Operation Barbarossa · Chapter 1 of 9
A Pact, a Plan and a War of Annihilation
The invasion grew from a deliberate choice: destroy the Soviet state, seize its resources and remake eastern Europe through racial conquest.
The agreement that bought time
On 23 August 1939, Nazi Germany and the Soviet Union signed a nonaggression agreement. The public promise concealed a secret division of eastern Europe into spheres of influence. Germany attacked Poland on 1 September; the Soviet Union entered from the east on 17 September. The pact helped the two dictatorships dismantle Poland and enabled Germany to fight in the west without an immediate Soviet war.
For Hitler, cooperation did not cancel the ambition to conquer in the east. It postponed the confrontation. This distinction matters when reading the photographs of diplomatic handshakes: the ceremony documents an agreement, but it does not prove that the regimes had reconciled their long-term aims. The pact was an arrangement between enemies who expected to benefit from it. Those benefits were purchased at the expense of people whose countries and lives were being divided without their consent.
Sources: United States Holocaust Memorial Museum — german soviet pact
A frontier already remade by force
The frontier crossed in 1941 was itself a result of recent conquest. Soviet occupation had extended into eastern Poland and the Baltic states; war with Finland had also altered the northern border. Many people encountered by the invading forces had experienced arrests, deportations or the loss of their country’s independence under Soviet rule. Those experiences shaped the invasion’s local setting without making everyone respond to it in the same way.
The phrase “invasion of Russia” obscures this geography. The Soviet Union contained several republics, and the opening campaign crossed lands with distinct national histories. Reading it only as a contest between two dictators leaves out the people whose homes stood between their armies.
Sources: United States Holocaust Memorial Museum — world war ii in depth
A short war, written into the order
Hitler signed Directive No. 21 on 18 December 1940. It instructed the armed forces to prepare to defeat the Soviet Union rapidly while the war against Britain continued. The order called for the destruction of Soviet forces in the western border regions, before they could withdraw into the interior. It also envisaged advances on a continental scale. The plan depended upon producing political and military collapse before distance became an overwhelming burden.
The directive is a valuable primary source because it reveals the assumption at the heart of the operation. It does not merely identify a direction of travel. It asks the reader to imagine an enemy that will cease to function after its first armies are broken. Read that assumption beside the later campaigns at Smolensk and Moscow: the same state kept mobilizing forces after the losses that German planning had expected to be decisive.
Conquest meant more than changing a frontier
The proposed war was ideological and racial as well as military. Nazi leaders sought land for German settlement and the destruction of the Soviet political system. Their antisemitic vision identified Jews with an invented, supposedly unified Bolshevik enemy. Planning for mass killing and ruthless exploitation accompanied operational preparations. These were policies, rather than explanations invented after the invading army encountered resistance.
This changes the way the campaign must be told. An arrow drawn across a map also passes through farms, streets, Jewish communities and places of imprisonment. What happened behind the front cannot be detached from the reasons the front was opened. German military and police authorities arranged for killing units to operate in the occupied territories; exploitation plans accepted mass civilian starvation. The invasion therefore carried a catastrophe for civilians within its design, before any argument about mud, railways or winter could arise.
Sources: United States Holocaust Memorial Museum — invasion of the soviet union june 1941
Stalin misjudged the danger
Stalin received warnings of a German attack but did not respond in a way that prepared his forces adequately for the assault that came. He sought time and distrusted reports that appeared to invite a confrontation. The error was especially serious because the Red Army was undergoing rapid expansion and reorganization. New formations on paper did not automatically become experienced, coordinated fighting units in the field.
The purges of the officer corps had deepened these weaknesses. University of Chicago researchers, working with biographical and archival evidence, find that the Great Terror removed large numbers of experienced commanders and damaged military performance. Yet neither repression nor surprise makes Soviet defeat inevitable in retrospect. They help explain why the opening was so disastrous. The separate question—why the Soviet Union survived those disasters—requires following what soldiers, workers and civilians did during the months that followed.
Sources: origins.osu.edu — operation barbarossa · bfi.uchicago.edu — the anatomy of the great terror a quantitative analysis of the 1937 38 purges in the red army