History of Poland (1939–1945)
Period of Polish history during World War II / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about History of Poland (1939–1945)?
Summarize this article for a 10 year old
The history of Poland from 1939 to 1945 encompasses primarily the period from the invasion of Poland by Nazi Germany and the Soviet Union to the end of World War II. Following the German–Soviet non-aggression pact, Poland was invaded by Nazi Germany on 1 September 1939 and by the Soviet Union on 17 September. The campaigns ended in early October with Germany and the Soviet Union dividing and annexing the whole of Poland. After the Axis attack on the Soviet Union in the summer of 1941, the entirety of Poland was occupied by Germany, which proceeded to advance its racial and genocidal policies across Poland.
Under the two occupations, Polish citizens suffered enormous human and material losses. According to the Institute of National Remembrance estimates, about 5.6 million Polish citizens died due to the German occupation and about 150,000 due to the Soviet occupation.[1] The Jews were singled out by the Germans for a quick and total annihilation and about 90 percent of Polish Jews (nearly three million) were murdered as part of the Holocaust. Jews, Poles, Romani people and prisoners of many other ethnicities were killed en masse at Nazi extermination camps, such as Auschwitz, Treblinka and Sobibór. Ethnic Poles were subjected to both Nazi German and Soviet persecution. The Germans killed an estimated two million ethnic Poles. Generalplan Ost contemplated turning the remaining majority of Poles into slave labor and annihilating those perceived as "undesirable". Ethnic cleansing and massacres of Poles and to a lesser extent Ukrainians were perpetrated in western Ukraine (prewar Polish Kresy) from 1943. The Ukrainian Insurgent Army participated.
In September 1939, the Polish government officials sought refuge in Romania, but their subsequent internment there prevented the intended continuation abroad as the government of Poland. General Władysław Sikorski, a former prime minister, arrived in France, where a replacement Polish Government-in-Exile was soon formed. After the fall of France, the government was evacuated to Britain. The Polish armed forces were reconstituted and fought alongside the Western Allies in France, Britain and elsewhere. A Resistance movement began organizing in Poland in 1939, soon after the invasions. Its largest military component was a part of the Polish Underground State network and became known as the Home Army. The whole clandestine structure was formally directed by the Government-in-Exile through its delegation resident in Poland. There were also peasant, right-wing, leftist, Jewish and Soviet partisan organizations. Among the failed anti-German uprisings were the Warsaw Ghetto Uprising and the Warsaw Uprising. The aim of the Warsaw Uprising was to prevent domination of Poland by the Soviet Union.
In order to cooperate with the Soviet Union after Operation Barbarossa, Sikorski, an important war ally of the West, negotiated in Moscow with Joseph Stalin and they agreed to form a Polish army in the Soviet Union, intended to fight on the Eastern Front alongside the Soviets. The "Anders' Army" was instead taken to the Middle East in 1942 and then to Italy. Further efforts to continue the Polish-Soviet cooperation had failed because of disagreements over borders, the discovery of the Katyn massacre of Polish POWs perpetrated by the Soviets, and the death of General Sikorski. Afterwards, in a process seen by many Poles as a Western betrayal, the Polish Government-in-Exile gradually ceased being a recognized partner in the Allied coalition.
Stalin pursued a strategy of facilitating the formation of a Polish government independent of (and in opposition to) the exile government in London by empowering the Polish communists. Among Polish communist organizations established during the war were the Polish Workers' Party in occupied Poland and the Union of Polish Patriots in Moscow. In late 1943 a new Polish army was formed in the Soviet Union to fight together with the Soviets. At the same time Stalin worked on co-opting the Western Allies (the United States led by President Franklin D. Roosevelt and the United Kingdom led by Prime Minister Winston Churchill), who, in terms of practical implementations, conformed to Stalin's views on Poland's borders and future government. The fate of Poland was determined in a series of negotiations that included the conferences in Tehran, Yalta, and Potsdam. In 1944, the Polish Government-in-Exile approved and the underground in Poland undertook unilateral political and military actions aimed at establishing an independent Polish authority, but the efforts were thwarted by the Soviets. The Polish communists founded the State National Council in 1943/44 in occupied Warsaw and the Polish Committee of National Liberation in July 1944 in Lublin, after the arrival of the Soviet army. The Soviet Union kept the eastern half of prewar Poland, granting Poland instead the greater southern portion of the eliminated German East Prussia and shifting the country west to the Oder–Neisse line, at the expense of Germany.
