 99 of 190 German divisions, including fourteen panzer divisions and ten motorised, were deployed against the Soviet Union from the Baltic to the Black Sea. They were accompanied by ten Romanian divisions, three Italian divisions, two Slovakian divisions and nine Romanian and four Hungarian brigades. On the same day, the Baltic, Western and Kiev Special military districts were renamed the Northwestern, Western and Southwestern Fronts respectively.


title: Eastern Front (World War II)

text: To establish air supremacy, the "Luftwaffe" began immediate attacks on Soviet airfields, destroying much of the forward-deployed Soviet Air Force airfield fleets consisting of largely obsolescent types before their pilots had a chance to leave the ground. For a month the offensive conducted on three axes was completely unstoppable as the panzer forces encircled hundreds of thousands of Soviet troops in huge pockets that were then reduced by slower-moving infantry armies while the panzers continued the offensive, following the "Blitzkrieg" doctrine.


title: Eastern Front (World War II)

text: Army Group North's objective was Leningrad via the Baltic states. Comprising the 16th and 18th Armies and the 4th Panzer Group, this formation advanced through the Baltic states, and the Russian Pskov and Novgorod regions. Local insurgents seized the moment and controlled most of Lithuania, northern Latvia and southern Estonia prior to the arrival of the German forces.


title: Eastern Front (World War II)

text: Army Group Centre's two panzer groups (the 2nd and 3rd), advanced to the north and south of Brest-Litovsk and converged east of Minsk, followed by the 2nd, 4th, and 9th Armies. The combined panzer force reached the Beresina River in just six days, from their start lines. The next objective was to cross the Dnieper river, which was accomplished by 11 July. Their next target was Smolensk, which fell on 16 July, but the fierce Soviet resistance in the Smolensk area and slowing of the "Wehrmacht" advance by the North and South Army Groups forced Hitler to halt a central thrust at Moscow and to divert the 3rd Panzer Group north. Critically, Guderian's 2nd Panzer Group was ordered to move south in a giant pincer manoeuvre with Army Group South which was advancing into Ukraine. Army Group Centre's infantry divisions were left relatively unsupported by armour to continue their slow advance to Moscow.


title: Eastern Front (World War II)

text: This decision caused a severe leadership crisis. The German field commanders argued for an immediate offensive towards Moscow, but Hitler over-ruled them, citing the importance of Ukrainian agricultural, mining and industrial resources, as well as the massing of Soviet reserves in the Gomel area between Army Group Centre's southern flank and the bogged-down Army Group South's northern flank. This decision, Hitler's "summer pause", is believed to have had a severe impact on the outcome of the Battle of Moscow later in the year, by slowing down the advance on Moscow in favour of encircling large numbers of Soviet troops around Kiev.


title: Eastern Front (World War II)

text: Army Group South, with the 1st Panzer Group, the 6th, 11th and 17th Armies, was tasked with advancing through Galicia and into Ukraine. Their progress, however, was rather slow, and they took heavy casualties in the Battle of Brody. At the beginning of July, the Third and Fourth Romanian Armies, aided by elements of the German 11th Army, fought their way through Bessarabia towards Odessa. The 1st Panzer Group turned away from Kiev for the moment, advancing into the Dnieper bend (western Dnipropetrovsk Oblast). When it joined up with the southern elements of Army Group South at Uman, the Group captured about 100,000 Soviet prisoners in a huge encirclement. Advancing armoured divisions of Army Group South met with Guderian's 2nd Panzer Group near Lokhvytsa in 16 September, cutting off large numbers of Red Army troops in the pocket east of Kiev. 400,000 Soviet prisoners were captured as Kiev was surrendered on 19 September.


title: Eastern Front (World War II)

text: As the Red Army withdrew behind the Dnieper and Dvina rivers, the Soviet Stavka (high command) turned its attention to evacuating as much of the western regions' industry as it could. Factories were dismantled and transported on flatcars away from the front line for re-establishment in more remote areas of the Ural Mountains, Caucasus, Central Asia and south-eastern Siberia. Most civilians were left to make their own way east, with only industry-related workers evacuated with the equipment; much of the population was left behind to the mercy of the invading forces.


title: Eastern Front (World War II)

text: Stalin ordered the retreating Red Army to initiate a scorched-earth policy to deny the Germans and their allies basic supplies as they advanced eastward. To carry out that order, destruction battalions were formed in front-line areas, having the authority to summarily execute any suspicious person. The destruction battalions burned down villages, schools, and public buildings. As a part of this policy, the NKVD massacred thousands of anti-Soviet prisoners.


title: Eastern Front (World War II)

text: Hitler then decided to resume the advance on Moscow, re-designating the panzer groups as panzer armies for the occasion. Operation Typhoon, which was set in motion on 30 September, saw the 2nd Panzer Army rush along the paved road from Oryol (captured 5 October) to the Oka River at Plavsk, while the 4th Panzer Army (transferred from Army Group North to Centre) and 3rd Panzer armies surrounded the Soviet forces in two huge pockets at Vyazma and Bryansk. Army Group North positioned itself in front of Leningrad and attempted to cut the rail link at Mga to the east. This began the 900-day Siege of Leningrad. North of the Arctic Circle, a German–Finnish force set out for Murmansk but could get no further than the Zapadnaya Litsa River, where they settled down.


title: Eastern Front (World War II)

text: Army Group South pushed down from the Dnieper to the Sea of Azov coast, also advancing through Kharkov, Kursk, and Stalino. The combined German and Romanian forces moved into the Crimea and took control of all of the peninsula by autumn (except Sevastopol, which held out until 3 July 1942). On 21 November, the Wehrmacht took Rostov, the gateway to the Caucasus. However, the German lines were over-extended and the Soviet defenders counterattacked the 1st Panzer Army's spearhead from the north, forcing them to pull out of the city and behind the Mius River; the first significant German withdrawal of the war.


title: Eastern Front (World War II)

text: The onset of the winter freeze saw one last German lunge that opened on 15 November, when the Wehrmacht attempted to encircle Moscow. On 27 November, the 4th Panzer Army got to within of the Kremlin when it reached the last tramstop of the Moscow line at Khimki. Meanwhile, the 2nd Panzer Army failed to take Tula, the last Soviet city that stood in its way to the capital. After a meeting held in Orsha between the head of the "OKH" (Army General Staff), General Franz Halder and the heads of three Army groups and armies, decided to push forward to Moscow since it was better, as argued by the head of Army Group Center, Field Marshal Fedor von Bock, for them to try their luck on the battlefield rather than just sit and wait while their opponent gathered more strength.


title: Eastern Front (World War II)

text: However, by 6 December it became clear that the "Wehrmacht" did not have the strength to capture Moscow, and the attack was suspended. Marshal Shaposhnikov thus began his counter-attack, employing freshly mobilised reserves, as well as some well-trained Far-Eastern divisions transferred from the east following intelligence that Japan would remain neutral.


title: Eastern Front (World War II)

text: The Soviet counter-offensive during the Battle of Moscow had removed the immediate German threat to the city. According to Zhukov, "the success of the December counter-offensive in the central strategic direction was considerable. Having suffered a major defeat the German striking forces of Army Group Centre were retreating." Stalin's objective in January 1942 was "to deny the Germans any breathing space, to drive them westward without let-up, to make them use up their reserves before spring comes..."


title: Eastern Front (World War II)

text: The main blow was to be delivered by a double envelopment orchestrated by the Northwestern Front, the Kalinin Front and the Western Front. The overall objective according to Zhukov was the "subsequent encirclement and destruction of the enemy's main forces in the area of Rzhev, Vyazma and Smolensk. The Leningrad Front, the Volkhov Front and the right wing forces of the Northwestern Front were to rout the Army Group North." The Southwestern Front and Southern Front were to defeat the Army Group South. The Caucasian Front and Black Sea Fleet were to take back the Crimea.


title: Eastern Front (World War II)

text: The 20th Army, part of the Soviet 1st Shock Army, the 22nd Tank Brigade and five ski battalions launched their attack on 10 January 1942. By 17 January, the Soviets had captured Lotoshino and Shakhovskaya. By 20 January, the 5th and 33rd Armies had captured Ruza, Dorokhovo, Mozhaisk and Vereya, while the 43rd and 49th Armies were at Domanovo.


title: Eastern Front (World War II)

text: The Wehrmacht rallied, retaining a salient at Rzhev. A Soviet parachute drop by two battalions of the 201st Airborne Brigade and the 250th Airborne Regiment on 18 and 22 January was designed to "cut off enemy communications with the rear." Lt.-Gen. Mikhail Grigoryevich Yefremov's 33rd Army aided by Gen. Belov's 1st Cavalry Corps and Soviet partisans attempted to seize Vyazma. This force was joined by additional paratroopers of the 8th Airborne Brigade at the end of January. However, in early February, the Germans managed to cut off this force, separating the Soviets from their main force in the rear of the Germans. They were supplied by air until April when they were given permission to regain the Soviet main lines. Only part of Belov's Cavalry Corps made it to safety however, while Yefremov's men fought "a losing battle."


title: Eastern Front (World War II)

text: By April 1942, the Soviet Supreme Command agreed to assume the defensive so as to "consolidate the captured ground." According to Zhukov, ""During the winter offensive, the forces of the Western Front had advanced from 70 to 100 km, which somewhat improved the overall operational and strategic situation on the Western sector.""


title: Eastern Front (World War II)

text: To the north, the Red Army surrounded a German garrison in Demyansk, which held out with air supply for four months, and established themselves in front of Kholm, Velizh, and Velikie Luki.


title: Eastern Front (World War II)

text: Further north still, the Soviet 2nd Shock Army was unleashed on the Volkhov River. Initially this made some progress; however, it was unsupported, and by June a German counterattack cut off and destroyed the army. The Soviet commander, Lieutenant General Andrey Vlasov, later defected to Germany and formed the ROA or Russian Liberation Army.


title: Eastern Front (World War II)

text: In the south the Red Army lunged over the Donets River at Izyum and drove a deep salient. The intent was to pin Army Group South against the Sea of Azov, but as the winter eased the Wehrmacht counter-attacked and cut off the over-extended Soviet troops in the Second Battle of Kharkov.


title: Eastern Front (World War II)

text: Although plans were made to attack Moscow again, on 28 June 1942, the offensive re-opened in a different direction. Army Group South took the initiative, anchoring the front with the Battle of Voronezh and then following the Don river southeastwards. The grand plan was to secure the Don and Volga first and then drive into the Caucasus towards the oil fields, but operational considerations and Hitler's vanity made him order both objectives to be attempted simultaneously. Rostov was recaptured on 24 July when the 1st Panzer Army joined in, and then that group drove south towards Maikop. As part of this, Operation Shamil was executed, a plan whereby a group of Brandenburger commandos dressed up as Soviet NKVD troops to destabilise Maikop's defences and allow the 1st Panzer Army to enter the oil town with little opposition.


title: Eastern Front (World War II)

text: Meanwhile, the 6th Army was driving towards Stalingrad, for a long period unsupported by 4th Panzer Army, which had been diverted to help 1st Panzer Army cross the Don. By the time the 4th Panzer Army had rejoined the Stalingrad offensive Soviet resistance (comprising the 62nd Army under Vasily Chuikov) had stiffened. A leap across the Don brought German troops to the Volga on 23 August but for the next three months the "Wehrmacht" would be fighting the Battle of Stalingrad street-by-street.


title: Eastern Front (World War II)

text: Towards the south, the 1st Panzer Army had reached the Caucasian foothills and the Malka River. At the end of August Romanian mountain troops joined the Caucasian spearhead, while the Romanian 3rd and 4th armies were redeployed from their successful task of clearing the Azov littoral. They took up position on either side of Stalingrad to free German troops for the main offensive. Mindful of the continuing antagonism between Axis allies Romania and Hungary over Transylvania, the Romanian army in the Don bend was separated from the Hungarian 2nd army by the Italian 8th Army. Thus, all of Hitler's allies were involved – including a Slovakian contingent with the 1st Panzer Army and a Croatian regiment attached to 6th Army.


title: Eastern Front (World War II)

text: The advance into the Caucasus bogged down, with the Germans unable to fight their way past Malgobek and to the main prize of Grozny. Instead, they switched the direction of their advance to approach it from the south, crossing the Malka at the end of October and entering North Ossetia and entered the suburbs of Ordzhonikidze on 2 November.


title: Eastern Front (World War II)

text: While the German 6th and 4th Panzer Armies had been fighting their way into Stalingrad, Soviet armies had congregated on either side of the city, specifically into the Don bridgeheads, and it was from these that they struck in November 1942. Operation Uranus started on 19 November. Two Soviet fronts punched through the Romanian lines and converged at Kalach on 23 November, trapping 300,000 Axis troops behind them. A simultaneous offensive on the Rzhev sector known as Operation Mars was supposed to advance to Smolensk, but was a costly failure, with German tactical defences preventing any breakthrough.


title: Eastern Front (World War II)

text: The Germans rushed to transfer troops to the Soviet Union in a desperate attempt to relieve Stalingrad, but the offensive could not get going until 12 December, by which time the 6th Army in Stalingrad was starving and too weak to break out towards it. Operation Winter Storm, with three transferred panzer divisions, got going briskly from Kotelnikovo towards the Aksai river but became bogged down short of its goal. To divert the rescue attempt, the Red Army decided to smash the Italians and come down behind the relief attempt if they could; that operation starting on 16 December. What it did accomplish was to destroy many of the aircraft that had been transporting relief supplies to Stalingrad. The fairly limited scope of the Soviet offensive, although still eventually targeted on Rostov, also allowed Hitler time to see sense and pull Army Group A out of the Caucasus and back over the Don.


title: Eastern Front (World War II)

text: On 31 January 1943, the 90,000 survivors of the 300,000-man 6th Army surrendered. By that time the Hungarian 2nd Army had also been wiped out. The Red Army advanced from the Don to the west of Stalingrad, marching through Kursk (retaken on 8 February 1943) and Kharkov (retaken 16 February 1943). To save the position in the south, the Germans decided to abandon the Rzhev salient in February, freeing enough troops to make a successful riposte in eastern Ukraine. Manstein's counteroffensive, strengthened by a specially trained SS Panzer Corps equipped with Tiger tanks, opened on 20 February 1943 and fought its way from Poltava back into Kharkov in the third week of March, when the spring thaw intervened. This left a glaring Soviet bulge (salient) in the front centered on Kursk.


title: Eastern Front (World War II)

text: After the failure of the attempt to capture Stalingrad, Hitler had delegated planning authority for the upcoming campaign season to the German Army High Command and reinstated Heinz Guderian to a prominent role, this time as Inspector of Panzer Troops. Debate among the General Staff was polarised, with even Hitler nervous about any attempt to pinch off the Kursk salient. He knew that in the intervening six months the Soviet position at Kursk had been reinforced heavily with anti-tank guns, tank traps, landmines, barbed wire, trenches, pillboxes, artillery and mortars.


title: Eastern Front (World War II)

text: However, if one last great "blitzkrieg" offensive could be mounted, then attention could then be turned to the Allied threat to the Western Front. Certainly, the peace negotiations in April had gone nowhere. The advance would be executed from the Orel salient to the north of Kursk and from Belgorod to the south. Both wings would converge on the area east of Kursk, and by that means restore the lines of Army Group South to the exact points that it held over the winter of 1941–1942.


title: Eastern Front (World War II)

text: In the north, the entire German 9th Army had been redeployed from the Rzhev salient into the Orel salient and was to advance from Maloarkhangelsk to Kursk. But its forces could not even get past the first objective at Olkhovatka, just into the advance. The 9th Army blunted its spearhead against the Soviet minefields, frustratingly so considering that the high ground there was the only natural barrier between them and flat tank country all the way to Kursk. The direction of advance was then switched to Ponyri, to the west of Olkhovatka, but the 9th Army could not break through here either and went over to the defensive. The Red Army then launched a counter-offensive, Operation Kutuzov.


title: Eastern Front (World War II)

text: On 12 July the Red Army battled through the demarcation line between the 211th and 293rd divisions on the Zhizdra River and steamed towards Karachev, right behind them and behind Orel. The southern offensive, spearheaded by 4th Panzer Army, led by Gen. Col. Hoth, with three Tank Corps made more headway. Advancing on either side of the upper Donets on a narrow corridor, the II SS Panzer Corps and the Großdeutschland Panzergrenadier divisions battled their way through minefields and over comparatively high ground towards Oboyan. Stiff resistance caused a change of direction from east to west of the front, but the tanks got before encountering the reserves of the Soviet 5th Guards Tank Army outside Prokhorovka. Battle was joined on 12 July, with about one thousand tanks being engaged.


title: Eastern Front (World War II)

text: After the war, the battle near Prochorovka was idealised by Soviet historians as the largest tank battle of all time. The meeting engagement at Prochorovka was a Soviet defensive success, albeit at heavy cost. The Soviet 5th Guards Tank Army, with about 800 light and medium tanks, attacked elements of the II SS Panzer Corps. Tank losses on both sides have been the source of controversy ever since. Although the 5th Guards Tank Army did not attain its objectives, the German advance had been halted.


title: Eastern Front (World War II)

text: At the end of the day both sides had fought each other to a standstill, but regardless of the German failure in the north Erich von Manstein proposed he continue the attack with the 4th Panzer Army. The Red Army started the strong offensive operation in the northern Orel salient and achieved a breakthrough on the flank of the German 9th Army. Also worried by the Allies' landing in Sicily on 10 July, Hitler made the decision to halt the offensive even as the German 9th Army was rapidly giving ground in the north. The Germans' final strategic offensive in the Soviet Union ended with their defence against a major Soviet counteroffensive that lasted into August.


title: Eastern Front (World War II)

text: The Kursk offensive was the last on the scale of 1940 and 1941 that the "Wehrmacht" was able to launch; subsequent offensives would represent only a shadow of previous German offensive might.


title: Eastern Front (World War II)

text: The Soviet multi-stage summer offensive started with the advance into the Orel salient. The diversion of the well-equipped "Großdeutschland Division" from Belgorod to Karachev could not counteract it, and the Wehrmacht began a withdrawal from Orel (retaken by the Red Army on 5 August 1943), falling back to the Hagen line in front of Bryansk. To the south, the Red Army broke through Army Group South's Belgorod positions and headed for Kharkov once again. Although intense battles of movement throughout late July and into August 1943 saw the Tigers blunting Soviet tank attacks on one axis, they were soon outflanked on another line to the west as the Soviet forces advanced down the Psel, and Kharkov was abandoned for the final time on 22 August.


title: Eastern Front (World War II)

text: The German forces on the Mius, now comprising the 1st Panzer Army and a reconstituted 6th Army, were by August too weak to repulse a Soviet attack on their own front, and when the Red Army hit them they retreated all the way through the Donbas industrial region to the Dnieper, losing half the farmland that Germany had invaded the Soviet Union to exploit. At this time Hitler agreed to a general withdrawal to the Dnieper line, along which was meant to be the "Ostwall", a line of defence similar to the Westwall (Siegfried Line) of fortifications along the German frontier in the west.


title: Eastern Front (World War II)

text: The main problem for the Wehrmacht was that these defences had not yet been built; by the time Army Group South had evacuated eastern Ukraine and begun withdrawing across the Dnieper during September, the Soviet forces were hard behind them. Tenaciously, small units paddled their way across the wide river and established bridgeheads. A second attempt by the Red Army to gain land using parachutists, mounted at Kaniv on 24 September, proved as disappointing as at Dorogobuzh eighteen months previously. The paratroopers were soon repelled – but not until still more Red Army troops had used the cover they provided to get themselves over the Dnieper and securely dug in.


title: Eastern Front (World War II)

text: As September ended and October started, the Germans found the Dnieper line impossible to hold as the Soviet bridgeheads grew. Important Dnieper towns started to fall, with Zaporozhye the first to go, followed by Dnepropetrovsk. Finally, early in November the Red Army broke out of its bridgeheads on either side of Kiev and captured the Ukrainian capital, at that time the third largest city in the Soviet Union.


title: Eastern Front (World War II)

text: To the south, the Second Ukrainian Front (ex Steppe Front) had crossed the Dnieper at Kremenchug and continued westwards. In the second week of January 1944 they swung north, meeting Vatutin's tank forces which had swung south from their penetration into Poland and surrounding ten German divisions at Korsun–Shevchenkovsky, west of Cherkassy. Hitler's insistence on holding the Dnieper line, even when facing the prospect of catastrophic defeat, was compounded by his conviction that the Cherkassy pocket could break out and even advance to Kiev, but Manstein was more concerned about being able to advance to the edge of the pocket and then implore the surrounded forces to break out.