Rearmament and first annexations
After the death of Józef Piłsudski in 1935, the Sanation government of his political followers, along with President Ignacy Mościcki, embarked on a military reform and rearmament of the Polish Army in the face of the changing political climate in Europe. Thanks in part to a financial loan from France, Poland's new Central Industrial Region participated in the project from 1936 in an attempt to catch-up with the advanced weapons development by Poland's richer neighbors. Foreign Minister Józef Beck continued to resist the growing pressure on Poland from the West to cooperate with the Soviet Union in order to contain Germany.[2][3][4] Against the rapidly growing German military force, Poland not only possessed no comparable quantity of technical resources, but also lacked the knowledge and concepts of developing modern warfare.[5]
Also in 1935, Adolf Hitler announced and expanded the hitherto secret German rearmament contrary to the provisions of the Treaty of Versailles – the foundation of the post-World War I international order. Unable to prevent Hitler's remilitarization of the Rhineland, the United Kingdom and France also pursued rearmament. Meanwhile, German territorial expansion into central Europe began in earnest with the Anschluss of Austria in March 1938. Poland dispatched special diversionary groups to the disputed Zaolzie (Czech Silesia) area in hope of expediting the breakup of Czechoslovakia and regaining the territory. The Munich Agreement of 30 September 1938 was followed by Germany's incorporation of the Sudetenland. Faced with the threat of a total annexation of Czechoslovakia, the Western Powers endorsed the German partition of the country.[6][7]
Poland insistently sought a great power status but was not invited to participate in the Munich conference. Minister Beck, disappointed with the lack of recognition, issued an ultimatum on the day of the Munich Agreement to the government of Czechoslovakia, demanding an immediate return to Poland of the contested Zaolzie border region. The distressed Czechoslovak government complied, and Polish military units took over the area. The move was negatively received in both the West and the Soviet Union, and it contributed to the worsening of the geopolitical situation of Poland. In November, the Polish government also annexed a small border region in dispute with the newly autonomous state of Slovakia and gave its support to Hungary's expansion into Carpatho-Ukraine, located within the now federal Czechoslovakia.[7][8][9]
Aftermath of the Munich Agreement
The Munich Agreement of 1938 did not last for long. In March 1939 the German occupation of Czechoslovakia began with the invasion of Bohemia and Moravia, leaving Slovakia as a German puppet state. Lithuania was forced to give up its Klaipėda Region (Memelland). Formal demands were made for the return of the Free City of Danzig to Germany, even though its status was guaranteed by the League of Nations. In early 1939 Hitler proposed Poland an alliance on German terms, with an expectation of compliance. The Polish government would have to agree to Danzig's incorporation by the Reich and to an extraterritorial highway passage connecting East Prussia with the rest of Germany through the so-called Polish Corridor (an area linking the Polish mainland with the Baltic Sea). Poland would join an anti-Soviet alliance and coordinate its foreign policy with Germany, thus becoming a client state. The independence-minded Polish government was alarmed and a British guarantee of Poland's independence was issued on 31 March 1939. Reacting to this act and to Poland's effective rejection of the German demands, Hitler renounced the existing German–Polish Non-Aggression Pact on April 28.[4][10]
In August 1939 negotiations took place in Moscow, launched by the competing Allied-Soviet and Nazi-Soviet working groups, each attempting to enlist Stalin's powerful army on their side. By the evening of 23 August 1939, Germany's offer was accepted by default, because the Polish leaders' refusal to cooperate militarily with the Soviets prevented the possibility of the alternate outcome. The Molotov–Ribbentrop Pact of non-aggression was signed. In anticipation of an attack and occupation of Poland by Nazi Germany, the pact had secret provisions attached, which delineated carving up parts of Eastern Europe into spheres of influence of the two signatories. The dividing line was running through the territory of east-central Poland. The "desirability of the maintenance of an independent Polish State" was left to mutually agreed "further political developments" read the text, which was discovered years later.[4][l]
Military alliances
The Soviet Union, having its own reasons to fear the German eastward expansionism, repeatedly negotiated with France and the United Kingdom, and through them made an offer to Poland of an anti-German alliance, similar to the earlier one made to Czechoslovakia. The British and the French sought the formation of a powerful political-military bloc, comprising the Soviet Union, Poland and Romania in the east, and France and Britain in the west.[4] As of May 1939, the Soviet conditions for signing an agreement with Britain and France were as follows: the right of the Red Army troops to pass through Polish territory, the termination of the Polish–Romanian alliance, and the limitation of the British guarantee to Poland to cover only Poland's western frontier with Germany. The Polish leaders believed that once on Polish territory the Soviet troops would not leave and throughout 1939 refused to agree to any arrangement which would allow Soviet troops to enter Poland.[11]
The Polish unwillingness to accept the Soviet dangerous offer of free entry is illustrated by the quote of Marshal Edward Rydz-Śmigły, commander-in-chief of the Polish armed forces, who said: "With the Germans we run the risk of losing our liberty. With the Russians we will lose our soul".[12] The attitude of the Polish leadership was also reflected by Foreign Minister Józef Beck, who, apparently confident in the French and British declarations of support, asserted that the security of Poland was not going to be guaranteed by a "Soviet or any other Russia". The Soviets then turned to concluding the German offer of a treaty and the Molotov–Ribbentrop Pact was signed. The Soviet-Nazi cooperation had been making progress since May 1939, when Vyacheslav Molotov became the Soviet minister of foreign affairs.[10]
The German military used a system of automated code for the secret transfer of messages based on the Enigma machine. The constantly generated and altered code scheme was broken by Polish mathematicians led by Marian Rejewski and the discovery was shared with the French and the British before the outbreak of the war. Cryptanalysis of the Enigma was an immensely important Polish contribution to the war effort, as it was continued throughout the war in Britain and deprived the unsuspecting Germans of secrecy in their crucial communications.[13]
At the end of August, the Polish-British and Polish-French alliance obligations were updated. Poland, surrounded by the Nazi-led coalition, was under partial military mobilization but poorly prepared for war.[4][p] Full (general) mobilization was prevented by the pressure from the British and French governments, who sought a last-minute peaceful solution to the imminent Polish-German conflict. On 1 September 1939, Poland was invaded by Nazi Germany. Britain and France, bound by military alliances with Poland, declared war on Germany two days later.[6][14][15]
German invasion
On 1 September 1939, without a formal declaration of war, Nazi Germany invaded Poland using the pretext of the Gleiwitz incident, a provocation (one of many)[16] staged by the Germans, who claimed that Polish troops attacked a post along the German–Polish border.[4][10] During the following days and weeks the technically, logistically and numerically superior German forces rapidly advanced into the Polish territory.[17] Secured by the Molotov–Ribbentrop Pact, the Soviet troops also invaded Poland on 17 September 1939. Before the end of the month, most of Poland was divided between the Germans and the Soviets.[18]
The Polish military did not anticipate the German attack. After 1926, Józef Piłsudski led the military to discontinue defense preparations of the western border. They were resumed in March 1939.[19] Afterwards the Polish Armed Forces were organized for the defense of the country. According to the historian Andrzej Leon Sowa, the technical and organizational level of the Polish forces corresponded to that of the World War I period.[20] The armed forces' strategic position was made more hopeless by the recent German occupation of Czechoslovakia. Poland was now surrounded on three sides by the German territories of Pomerania, Silesia and East Prussia, and the German-controlled Czechoslovakia.[21] The newly formed Slovak state assisted their German allies by attacking Poland from the south.[5] The Polish forces were blockaded on the Baltic Coast by the German navy. The Polish public, conditioned by government propaganda, was not aware of the gravity of the situation and expected a quick and easy victory of the Polish-French-British alliance.[22]
The German "concept of annihilation" (Vernichtungsgedanke) that later evolved into the Blitzkrieg ("lightning war") provided for rapid advance of Panzer (armoured) divisions, dive bombing (to break up troop concentrations and destroy airports, railways and stations, roads, and bridges, which resulted in the killing of large numbers of refugees crowding the transportation facilities), and aerial bombing of undefended cities to sap civilian morale.[21] Deliberate bombing of civilians took place on a massive scale from the first day of the war, also in areas far removed from any other military activity.[22] The German forces, ordered by Hitler to act with the harshest cruelty, massively engaged in murder of Polish civilians.[23] The Polish army, air force and navy had insufficient modern equipment to match the onslaught.[24]