title: Eastern Front (World War II)

text: By 16 February the first stage was complete, with panzers separated from the contracting Cherkassy pocket only by the swollen Gniloy Tikich river. Under shellfire and pursued by Soviet tanks, the surrounded German troops, among whom were the 5th SS Panzer Division "Wiking", fought their way across the river to safety, although at the cost of half their number and all their equipment. They assumed the Red Army would not attack again, with the spring approaching, but on 3 March the Soviet Ukrainian Front went over to the offensive. Having already isolated the Crimea by severing the Perekop isthmus, Malinovsky's forces advanced across the mud to the Romanian border, not stopping on the river Prut.


title: Eastern Front (World War II)

text: One final move in the south completed the 1943–44 campaigning season, which had wrapped up a Soviet advance of over . In March, 20 German divisions of "Generaloberst" Hans-Valentin Hube's 1st Panzer Army were encircled in what was to be known as Hube's Pocket near Kamenets-Podolskiy. After two weeks' of heavy fighting, the 1st Panzer managed to escape the pocket, at the cost of losing almost the entire heavy equipment. At this point, Hitler sacked several prominent generals, Manstein included. In April, the Red Army took back Odessa, followed by 4th Ukrainian Front's campaign to restore control over the Crimea, which culminated in the capture of Sevastopol on 10 May.


title: Eastern Front (World War II)

text: Along Army Group Centre's front, August 1943 saw this force pushed back from the Hagen line slowly, ceding comparatively little territory, but the loss of Bryansk, and more importantly Smolensk, on 25 September cost the "Wehrmacht" the keystone of the entire German defensive system. The 4th and 9th armies and 3rd Panzer Army still held their own east of the upper Dnieper, stifling Soviet attempts to reach Vitebsk. On Army Group North's front, there was barely any fighting at all until January 1944, when out of nowhere Volkhov and Second Baltic Fronts struck.


title: Eastern Front (World War II)

text: In a lightning campaign, the Germans were pushed back from Leningrad and Novgorod was captured by Soviet forces. After a advance in January and February, the Leningrad Front had reached the borders of Estonia. To Stalin, the Baltic Sea seemed the quickest way to take the battles to the German territory in East Prussia and seize control of Finland. The Leningrad Front's offensives towards Tallinn, a main Baltic port, were stopped in February 1944. The German army group "Narwa" included Estonian conscripts, defending the re-establishment of Estonian independence.


title: Eastern Front (World War II)

text: "Wehrmacht" planners were convinced that the Red Army would attack again in the south, where the front was from Lviv and offered the most direct route to Berlin. Accordingly, they stripped troops from Army Group Centre, whose front still protruded deep into the Soviet Union. The Germans had transferred some units to France to counter the invasion of Normandy two weeks before. The Belorussian Offensive (codenamed Operation Bagration), which was agreed upon by Allies at the Tehran Conference in December 1943 and launched on 22 June 1944, was a massive Soviet attack, consisting of four Soviet army groups totalling over 120 divisions that smashed into a thinly held German line.


title: Eastern Front (World War II)

text: They focused their massive attacks on Army Group Centre, not Army Group North Ukraine as the Germans had originally expected. More than 2.3 million Soviet troops went into action against German Army Group Centre, which had a strength of fewer than 800,000 men. At the points of attack, the numerical and quality advantages of the Soviet forces were overwhelming. The Red Army achieved a ratio of ten to one in tanks and seven to one in aircraft over their enemy. The Germans crumbled. The capital of Belarus, Minsk, was taken on 3 July, trapping some 100,000 Germans. Ten days later the Red Army reached the prewar Polish border. "Bagration" was, by any measure, one of the largest single operations of the war.


title: Eastern Front (World War II)

text: By the end of August 1944, it had cost the Germans ~400,000 dead, wounded, missing and sick, from whom 160,000 were captured, as well as 2,000 tanks and 57,000 other vehicles. In the operation, the Red Army lost ~180,000 dead and missing (765,815 in total, including wounded and sick plus 5,073 Poles), as well as 2,957 tanks and assault guns. The offensive at Estonia claimed another 480,000 Soviet soldiers, 100,000 of them classed as dead.


title: Eastern Front (World War II)

text: The neighbouring Lvov–Sandomierz operation was launched on 17 July 1944, with the Red Army routing the German forces in Western Ukraine and retaking Lviv. The Soviet advance in the south continued into Romania and, following a coup against the Axis-allied government of Romania on 23 August, the Red Army occupied Bucharest on 31 August. Romania and the Soviet Union signed an armistice on 12 September.


title: Eastern Front (World War II)

text: The rapid progress of Operation Bagration threatened to cut off and isolate the German units of Army Group North bitterly resisting the Soviet advance towards Tallinn. Despite a ferocious attack at the Sinimäed Hills, Estonia, the Soviet Leningrad Front failed to break through the defence of the smaller, well-fortified army detachment "Narwa" in terrain not suitable for large-scale operations.


title: Eastern Front (World War II)

text: On the Karelian Isthmus, the Red Army launched a Vyborg–Petrozavodsk Offensive against the Finnish lines on 9 June 1944 (coordinated with the Western Allied Invasion of Normandy). Three armies were pitted there against the Finns, among them several experienced guards rifle formations. The attack breached the Finnish front line of defence in Valkeasaari on 10 June and the Finnish forces retreated to their secondary defence line, the VT-line. The Soviet attack was supported by a heavy artillery barrage, air bombardments and armoured forces. The VT-line was breached on 14 June and after a failed counterattack in Kuuterselkä by the Finnish armoured division, the Finnish defence had to be pulled back to the VKT-line. After heavy fighting in the battles of Tali-Ihantala and Ilomantsi, Finnish troops finally managed to halt the Soviet attack.


title: Eastern Front (World War II)

text: In Poland, as the Red Army approached, the Polish Home Army (AK) launched Operation Tempest. During the Warsaw Uprising, the Red Army were ordered to halt at the Vistula River. Whether Stalin was unable or unwilling to come to the aid of the Polish resistance is disputed.


title: Eastern Front (World War II)

text: In Slovakia, the Slovak National Uprising started as an armed struggle between German "Wehrmacht" forces and rebel Slovak troops between August and October 1944. It was centered at Banská Bystrica.


title: Eastern Front (World War II)

text: On 8 September 1944 the Red Army began an attack on the Dukla Pass on the Slovak–Polish border. Two months later, the Soviet forces won the battle and entered Slovakia. The toll was high: 20,000 Red Army soldiers died, plus several thousand Germans, Slovaks and Czechs.


title: Eastern Front (World War II)

text: Under the pressure of the Soviet Baltic Offensive, the German Army Group North were withdrawn to fight in the sieges of Saaremaa, Courland and Memel.


title: Eastern Front (World War II)

text: The Soviet Union finally entered Warsaw on 17 January 1945, after the city was destroyed and abandoned by the Germans. Over three days, on a broad front incorporating four army fronts, the Red Army launched the Vistula–Oder Offensive across the Narew River and from Warsaw. The Soviets outnumbered the Germans on average by 5–6:1 in troops, 6:1 in artillery, 6:1 in tanks and 4:1 in self-propelled artillery. After four days the Red Army broke out and started moving thirty to forty kilometres a day, taking the Baltic states, Danzig, East Prussia, Poznań, and drawing up on a line sixty kilometres east of Berlin along the River Oder. During the full course of the Vistula–Oder operation (23 days), the Red Army forces sustained 194,191 total casualties (killed, wounded and missing) and lost 1,267 tanks and assault guns.


title: Eastern Front (World War II)

text: On 25 January 1945, Hitler renamed three army groups. Army Group North became Army Group Courland; Army Group Centre became Army Group North and Army Group A became Army Group Centre. Army Group North (old Army Group Centre) was driven into an ever-smaller pocket around Königsberg in East Prussia.


title: Eastern Front (World War II)

text: A limited counter-attack (codenamed Operation Solstice) by the newly created Army Group Vistula, under the command of "Reichsführer-SS" Heinrich Himmler, had failed by 24 February, and the Red Army drove on to Pomerania and cleared the right bank of the Oder River. In the south, the German attempts, in Operation Konrad, to relieve the encircled garrison at Budapest failed and the city fell on 13 February. On 6 March, the Germans launched what would be their final major offensive of the war, Operation Spring Awakening, which failed by 16 March. On 30 March the Red Army entered Austria and captured Vienna on 13 April.


title: Eastern Front (World War II)

text: OKW claim German losses of 77,000 killed, 334,000 wounded and 192,000 missing, with a total of 603,000 men, on the Eastern Front during January and February 1945.


title: Eastern Front (World War II)

text: On 9 April 1945, Königsberg in East Prussia finally fell to the Red Army, although the shattered remnants of Army Group Centre continued to resist on the Vistula Spit and Hel Peninsula until the end of the war in Europe. The East Prussian operation, though often overshadowed by the Vistula–Oder operation and the later battle for Berlin, was in fact one of the largest and costliest operations fought by the Red Army throughout the war. During the period it lasted (13 January – 25 April), it cost the Red Army 584,788 casualties, and 3,525 tanks and assault guns.


title: Eastern Front (World War II)

text: The fall of Königsberg allowed Stavka to free up General Konstantin Rokossovsky's 2nd Belorussian Front (2BF) to move west to the east bank of the Oder. During the first two weeks of April, the Red Army performed their fastest front redeployment of the war. General Georgy Zhukov concentrated his 1st Belorussian Front (1BF), which had been deployed along the Oder river from Frankfurt in the south to the Baltic, into an area in front of the Seelow Heights. The 2BF moved into the positions being vacated by the 1BF north of the Seelow Heights. While this redeployment was in progress, gaps were left in the lines and the remnants of the German 2nd Army, which had been bottled up in a pocket near Danzig, managed to escape across the Oder. To the south General Ivan Konev shifted the main weight of the 1st Ukrainian Front (1UF) out of Upper Silesia north-west to the Neisse River. The three Soviet fronts had altogether some 2.5 million men (including 78,556 soldiers of the 1st Polish Army); 6,250 tanks; 7,500 aircraft; 41,600 artillery pieces and mortars; 3,255 truck-mounted Katyusha rocket launchers, (nicknamed "Stalin Organs"); and 95,383 motor vehicles, many of which were manufactured in the United States.


title: Eastern Front (World War II)

text: The Soviet offensive had two objectives. Because of Stalin's suspicions about the intentions of the Western Allies to hand over territory occupied by them in the post-war Soviet sphere of influence, the offensive was to be on a broad front and was to move as rapidly as possible to the west, to meet the Western Allies as far west as possible. But the over-riding objective was to capture Berlin. The two were complementary because possession of the zone could not be won quickly unless Berlin was taken. Another consideration was that Berlin itself held strategic assets, including Adolf Hitler and part of the German atomic bomb program.


title: Eastern Front (World War II)

text: The offensive to capture central Germany and Berlin started on 16 April with an assault on the German front lines on the Oder and Neisse rivers. After several days of heavy fighting the Soviet 1BF and 1UF punched holes through the German front line and were fanning out across central Germany. By 24 April, elements of the 1BF and 1UF had completed the encirclement of the German capital and the Battle of Berlin entered its final stages. On 25 April the 2BF broke through the German 3rd Panzer Army's line south of Stettin. They were now free to move west towards the British 21st Army Group and north towards the Baltic port of Stralsund. The 58th Guards Rifle Division of the 5th Guards Army made contact with the US 69th Infantry Division of the First Army near Torgau, Germany at the Elbe river.


title: Eastern Front (World War II)

text: On 29 and 30 April, as the Soviet forces fought their way into the centre of Berlin, Adolf Hitler married Eva Braun and then committed suicide by taking cyanide and shooting himself. In his will, Hitler appointed Grand Admiral Karl Dönitz as new President of the Reich and Propaganda Minister Joseph Goebbels as new Chancellor of the Reich; however, Goebbels also committed suicide, along with his wife Magda and their children, on 1 May 1945. Helmuth Weidling, defence commandant of Berlin, surrendered the city to the Soviet forces on 2 May. Altogether, the Berlin operation (16 April – 2 May) cost the Red Army 361,367 casualties (dead, wounded, missing and sick) and 1,997 tanks and assault guns. German losses in this period of the war remain impossible to determine with any reliability.


title: Eastern Front (World War II)

text: Upon learning of Hitler and Goebbels's death, Dönitz (now President of the Reich) appointed Johann Ludwig Schwerin von Krosigk as new "Leading Minister" of the German Reich. Rapidly advancing Allied forces limited the jurisdiction of the new German government to an area around Flensburg near the Danish border, where Dönitz's headquarters were located, along with Mürwik. Accordingly, this administration was referred to as the Flensburg government. Dönitz and Schwerin von Krosigk attempted to negotiate an armistice with the Western Allies while continuing to resist the Soviet Army, but were eventually forced to accept an unconditional surrender on all fronts.


title: Eastern Front (World War II)

text: At 2:41 am on 7 May 1945, at SHAEF headquarters, German Chief-of-Staff General Alfred Jodl signed the unconditional surrender documents for all German forces to the Allies at Reims in France. It included the phrase "All forces under German control to cease active operations at 2301 hours Central European time on 8 May 1945". The next day shortly before midnight, Field Marshal Wilhelm Keitel repeated the signing in Berlin at Zhukov's headquarters, now known as the German-Russian Museum. The war in Europe was over.


title: Eastern Front (World War II)

text: In the Soviet Union the end of the war is considered to be 9 May, when the surrender took effect Moscow time. This date is celebrated as a national holiday – Victory Day – in Russia (as part of a two-day 8–9 May holiday) and some other post-Soviet countries. The ceremonial Victory parade was held in Moscow on 24 June.


title: Eastern Front (World War II)

text: The German Army Group Centre initially refused to surrender and continued to fight in Czechoslovakia until about 11 May. A small German garrison on the Danish island of Bornholm refused to surrender until they were bombed and invaded by the Soviets. The island was returned to the Danish government four months later.


title: Eastern Front (World War II)

text: The final battle of the Second World War on the Eastern Front, the Battle of Slivice, broke out on 11 May and ended in a Soviet victory on the 12th.


title: Eastern Front (World War II)

text: On 13 May 1945, all Soviet offensives ceased and the fighting on the Eastern Front of World War II came to an end.


title: Eastern Front (World War II)

text: After the German defeat, Joseph Stalin promised his allies Truman and Churchill that he would attack the Japanese within 90 days of the German surrender. The Soviet invasion of Manchuria began on 8 August 1945, with an assault on the Japanese puppet states of Manchukuo and neighbouring Mengjiang; the greater offensive would eventually include northern Korea, southern Sakhalin, and the Kuril Islands. Apart from the Battles of Khalkhin Gol, it marked the only military action of the Soviet Union against Imperial Japan; at the Yalta Conference, it had agreed to Allied pleas to terminate the neutrality pact with Japan and enter the Second World War's Pacific theatre within three months after the end of the war in Europe. While not a part of the Eastern Front operations, it is included here because the commanders and much of the forces used by the Red Army came from the European Theatre of operations and benefited from the experience gained there. In many ways this was a 'perfect' operation, delivered with the skill gained during the bitter fighting with the Wehrmacht and Luftwaffe over four years.


title: Eastern Front (World War II)

text: The Eastern Front was the largest and bloodiest theatre of World War II. It is generally accepted as being the deadliest conflict in human history, with over 30 million killed as a result. The German armed forces suffered 80% of its military deaths in the Eastern Front. It involved more land combat than all other World War II theatres combined. The distinctly brutal nature of warfare on the Eastern Front was exemplified by an often wilful disregard for human life by both sides. It was also reflected in the ideological premise for the war, which also saw a momentous clash between two directly opposed ideologies.


title: Eastern Front (World War II)

text: Aside from the ideological conflict, the mindframe of the leaders of Germany and the Soviet Union, Hitler and Stalin respectively, contributed to the escalation of terror and murder on an unprecedented scale. Stalin and Hitler both disregarded human life in order to achieve their goal of victory. This included the terrorisation of their own people, as well as mass deportations of entire populations. All these factors resulted in tremendous brutality both to combatants and civilians that found no parallel on the Western Front. According to "Time" magazine: "By measure of manpower, duration, territorial reach and casualties, the Eastern Front was as much as four times the scale of the conflict on the Western Front that opened with the Normandy invasion." Conversely, General George Marshall, the U.S. Army Chief of Staff, calculated that without the Eastern Front, the United States would have had to double the number of its soldiers on the Western Front.


title: Eastern Front (World War II)

text: The war inflicted huge losses and suffering upon the civilian populations of the affected countries. Behind the front lines, atrocities against civilians in German-occupied areas were routine, including those carried out as part of the Holocaust. German and German-allied forces treated civilian populations with exceptional brutality, massacring whole village populations and routinely killing civilian hostages (see German war crimes). Both sides practised widespread scorched earth tactics, but the loss of civilian lives in the case of Germany was incomparably smaller than that of the Soviet Union, in which at least 20 million were killed. According to British historian Geoffrey Hosking, "The full demographic loss to the Soviet peoples was even greater: since a high proportion of those killed were young men of child-begetting age, the postwar Soviet population was 45 to 50 million smaller than post-1939 projections would have led one to expect."


title: Eastern Front (World War II)

text: When the Red Army invaded Germany in 1944, many German civilians suffered from reprisals by Red Army soldiers (see Soviet war crimes). After the war, following the Yalta conference agreements between the Allies, the German populations of East Prussia and Silesia were displaced to the west of the Oder–Neisse line, in what became one of the largest forced migrations of people in world history.


title: Eastern Front (World War II)

text: The Soviet Union came out of World War II militarily victorious but economically and structurally devastated. Much of the combat took place in or close to populated areas, and the actions of both sides contributed to massive loss of civilian life and tremendous material damage. According to a summary, presented by Lieutenant General Roman Rudenko at the International Military Tribunal in Nuremberg, the property damage in the Soviet Union inflicted by the Axis invasion was estimated to a value of 679 billion rubles. The largest number of civilian deaths in a single city was 1.2 million citizens dead during the Siege of Leningrad.


title: Eastern Front (World War II)

text: The combined damage consisted of complete or partial destruction of 1,710 cities and towns, 70,000 villages/hamlets, 2,508 church buildings, 31,850 industrial establishments, of railroad, 4,100 railroad stations, 40,000 hospitals, 84,000 schools, and 43,000 public libraries; leaving 25 million homeless. Seven million horses, 17 million cattle, 20 million pigs, 27 million sheep were also slaughtered or driven off. Wild fauna were also affected. Wolves and foxes fleeing westward from the killing zone, as the Soviet army advanced between 1943 and 1945, were responsible for a rabies epidemic that spread slowly westwards, reaching the coast of the English Channel by 1968.


title: Eastern Front (World War II)

text: The Soviet Union and Nazi Germany were both ideologically driven states (by Soviet communism and by Nazism respectively), in which the foremost political leaders had near-absolute power. The character of the war was thus determined by the political leaders and their ideology to a much greater extent than in any other theatre of World War II.


title: Eastern Front (World War II)

text: Adolf Hitler exercised tight control over the German war-effort, spending much of his time in his command bunkers (most notably at Rastenburg in East Prussia, at Vinnitsa in Ukraine, and under the garden of the Reich Chancellery in Berlin). At crucial periods in the war he held daily situation-conferences at which he used his remarkable talent for public speaking to overwhelm opposition from his generals and from the OKW staff with rhetoric.


title: Eastern Front (World War II)

text: In part because of the unexpected degree of German success in the Battle of France (despite the warnings of the professional military) Hitler believed himself a military genius, with a grasp of the total war-effort that eluded his generals. In August 1941, when Walther von Brauchitsch (commander-in-chief of the "Wehrmacht") and Fedor von Bock appealed for an attack on Moscow, Hitler instead ordered the encirclement and capture of Ukraine, in order to acquire the farmland, industry, and natural resources of that country. Some historians like Bevin Alexander in "How Hitler Could Have Won" regard this decision as a missed opportunity to win the war.


title: Eastern Front (World War II)

text: In the winter of 1941–1942 Hitler believed that his obstinate refusal to allow the German armies to retreat had saved Army Group Centre from collapse. He later told Erhard Milch:


title: Eastern Front (World War II)

text: I had to act ruthlessly. I had to send even my closest generals packing, two army generals, for example … I could only tell these gentlemen, "Get yourself back to Germany as rapidly as you can – but leave the army in my charge. And the army is staying at the front."