Each of Germany's five armies involved in attacking Poland was accompanied by a special security group charged with terrorizing the Polish population; some of the Polish citizens of German nationality had been trained in Germany to help with the invasion, forming the so-called fifth column.[21] Many German leaders in Poland and communist activists were interned by the Polish authorities after 1 September.[16][24] 10–15,000 ethnic Germans were arrested and force marched toward Kutno soon after the beginning of the hostilities. Of them about 2,000 were killed by angry Poles, and other instances of killing ethnic Germans took place elsewhere. Many times greater numbers of Polish civilians had been killed by the Wehrmacht throughout the "September Campaign".[25]
58 German divisions, including 9 Panzer divisions, were deployed against Poland.[26] Germany commanded 1.5 million men, 187,000 motor vehicles, 15,000 artillery pieces, 2,600 tanks, 1,300 armored vehicles, 52,000 machine guns and 363,000 horses. 1,390 Luftwaffe warplanes were used to attack Polish targets. On 1 September the German navy positioned its old battleship Schleswig-Holstein to shell Westerplatte, a section of the Free City of Danzig, a defended enclave separate from the main city and awarded to Poland by the Treaty of Versailles in 1919. 53 navy ships were designated for action against Poland.[16][27]
According to Antoni Czubiński, 1.2 million Polish troops had been mobilized, but some did not even have rifles. There were 30 infantry divisions, 11 cavalry brigades, 31 light artillery regiments, 10 heavy artillery regiments and 6 aerial regiments. They possessed 3,600 artillery pieces (mostly regular, with only a few hundred of anti-armor or anti-aircraft units), and 600 tanks,[5] of which 120 were of the advanced 7TP-type. The air force regiments included 422 aircraft,[5] including 160 PZL P.11c, 31 PZL P.7a and 20 P.11a fighters, 120 PZL.23 Karaś reconnaissance-bombers, and 45 PZL.37 Łoś medium bombers. The Polish-made P-series fighter planes were becoming obsolete; state-of-the art P-24s were built but sold abroad to generate currency. Łoś bombers were modern and fast.[28] The navy's participation was limited by the withdrawal of major ships to the United Kingdom to prevent their destruction, and their linking up with the Royal Navy (known as the Peking Plan). The navy consisted of four destroyers (of which three had left for England),[5] one minelayer, five submarines, and some smaller vessels, including six new minesweepers.
Although the UK and France declared war on Germany on 3 September, little movement took place on the western front. The offensive in the West that the Poles understood they were promised was not materializing,[29] and, according to Norman Davies, it was not even immediately feasible or practical.[21] Because of the Western inaction, of the secret protocols of the German-Soviet treaty, and other factors including its own poor intelligence, the Polish government was initially not fully aware of the degree of the country's isolation and the hopelessness of its situation.[5] The combined British and French forces were strong in principle, but not ready for an offensive for a number of reasons. The few limited air raids attempted by the British were ineffective and caused losses of life and equipment. Dropping propaganda leaflets had henceforth become their preferred course of action, to the dismay of the Polish public, which was led to believe that a real war on two fronts and a defeat of the Third Reich were coming.[30]
The several Polish armies were defending the country in three main concentrations of troops, which had no territorial command structure of their own and operated directly under orders from Marshal Edward Rydz-Śmigły; it turned out to be a serious logistical shortcoming.[31] The armies were positioned along the border in a semicircle, which provided for weak defense, because the Germans concentrated their forces in the chosen directions of attacks.[5] The German armored corps quickly thwarted all attempts of organized resistance and by 3–4 September the Polish border defenses were broken along all the axes of attack. Crowds of civilian refugees fleeing to the east blocked roads and bridges. The Germans were also able to circumvent other concentrations of the Polish military and arrive in the rear of Polish formations.[24]
As the Polish armies were being destroyed or in retreat, the Germans took Częstochowa on 4 September, Kraków and Kielce on 6 September. The Polish government was evacuated to Volhynia and the supreme military commander Rydz-Śmigły left Warsaw on the night of 6 September and moved in the eastern direction toward Brześć. General Walerian Czuma took over and organized the defense of the capital city.[17] According to Halik Kochanski, Rydz-Śmigły fled the capital and the Polish high command failed its army.[25] Rydz-Śmigły's departure had disastrous effects on both the morale of the Polish armed forces and on his ability to exercise effective overall command.[32]