title: Eastern Front (World War II)

text: The success of this hedgehog defence outside Moscow led Hitler to insist on the holding of territory when it made no military sense, and to sack generals who retreated without orders. Officers with initiative were replaced with yes-men or with fanatical Nazis. The disastrous encirclements later in the war – at Stalingrad, Korsun and many other places – resulted directly from Hitler's orders. This idea of holding territory led to another failed plan, dubbed ""Heaven-bound Missions"", which involved fortifying even the most unimportant or insignificant of cities and the holding of these "fortresses" at all costs. Many divisions became cut off in "fortress" cities, or wasted uselessly in secondary theatres, because Hitler would not sanction retreat or voluntarily abandon any of his conquests.


title: Eastern Front (World War II)

text: Frustration at Hitler's leadership in the war was one of the factors in the attempted coup d'etat of 1944, but after the failure of the 20 July Plot Hitler considered the army and its officer corps suspect and came to rely on the "Schutzstaffel" (SS) and Nazi party members to prosecute the war.


title: Eastern Front (World War II)

text: Hitler's direction of the war ultimately proved disastrous for the German Army, though the skill, loyalty, professionalism and endurance of officers and soldiers enabled him to keep Germany fighting to the end. F. W. Winterbotham wrote of Hitler's signal to Gerd von Rundstedt to continue the attack to the west during the Battle of the Bulge:


title: Eastern Front (World War II)

text: Joseph Stalin bore the greatest responsibility for some of the disasters at the beginning of the war (for example, the Battle of Kiev (1941)), but equally deserves praise for the subsequent success of the Soviet Red Army, which depended on the unprecedentedly rapid industrialisation of the Soviet Union, which Stalin's internal policy had made the first priority throughout the 1930s.


title: Eastern Front (World War II)

text: Stalin's Great Purge of the Red Army in the late 1930s involved the legal prosecution of many of the senior command, many of whom the courts convicted and sentenced to death or to imprisonment.


title: Eastern Front (World War II)

text: The executed included Mikhail Tukhachevsky, a proponent of armoured blitzkrieg. Stalin promoted some obscurantists like Grigory Kulik who opposed the mechanisation of the army and the production of tanks, but on the other hand purged the older commanders who had held their positions since the Russian Civil War of 1917–1922, and who had experience, but were deemed "politically unreliable". This opened up their places to the promotion of many younger officers that Stalin and the NKVD regarded as in line with Stalinist politics. Many of these newly promoted commanders proved terribly inexperienced, but some later became very successful. Soviet tank-output remained the largest in the world.


title: Eastern Front (World War II)

text: From the foundation of the Red Army in 1918, political distrust of the military had led to a system of "dual command", with every commander paired with a political commissar, a member of the Communist Party of the Soviet Union. Larger units had military councils consisting of the commander, commissar and chief of staff – commissars ensured the loyalty of the commanding officers and implemented Party orders.


title: Eastern Front (World War II)

text: Following the Soviet occupation of eastern Poland, of the Baltic states and of Bessarabia and Northern Bukovina in 1939–1940, Stalin insisted on the occupation of every fold of the newly Sovietized territories; this move westward positioned troops far from their depots, in salients that left them vulnerable to encirclement. As tension heightened in spring, 1941, Stalin desperately tried not to give Hitler any provocation that Berlin could use as an excuse for a German attack; Stalin refused to allow the military to go on the alert – even as German troops gathered on the borders and German reconnaissance planes overflew installations. This refusal to take necessary action was instrumental in the destruction of major portions of the Red Air Force, lined up on its airfields, in the first days of the German-Soviet war.


title: Eastern Front (World War II)

text: At the crisis of the war, in the autumn of 1942, Stalin made many concessions to the army: the government restored unitary command by removing the Commissars from the chain of command. Order 25 of 15 January 1943 introduced shoulderboards for all ranks; this represented a significant symbolic step, since after the Russian Revolution of 1917 shoulderboards had connotations as a symbol of the old Tsarist régime. Beginning in autumn 1941, units that had proved themselves by superior performance in combat were given the traditional "Guards" title.


title: Eastern Front (World War II)

text: These concessions were combined with ruthless discipline: Order No. 227, issued on 28 July 1942, threatened commanders who retreated without orders with punishment by court-martial. Infractions by military and "politruks" were punished with transferral to penal battalions and to penal companies which carried out especially hazardous duties, such as serving as "tramplers" to clear Nazi minefields. The order stipulated to capture or shoot "cowards" and fleeing panicked troops at the rear the blocking detachments in the first three months shot 1,000 penal troops and sent 24,993 to penal battalions. By October 1942 the idea of regular blocking detachments was quietly dropped, By 29 October 1944 the units were officially disbanded.


title: Eastern Front (World War II)

text: As it became clear that the Soviet Union would win the war, Stalin ensured that propaganda always mentioned his leadership of the war; he sidelined the victorious generals and never allowed them to develop into political rivals. After the war the Soviets once again purged the Red Army (though not as brutally as in the 1930s) and demoted many successful officers (including Zhukov, Malinovsky and Koniev) to unimportant positions.


title: Eastern Front (World War II)

text: The enormous territorial gains of 1941 presented Germany with vast areas to pacify and administer. For the majority of people of the Soviet Union, the Nazi invasion was viewed as a brutal act of unprovoked aggression. While it is important to note that not all parts of Soviet society viewed the German advance in this way, the majority of the Soviet population viewed German forces as occupiers. In areas such as Estonia, Latvia, and Lithuania (which had been annexed by the Soviet Union in 1940) the "Wehrmacht" was tolerated by a relatively more significant part of the native population.


title: Eastern Front (World War II)

text: This was particularly true for the territories of Western Ukraine, recently rejoined to the Soviet Union, where the anti-Polish and anti-Soviet Ukrainian nationalist underground hoped in vain to establish the "independent state", relying on German armed force. However, Soviet society as a whole was hostile to the invading Nazis from the very start. The nascent national liberation movements among Ukrainians and Cossacks, and others were viewed by Hitler with suspicion; some, especially those from the Baltic States, were co-opted into the Axis armies and others brutally suppressed. None of the conquered territories gained any measure of self-rule.


title: Eastern Front (World War II)

text: Instead, the Nazi ideologues saw the future of the East as one of settlement by German colonists, with the natives killed, expelled, or reduced to slave labour. The cruel and brutally inhumane treatment of Soviet civilians, women, children and elderly, the daily bombings of civilian cities and towns, Nazi pillaging of Soviet villages and hamlets and unprecedented harsh punishment and treatment of civilians in general were some of the primary reasons for Soviet resistance to Nazi Germany's invasion. Indeed, the Soviets viewed Germany's invasion as an act of aggression and an attempt to conquer and enslave the local population.


title: Eastern Front (World War II)

text: Regions closer to the front were managed by military powers of the region, in other areas such as the Baltic states annexed by the USSR in 1940, Reichscommissariats were established. As a rule, the maximum in loot was extracted. In September 1941, Erich Koch was appointed to the Ukrainian Commissariat. His opening speech was clear about German policy: "I am known as a brutal dog ... Our job is to suck from Ukraine all the goods we can get hold of ... I am expecting from you the utmost severity towards the native population."


title: Eastern Front (World War II)

text: Atrocities against the Jewish population in the conquered areas began almost immediately, with the dispatch of "Einsatzgruppen" (task groups) to round up Jews and shoot them.


title: Eastern Front (World War II)

text: The massacres of Jews and other ethnic minorities were only a part of the deaths from the Nazi occupation. Many hundreds of thousands of Soviet civilians were executed, and millions more died from starvation as the Germans requisitioned food for their armies and fodder for their draft horses. As they retreated from Ukraine and Belarus in 1943–44, the German occupiers systematically applied a scorched earth policy, burning towns and cities, destroying infrastructure, and leaving civilians to starve or die of exposure. In many towns, the battles were fought within towns and cities with trapped civilians caught in the middle. Estimates of total civilian dead in the Soviet Union in the war range from seven million ("Encyclopædia Britannica") to seventeen million (Richard Overy).


title: Eastern Front (World War II)

text: The Nazi ideology and the maltreatment of the local population and Soviet POWs encouraged partisans fighting behind the front; it motivated even anti-communists or non-Russian nationalists to ally with the Soviets and greatly delayed the formation of German-allied divisions consisting of Soviet POWs (see Ostlegionen). These results and missed opportunities contributed to the defeat of the "Wehrmacht".


title: Eastern Front (World War II)

text: Vadim Erlikman has detailed Soviet losses totalling 26.5 million war related deaths. Military losses of 10.6 million include six million killed or missing in action and 3.6 million POW dead, plus 400,000 paramilitary and Soviet partisan losses. Civilian deaths totalled 15.9 million, which included 1.5 million from military actions; 7.1 million victims of Nazi genocide and reprisals; 1.8 million deported to Germany for forced labour; and 5.5 million famine and disease deaths. Additional famine deaths, which totalled one million during 1946–47, are not included here. These losses are for the entire territory of the USSR including territories annexed in 1939–40.


title: Eastern Front (World War II)

text: Belarus lost a quarter of its pre-war population, including practically all its intellectual elite. Following bloody encirclement battles, all of the present-day Belarus territory was occupied by the Germans by the end of August 1941. The Nazis imposed a brutal regime, deporting some 380,000 young people for slave labour, and killing hundreds of thousands (civilians) more. More than 600 villages like Khatyn were burned with their entire population. More than 209 cities and towns (out of 270 total) and 9,000 villages were destroyed. Himmler pronounced a plan according to which of the Belarusian population was designated for "eradication" and of the racially 'cleaner' population (blue eyes, light hair) would be allowed to serve Germans as slaves.


title: Eastern Front (World War II)

text: Some recent reports raise the number of Belarusians who perished in the war to "3 million 650 thousand people, unlike the former 2.2 million. That is to say not every fourth inhabitant but almost 40% of the pre-war Belarusian population perished (considering the present-day borders of Belarus)."


title: Eastern Front (World War II)

text: Sixty percent of Soviet POWs died during the war. By its end, large numbers of Soviet POWs, forced labourers and Nazi collaborators (including those who were forcefully repatriated by the Western Allies) went to special NKVD "filtration" camps. By 1946, 80 per cent of civilians and 20 per cent of POWs were freed, others were re-drafted, or sent to labour battalions. Two per cent of civilians and 14 per cent of the POWs were sent to the Gulag.


title: Eastern Front (World War II)

text: The official Polish government report of war losses prepared in 1947 reported 6,028,000 victims out of a population of 27,007,000 ethnic Poles and Jews; this report excluded ethnic Ukrainian and Belarusian losses.


title: Eastern Front (World War II)

text: Although the Soviet Union had not signed the Geneva Convention (1929), it is generally accepted that it considered itself bound by the provisions of the Hague convention. A month after the German invasion in 1941, an offer was made for a reciprocal adherence to Hague convention. This 'note' was left unanswered by Third Reich officials.


title: Eastern Front (World War II)

text: Soviet repressions also contributed into the Eastern Front's death toll. Mass repression occurred in the occupied portions of Poland as well as in the Baltic states and Bessarabia. Immediately after the start of the German invasion, the NKVD massacred large numbers of inmates in most of their prisons in Western Belarus and Western Ukraine, while the remainder was to be evacuated in death marches.


title: Eastern Front (World War II)

text: The Soviet victory owed a great deal to the ability of its war industry to outperform the German economy, despite the enormous loss of population and land. Stalin's five-year plans of the 1930s had resulted in the industrialisation of the Urals and central Asia. In 1941, thousands of trains evacuated critical factories and workers from Belarus and Ukraine to safe areas far from the front lines. Once these facilities were reassembled east of the Urals, production could be resumed without fear of German bombing.


title: Eastern Front (World War II)

text: As the Soviet Union's manpower reserves ran low from 1943 onwards, the great Soviet offensives had to depend more on equipment and less on the expenditure of lives. The increases in production of materiel were achieved at the expense of civilian living standards – the most thorough application of the principle of total war – and with the help of Lend-Lease supplies from the United Kingdom and the United States. The Germans, on the other hand, could rely on a large slave workforce from the conquered countries and Soviet POWs. American exports and technical expertise also enabled the Soviets to produce goods that they wouldn't have been able to on their own. For example, while the USSR was able to produce fuel of octane numbers from 70 to 74, Soviet industry only met 4% of demand for fuel of octane numbers from 90+; all aircraft produced after 1939 required fuel of the latter category. To fulfill demands, the USSR depended on American assistance, both in finished products and TEL.


title: Eastern Front (World War II)

text: Germany had far greater resources than did the USSR, and dwarfed its production in every matrix except for oil, having over five times the USSR's coal production, over three times its iron production, three times its steel production, twice its electricity production, and about 2/3 of its oil production.


title: Eastern Front (World War II)

text: German production of explosives from 1940 to 1944 was 1.595 million tons, along with 829,970 tons of powder. Consumption on all fronts during the same period was 1.493 million tons of explosives and 626,887 tons of powder. From 1941 to 1945, the USSR produced only 505,000 tons of explosives and received 105,000 tons of Lend-Lease imports. Germany outproduced the Soviet Union 3.16 to 1 in explosives tonnage.


title: Eastern Front (World War II)

text: Soviet armoured fighting vehicle production was greater than the Germans (in 1943, the Soviet Union manufactured 24,089 tanks and self-propelled guns to Germany's 19,800). The Soviets incrementally upgraded existing designs, and simplified and refined manufacturing processes to increase production, and were helped by a mass infusion of harder to produce goods such as aviation fuel, machine tools, trucks, and high-explosives from Lend-Lease, allowing them to concentrate on a few key industries. Meanwhile, Germany had been cut off from foreign trade for years by the time it invaded the USSR, was in the middle of two extended and costly theatres at air and sea that further limited production (Battle of the Atlantic and Defence of the Reich), and was forced to devote a large segment of its expenditures to goods the Soviets could cut back on (such as trucks) or which would never even be used against the Soviets (such as ships). Naval vessels alone constituted 10–15% of Germany's war expenditures from 1940 to 1944 depending on the year, while armoured vehicles by comparison were only 5–8%.


title: Eastern Front (World War II)

text: Soviet production and upkeep was assisted by the Lend-Lease program from the United States and the United Kingdom. In the course of the war the US supplied $11 billion of materiel through Lend-Lease. This included 400,000 trucks, 12,000 armoured vehicles (including 7,000 tanks), 11,400 aircraft and 1.75 million tons of food. The British supplied aircraft including 3,000 Hurricanes and 4,000 other aircraft during the war. Five thousand tanks were provided by the British and Canada. Total British supplies were about four million tons. Germany on the other hand had the resources of conquered Europe at its disposal; those numbers are however not included into the tables above, such as production in France, Belgium, the Netherlands, Denmark, and so on.


title: Eastern Front (World War II)

text: After the defeat at Stalingrad, Germany geared completely towards a war economy, as expounded in a speech given by Joseph Goebbels (the Nazi propaganda minister), in the Berlin Sportpalast, increasing production in subsequent years under Albert Speer's (the "Reich" armaments minister) direction, despite the intensifying Allied bombing campaign.


title: Eastern Front (World War II)

text: The fighting involved millions of Axis and Soviet troops along the broadest land front in military history. It was by far the deadliest single theatre of the European portion of World War II with up to 8.7 to 10 million military deaths on the Soviet side (although, depending on the criteria used, casualties in the Far East theatre may have been similar in number). Axis military deaths were 5 million of which around 4,000,000 were German deaths.


title: Eastern Front (World War II)

text: Included in this figure of German losses is the majority of the 2 million German military personnel listed as missing or unaccounted for after the war. Rüdiger Overmans states that it seems entirely plausible, while not provable, that one half of these men were killed in action and the other half died in Soviet custody. Official OKW Casualty Figures list 65% of Heer killed/missing/captured as being lost on the Eastern Front from 1 September 1939, to 1 January 1945 (four months and a week before the conclusion of the war), with front not specified for losses of the Kriegsmarine and Luftwaffe.


title: Eastern Front (World War II)

text: Estimated civilian deaths range from about 14 to 17 million. Over 11.4 million Soviet civilians within pre-1939 Soviet borders were killed, and another estimated 3.5 million civilians were killed in the annexed territories. The Nazis exterminated one to two million Soviet Jews (including the annexed territories) as part of the Holocaust. Soviet and Russian historiography often uses the term "irretrievable casualties". According to the Narkomat of Defence order (No. 023, 4 February 1944), the irretrievable casualties include killed, missing, those who died due to war-time or subsequent wounds, maladies and chilblains and those who were captured.


title: Eastern Front (World War II)

text: The huge death toll was attributed to several factors, including brutal mistreatment of POWs and captured partisans, the large deficiency of food and medical supplies in Soviet territories, and atrocities committed mostly by the Germans against the civilian population. The multiple battles and the use of scorched earth tactics destroyed agricultural land, infrastructure, and whole towns, leaving much of the population homeless and without food.


title: Eastern Front (World War II)

text: Based on Soviet sources Krivosheev put German losses on the Eastern Front from 1941 to 1945 at 6,923,700 men: including killed in action, died of wounds or disease and reported missing and presumed dead4,137,100, taken prisoner 2,571,600 and 215,000 dead among Soviet volunteers in the Wehrmacht. Deaths of POW were 450,600 including 356,700 in NKVD camps and 93,900 in transit.


title: Eastern Front (World War II)

text: According to a report prepared by the General Staff of the Army issued in December 1944, materiel losses in the East from the period of 22 June 1941 until November 1944 stood at 33,324 armoured vehicles of all types (tanks, assault guns, tank destroyers, self-propelled guns and others). Paul Winter, "Defeating Hitler", states "these figures are undoubtedly too low". According to Soviet claims, the Germans lost 42,700 tanks, tank destroyers, self-propelled guns and assault guns on the Eastern front. Overall, Germany produced 3,024 reconnaissance vehicles, 2,450 other armoured vehicles, 21,880 armoured personnel carriers, 36,703 semi-tracked tractors and 87,329 semi-tracked trucks, estimated 2/3 were lost on the Eastern Front.


title: Eastern Front (World War II)

text: The Soviets lost 96,500 tanks, tank destroyers, self-propelled guns and assault guns, as well as 37,600 other armoured vehicles (such as armoured cars and semi-tracked trucks) for a total of 134,100 armoured vehicles lost.


title: Eastern Front (World War II)

text: The Soviets also lost 102,600 aircraft (combat and non-combat causes), including 46,100 in combat. According to Soviet claims, the Germans lost 75,700 aircraft on the Eastern front.


title: Eastern Front (World War II)

text: Polish Armed Forces in the East, initially consisting of Poles from Eastern Poland or otherwise in the Soviet Union in 1939–1941, began fighting alongside the Red Army in 1943, and grew steadily as more Polish territory was liberated from the Nazis in 1944–1945.


title: Eastern Front (World War II)

text: When the Axis countries of Central Europe were occupied by the Soviets, they changed sides and declared war on Germany (see Allied Commissions).


title: Eastern Front (World War II)

text: Some Soviet citizens would side with the Germans and join Andrey Vlasov's Russian Liberation Army, Ukrainian Liberation Army, Georgian Legion and other "Ostlegionen" units. Most of those who joined were Soviet POWs. These foreign volunteers in the Wehrmacht were primarily used in the Eastern Front but some were assigned to guard the beaches of Normandy. The other main group of men joining the German army were citizens of the Baltic countries annexed by the Soviet Union in 1940 or from Western Ukraine. They fought in their own Waffen-SS units, including the Latvian Legion and the Galicia Division.


title: Eastern Front (World War II)

text: Hitler's notorious Commissar Order called for Soviet political commissars, who were responsible for ensuring that Red Army units remained politically reliable, to be summarily shot when identified amongst captured troops. Axis troops who captured Red Army soldiers frequently shot them in the field or shipped them to concentration camps to be used as forced labourers or killed. Additionally, millions of Soviet civilians were captured as POWs and treated in the same manner. It is estimated that between 2.25 and 3.3 million Soviet POWs died in Nazi custody, out of 5.25–5.7 million. This figure represents a total of 45–57% of all Soviet POWs and may be contrasted with 8,300 out of 231,000 British and U.S. prisoners, or 3.6%. About 5% of the Soviet prisoners who died were of Jewish ethnicity.


title: Antikythera mechanism

text: The Antikythera mechanism ( ) is an Ancient Greek hand-powered orrery, described as the oldest example of an analogue computer used to predict astronomical positions and eclipses decades in advance. It could also be used to track the four-year cycle of athletic games which was similar to an Olympiad, the cycle of the ancient Olympic Games.


title: Antikythera mechanism

text: This artefact was among wreckage retrieved from a shipwreck off the coast of the Greek island Antikythera in 1901. On 17 May 1902, it was identified as containing a gear by archaeologist Valerios Stais. The device, housed in the remains of a wooden-framed case of (uncertain) overall size , was found as one lump, later separated into three main fragments which are now divided into 82 separate fragments after conservation efforts. Four of these fragments contain gears, while inscriptions are found on many others. The largest gear is approximately in diameter and originally had 223 teeth.


title: Antikythera mechanism

text: In 2008, a team led by Mike Edmunds and Tony Freeth at Cardiff University used modern computer x-ray tomography and high resolution surface scanning to image inside fragments of the crust-encased mechanism and read the faintest inscriptions that once covered the outer casing of the machine. This suggests that it had 37 meshing bronze gears enabling it to follow the movements of the Moon and the Sun through the zodiac, to predict eclipses and to model the irregular orbit of the Moon, where the Moon's velocity is higher in its perigee than in its apogee. This motion was studied in the 2nd century BC by astronomer Hipparchus of Rhodes, and it is speculated that he may have been consulted in the machine's construction. There is speculation that a portion of the mechanism is missing and it also calculated the positions of the five classical planets.


title: Antikythera mechanism

text: The instrument is believed to have been designed and constructed by Greek scientists and has been variously dated to about 87 BC, or between 150 and 100 BC, or to 205 BC. In any case, it must have been constructed before the shipwreck, which has been dated by multiple lines of evidence to approximately 70–60 BC. In 2022 researchers proposed that the initial calibration date of the machine (not its actual date of construction) could have been 23 December 178 BC. Other experts propose 204 BC as a more likely calibration date. Machines with similar complexity did not appear again until the astronomical clocks of Richard of Wallingford and Giovanni de' Dondi in the fourteenth century.


title: Antikythera mechanism

text: All known fragments of the Antikythera mechanism are now kept at the National Archaeological Museum, Athens, along with a number of artistic reconstructions and replicas to demonstrate how it may have looked and worked.


title: Antikythera mechanism

text: Captain Dimitrios Kontos () and a crew of sponge divers from Symi island discovered the Antikythera shipwreck in early 1900, and recovered artefacts during the first expedition with the Hellenic Royal Navy, in 1900–01. This wreck of a Roman cargo ship was found at a depth of off Point Glyphadia on the Greek island of Antikythera. The team retrieved numerous large objects, including bronze and marble statues, pottery, unique glassware, jewellery, coins, and the mechanism. The mechanism was retrieved from the wreckage in 1901, most probably that July. It is not known how the mechanism came to be on the cargo ship, but it has been suggested that it was being taken from Rhodes to Rome, together with other looted treasure, to support a triumphal parade being staged by Julius Caesar.


title: Antikythera mechanism

text: All of the items retrieved from the wreckage were transferred to the National Museum of Archaeology in Athens for storage and analysis. The mechanism appeared to be a lump of corroded bronze and wood; it went unnoticed for two years, while museum staff worked on piecing together more obvious treasures, such as the statues. Upon removal from seawater, the mechanism was not treated, resulting in deformational changes.


title: Antikythera mechanism

text: On 17 May 1902, archaeologist Valerios Stais found that one of the pieces of rock had a gear wheel embedded in it. He initially believed that it was an astronomical clock, but most scholars considered the device to be prochronistic, too complex to have been constructed during the same period as the other pieces that had been discovered. Investigations into the object were dropped until British science historian and Yale University professor Derek J. de Solla Price became interested in it in 1951. In 1971, Price and Greek nuclear physicist Charalampos Karakalos made X-ray and gamma-ray images of the 82 fragments. Price published a 70-page paper on their findings in 1974.


title: Antikythera mechanism

text: Two other searches for items at the Antikythera wreck site in 2012 and 2015 have yielded art objects and a second ship which may or may not be connected with the treasure ship on which the mechanism was found. Also found was a bronze disc, embellished with the image of a bull. The disc has four "ears" which have holes in them, and it was thought by some that it may have been part of the Antikythera mechanism, as a "cog wheel". There appears to be little evidence that it was part of the mechanism; it is more likely that the disc was a bronze decoration on a piece of furniture.


title: Antikythera mechanism

text: The Antikythera mechanism is generally referred to as the first known analogue computer. The quality and complexity of the mechanism's manufacture suggests that it must have had undiscovered predecessors during the Hellenistic period. Its construction relied on theories of astronomy and mathematics developed by Greek astronomers during the second century BC, and it is estimated to have been built in the late second century BC or the early first century BC.


title: Antikythera mechanism

text: In 2008, continued research by the Antikythera Mechanism Research Project suggested that the concept for the mechanism may have originated in the colonies of Corinth, since they identified the calendar on the Metonic Spiral as coming from Corinth or one of its colonies in northwest Greece or Sicily. Syracuse was a colony of Corinth and the home of Archimedes, and the Antikythera Mechanism Research project argued in 2008 that it might imply a connection with the school of Archimedes. It was demonstrated in 2017 that the calendar on the Metonic Spiral is of the Corinthian type but cannot be that of Syracuse. Another theory suggests that coins found by Jacques Cousteau at the wreck site in the 1970s date to the time of the device's construction, and posits that its origin may have been from the ancient Greek city of Pergamon, home of the Library of Pergamum. With its many scrolls of art and science, it was second in importance only to the Library of Alexandria during the Hellenistic period.


title: Antikythera mechanism

text: The ship carrying the device also contained vases in the Rhodian style, leading to a hypothesis that it was constructed at an academy founded by Stoic philosopher Posidonius on that Greek island. Rhodes was a busy trading port in antiquity and a centre of astronomy and mechanical engineering, home to astronomer Hipparchus, who was active from about 140 BC to 120 BC. The mechanism uses Hipparchus' theory for the motion of the Moon, which suggests the possibility that he may have designed it or at least worked on it. It has recently been argued that the astronomical events on the Parapegma of the Antikythera mechanism work best for latitudes in the range of 33.3–37.0 degrees north; the island of Rhodes is located between the latitudes of 35.85 and 36.50 degrees north.


title: Antikythera mechanism

text: In 2014, a study by Carman and Evans argued for a new dating of approximately 200 BC based on identifying the start-up date on the Saros Dial as the astronomical lunar month that began shortly after the new moon of 28 April 205 BC. According to Carman and Evans, the Babylonian arithmetic style of prediction fits much better with the device's predictive models than the traditional Greek trigonometric style. A study by Paul Iversen published in 2017 reasons that the prototype for the device was from Rhodes, but that this particular model was modified for a client from Epirus in northwestern Greece; Iversen argues that it was probably constructed no earlier than a generation before the shipwreck, a date supported also by Jones.


title: Antikythera mechanism

text: Further dives were undertaken in 2014 and 2015, in the hope of discovering more of the mechanism. A five-year programme of investigations began in 2014 and ended in October 2019, with a new five-year session starting in May 2020.


title: Antikythera mechanism

text: The original mechanism apparently came out of the Mediterranean as a single encrusted piece. Soon afterwards it fractured into three major pieces. Other small pieces have broken off in the interim from cleaning and handling, and others were found on the sea floor by the Cousteau expedition. Other fragments may still be in storage, undiscovered since their initial recovery; Fragment F was discovered in that way in 2005. Of the 82 known fragments, seven are mechanically significant and contain the majority of the mechanism and inscriptions. There are also 16 smaller parts that contain fractional and incomplete inscriptions.


title: Antikythera mechanism

text: Many of the smaller fragments that have been found contain nothing of apparent value, but a few have inscriptions on them. Fragment 19 contains significant back door inscriptions including one reading "... 76 years ..." which refers to the Callippic cycle. Other inscriptions seem to describe the function of the back dials. In addition to this important minor fragment, 15 further minor fragments have remnants of inscriptions on them.


title: Antikythera mechanism

text: Information on the specific data gleaned from the ruins by the latest inquiries is detailed in the supplement to Freeth's 2006 "Nature" article.


title: Antikythera mechanism

text: On the front face of the mechanism, there is a fixed ring dial representing the ecliptic, the twelve zodiacal signs marked off with equal 30-degree sectors. This matched with the Babylonian custom of assigning one twelfth of the ecliptic to each zodiac sign equally, even though the constellation boundaries were variable. Outside that dial is another ring which is rotatable, marked off with the months and days of the Sothic Egyptian calendar, twelve months of 30 days plus five intercalary days. The months are marked with the Egyptian names for the months transcribed into the Greek alphabet. The first task, then, is to rotate the Egyptian calendar ring to match the current zodiac points. The Egyptian calendar ignored leap days, so it advanced through a full zodiac sign in about 120 years.


title: Antikythera mechanism

text: The mechanism was operated by turning a small hand crank (now lost) which was linked via a crown gear to the largest gear, the four-spoked gear visible on the front of fragment A, gear b1. This moved the date pointer on the front dial, which would be set to the correct Egyptian calendar day. The year is not selectable, so it is necessary to know the year currently set, or by looking up the cycles indicated by the various calendar cycle indicators on the back in the Babylonian ephemeris tables for the day of the year currently set, since most of the calendar cycles are not synchronous with the year. The crank moves the date pointer about 78 days per full rotation, so hitting a particular day on the dial would be easily possible if the mechanism were in good working condition. The action of turning the hand crank would also cause all interlocked gears within the mechanism to rotate, resulting in the simultaneous calculation of the position of the Sun and Moon, the moon phase, eclipse, and calendar cycles, and perhaps the locations of planets.


title: Antikythera mechanism

text: The operator also had to be aware of the position of the spiral dial pointers on the two large dials on the back. The pointer had a "follower" that tracked the spiral incisions in the metal as the dials incorporated four and five full rotations of the pointers. When a pointer reached the terminal month location at either end of the spiral, the pointer's follower had to be manually moved to the other end of the spiral before proceeding further.


title: Antikythera mechanism

text: The front dial has two concentric circular scales. The inner scale marks the Greek signs of the zodiac, with division in degrees. The outer scale, which is a moveable ring that sits flush with the surface and runs in a channel, is marked off with what appear to be days and has a series of corresponding holes beneath the ring in the channel.


title: Antikythera mechanism

text: Since the discovery of the mechanism, this outer ring has been presumed to represent the 365-day Egyptian calendar, but recent research challenges this presumption and gives evidence it is most likely divided into 354 intervals.


title: Antikythera mechanism

text: If one subscribes to the 365-day presumption, it is recognized the mechanism predates the Julian calendar reform, but the Sothic and Callippic cycles had already pointed to a 365 1⁄4-day solar year, as seen in Ptolemy III's attempted calendar reform of 238 BC. The dials are not believed to reflect his proposed leap day (Epag. 6), but the outer calendar dial may be moved against the inner dial to compensate for the effect of the extra quarter-day in the solar year by turning the scale backward one day every four years.


title: Antikythera mechanism

text: If one subscribes to the 354-day evidence, the most likely interpretation is that the ring is a manifestation of a 354-day lunar calendar. Given the era of the mechanism's presumed construction and the presence of Egyptian month names, it is possibly the first example of the Egyptian civil-based lunar calendar proposed by Richard Anthony Parker in 1950. The lunar calendar's purpose was to serve as a day-to-day indicator of successive lunations, and would also have assisted with the interpretation of the Lunar phase pointer, and the Metonic and Saros dials. Undiscovered gearing, synchronous with the rest of the Metonic gearing of the mechanism, is implied to drive a pointer around this scale. Movement and registration of the ring relative to the underlying holes served to facilitate both a one-in-76-year Callippic cycle correction, as well as convenient lunisolar intercalation.


title: Antikythera mechanism

text: The dial also marks the position of the Sun on the ecliptic corresponds to the current date in the year. The orbits of the Moon and the five planets known to the Greeks are close enough to the ecliptic to make it a convenient reference for defining their positions as well.


title: Antikythera mechanism

text: The following three Egyptian months are inscribed in Greek letters on the surviving pieces of the outer ring:


title: Antikythera mechanism

text: The other months have been reconstructed; some reconstructions of the mechanism omit the five days of the Egyptian intercalary month. The Zodiac dial contains Greek inscriptions of the members of the zodiac, which is believed to be adapted to the tropical month version rather than the sidereal:


title: Antikythera mechanism

text: Also on the zodiac dial are a number of single characters at specific points (see reconstruction here:). They are keyed to a "parapegma", a precursor of the modern day almanac inscribed on the front face above and beneath the dials. They mark the locations of longitudes on the ecliptic for specific stars. The "parapegma" above the dials reads (square brackets indicate inferred text):


title: Antikythera mechanism

text: At least two pointers indicated positions of bodies upon the ecliptic. A lunar pointer indicated the position of the Moon, and a mean Sun pointer also was shown, perhaps doubling as the current date pointer. The Moon position was not a simple mean Moon indicator that would indicate movement uniformly around a circular orbit; it approximated the acceleration and deceleration of the Moon's elliptical orbit, through the earliest extant use of epicyclic gearing.


title: Antikythera mechanism

text: It also tracked the precession of the elliptical orbit around the ecliptic in an 8.88-year cycle. The mean Sun position is, by definition, the current date. It is speculated that since such pains were taken to get the position of the Moon correct, then there also was likely to have been a "true sun" pointer in addition to the mean Sun pointer likewise, to track the elliptical anomaly of the Sun (the orbit of Earth around the Sun), but there is no evidence of it among the ruins of the mechanism found to date. Similarly, neither is there the evidence of planetary orbit pointers for the five planets known to the Greeks among the ruins. See Proposed planet indication gearing schemes below.


title: Antikythera mechanism

text: Mechanical engineer Michael Wright demonstrated that there was a mechanism to supply the lunar phase in addition to the position. The indicator was a small ball embedded in the lunar pointer, half-white and half-black, which rotated to show the phase (new, first quarter, half, third quarter, full, and back) graphically. The data to support this function is available given the Sun and Moon positions as angular rotations; essentially, it is the angle between the two, translated into the rotation of the ball. It requires a differential gear, a gearing arrangement that sums or differences two angular inputs.


title: Antikythera mechanism

text: In July 2008, scientists reported new findings in the journal "Nature" showing that the mechanism not only tracked the Metonic calendar and predicted solar eclipses, but also calculated the timing of several panhellenic athletic games, including the Ancient Olympic Games. Inscriptions on the instrument closely match the names of the months that are used on calendars from Epirus in northwestern Greece and with the island of Corfu, which in antiquity was known as Corcyra.


title: Antikythera mechanism

text: On the back of the mechanism, there are five dials: the two large displays, the Metonic and the Saros, and three smaller indicators, the so-called Olympiad Dial, which has recently been renamed the Games dial as it did not track Olympiad years (the four-year cycle it tracks most closely is the Halieiad), the Callippic, and the Exeligmos.


title: Antikythera mechanism

text: The Metonic Dial is the main upper dial on the rear of the mechanism. The Metonic cycle, defined in several physical units, is 235 synodic months, which is very close (to within less than 13 one-millionths) to 19 tropical years. It is therefore a convenient interval over which to convert between lunar and solar calendars. The Metonic dial covers 235 months in five rotations of the dial, following a spiral track with a follower on the pointer that keeps track of the layer of the spiral. The pointer points to the synodic month, counted from new moon to new moon, and the cell contains the Corinthian month names.


title: Antikythera mechanism

text: Thus, setting the correct solar time (in days) on the front panel indicates the current lunar month on the back panel, with resolution to within a week or so.


title: Antikythera mechanism

text: Based on the fact that the calendar month names are consistent with all the evidence of the Epirote calendar and that the Games dial mentions the very minor Naa games of Dodona (in Epirus), it has recently been argued that the calendar on the Antikythera Mechanism is likely to be the Epirote calendar, and that this calendar was probably adopted from a Corinthian colony in Epirus, possibly Ambracia. It has also been argued that the first month of the calendar, Phoinikaios, was ideally the month in which the autumn equinox fell, and that the start-up date of the calendar began shortly after the astronomical new moon of 23 August 205 BC.


title: Antikythera mechanism

text: The Games dial is the right secondary upper dial; it is the only pointer on the instrument that travels in a counter-clockwise direction as time advances. The dial is divided into four sectors, each of which is inscribed with a year indicator and the name of two Panhellenic Games: the "crown" games of Isthmia, Olympia, Nemea, and Pythia; and two lesser games: Naa (held at Dodona), and the sixth and final set of Games recently deciphered as the Halieia of Rhodes. The inscriptions on each one of the four divisions are:


title: Antikythera mechanism

text: The Saros dial is the main lower spiral dial on the rear of the mechanism. The Saros cycle is 18 years and days long (6585.333... days), which is very close to 223 synodic months (6585.3211 days). It is defined as the cycle of repetition of the positions required to cause solar and lunar eclipses, and therefore, it could be used to predict them—not only the month, but the day and time of day. Note that the cycle is approximately 8 hours longer than an integer number of days. Translated into global spin, that means an eclipse occurs not only eight hours later, but one-third of a rotation farther to the west. Glyphs in 51 of the 223 synodic month cells of the dial specify the occurrence of 38 lunar and 27 solar eclipses. Some of the abbreviations in the glyphs read:


title: Antikythera mechanism

text: The glyphs show whether the designated eclipse is solar or lunar, and give the day of the month and hour. Solar eclipses may not be visible at any given point, and lunar eclipses are visible only if the moon is above the horizon at the appointed hour. In addition, the inner lines at the cardinal points of the Saros dial indicate the start of a new full moon cycle. Based on the distribution of the times of the eclipses, it has recently been argued that the start-up date of the Saros dial was shortly after the astronomical new moon of 28 April 205 BC.


title: Antikythera mechanism

text: The Exeligmos Dial is the secondary lower dial on the rear of the mechanism. The Exeligmos cycle is a 54-year triple Saros cycle that is 19,756 days long. Since the length of the Saros cycle is to a third of a day (namely, 6,585 days plus 8 hours), a full Exeligmos cycle returns the counting to an integral number of days, as reflected in the inscriptions. The labels on its three divisions are:


title: Antikythera mechanism

text: Thus the dial pointer indicates how many hours must be added to the glyph times of the Saros dial in order to calculate the exact eclipse times.


title: Antikythera mechanism

text: The mechanism has a wooden casing with a front and a back door, both containing inscriptions. The back door appears to be the "instruction manual". On one of its fragments is written "76 years, 19 years" representing the Callippic and Metonic cycles. Also written is "223" for the Saros cycle. On another one of its fragments, it is written "on the spiral subdivisions 235" referring to the Metonic dial.


title: Antikythera mechanism

text: The mechanism is remarkable for the level of miniaturisation and the complexity of its parts, which is comparable to that of fourteenth-century astronomical clocks. It has at least 30 gears, although mechanism expert Michael Wright has suggested that the Greeks of this period were capable of implementing a system with many more gears.


title: Antikythera mechanism

text: There is much debate as to whether the mechanism had indicators for all five of the planets known to the ancient Greeks. No gearing for such a planetary display survives and all gears are accounted for—with the exception of one 63-toothed gear (r1) otherwise unaccounted for in fragment D.


title: Antikythera mechanism

text: Fragment D is a small quasi-circular constriction that, according to Xenophon Moussas, has a gear inside a somewhat larger hollow gear. The inner gear moves inside the outer gear reproducing an epicyclical motion that, with a pointer, gives the position of planet Jupiter. The inner gear is numbered 45, "ME" in Greek and the same number is written on two surfaces of this small cylindrical box.


title: Antikythera mechanism

text: The purpose of the front face was to position astronomical bodies with respect to the celestial sphere along the ecliptic, in reference to the observer's position on the Earth. That is irrelevant to the question of whether that position was computed using a heliocentric or geocentric view of the Solar System; either computational method should, and does, result in the same position (ignoring ellipticity), within the error factors of the mechanism.


title: Antikythera mechanism

text: The epicyclic Solar System of Ptolemy (–)—still 300 years in the future from the apparent date of the mechanism—carried forward with more epicycles, and was more accurate predicting the positions of planets than the view of Copernicus (1473–1543), until Kepler (1571–1630) introduced the possibility that orbits are ellipses.


title: Antikythera mechanism

text: Evans et al. suggest that to display the mean positions of the five classical planets would require only 17 further gears that could be positioned in front of the large driving gear and indicated using individual circular dials on the face.


title: Antikythera mechanism

text: Tony Freeth and Alexander Jones have modelled and published details of a version using several gear trains mechanically similar to the lunar anomaly system allowing for indication of the positions of the planets as well as synthesis of the Sun anomaly. Their system, they claim, is more authentic than Wright's model as it uses the known skill sets of the Greeks of that period and does not add excessive complexity or internal stresses to the machine.