The Germans began surrounding Warsaw on 9 September.[21] City president Stefan Starzyński played an especially prominent role in its defense.[17] The campaign's greatest Battle of the Bzura was fought west of the middle Vistula on 9–21 September. Heavy fighting took place also at a number of other locations, including the area of Tomaszów Lubelski (until 26 September), and a determined defense of Lwów was mounted (against the German forces until 22 September, when the defenders surrendered to the Soviets upon their arrival). On 13 September, Marshal Rydz-Śmigły ordered all Polish forces to withdraw toward the so-called Romanian Bridgehead in southeastern Poland, next to the Romanian and Soviet borders, the area he designated to be the final defense bastion.[17][18][21][27][33]
On 11 September, foreign minister Józef Beck asked France to grant asylum to the Polish government and Romania to allow the transfer of the government members through its territory. On 12 September, the Anglo-French Supreme War Council deliberating in Abbeville, France concluded that the Polish military campaign had already been resolved and that there was no point in launching an anti-German relief expedition. The Polish leaders were unaware of the decision and still expected a Western offensive.[17]
Soviet invasion
From 3 September Germany urged the Soviet Union to engage its troops against the Polish state,[34] but the Soviet command kept stalling,[21] waiting for the outcome of the German-Polish confrontation[34] and to see what the French and the British were going to do.[35] The Soviet Union assured Germany that the Red Army advance into Poland would follow later at an appropriate time.[34]
For the optimal "political motivation" (a collapse of Poland having taken place), Molotov wished to hold the Soviet intervention until the fall of Warsaw, but the city's capture by the Germans was being delayed due to its determined defense effort (until September 27). The Soviet troops marched on 17 September into Poland, which the Soviet Union claimed to be by then non-existent anyway (according to the historian Richard Overy, Poland was defeated by Germany within two weeks from 1 September).[6][34] The Soviet invasion of Poland was justified by the Soviets by their own security concerns and by the need to protect the ethnically Belarusian and Ukrainian populations.[36] The invasion was coordinated with the movement of the German army,[34] and met limited resistance from the Polish forces. The Polish military formations available in the eastern part of the country were ordered by the high command, who were then at the Romanian border,[18] to avoid engaging the Soviets,[35][c] but some fighting between Soviet and Polish units did take place (such as the Battle of Szack fought by the Border Protection Corps).[37] The Soviet forces moved west (to the Bug River) and south to fill the area allotted to them by the secret protocol of the Molotov–Ribbentrop Pact. They took steps to block the potential Polish evacuation routes into Lithuania, Latvia, Romania and Hungary.[18][21]
About 13.4 million Polish citizens lived in the areas seized by the Soviet Union. Of those, about 8.7 million were Ukrainians, Belarusians and Jews. The minorities' relations with the Polish authorities were generally bad and many of their members greeted and supported the arriving Red Army troops as liberators.[38] The British and French responses to the "not unexpected" Soviet encroachment were muted.[33][35]
Had it not been for the Soviet-German treaty and the Soviet invasion, all of prewar Poland would have likely been captured by Nazi Germany already in 1939.[39]
End of campaign
The Nazi-Soviet treaty process was continued with the German–Soviet Frontier Treaty signed on 28 September. It adjusted and finalized the territorial division, placing Lithuania within the Soviet sphere and moving the Soviet-German agreed boundary east from the Vistula to the Bug River,[40] and authorized further joint action to control occupied Poland.[21] An idea of retaining a residual Polish state, considered earlier, was abandoned.[34][38]
The Polish government and military high command retreated to the southeast Romanian Bridgehead territory and crossed into neutral Romania on the night of 17 September. From Romania on 18 September President Ignacy Mościcki and Marshal Rydz-Śmigły issued declarations and orders, which violated their status of persons passing through a neutral country. Germany pressured Romania not to allow the Polish authorities to depart (their intended destination was France) and the group was interned. The Polish ambassador in Romania helped General Władysław Sikorski, a member of the Polish opposition who was refused a military assignment and also entered Romania, to acquire departure documents and the general left for France.[18]
Resistance continued in many places. Warsaw was eventually bombed into submission. The event that served as a trigger for its surrender on 27 September was the bombing damage to the water supply system caused by deliberate targeting of the waterworks.[32] Warsaw suffered the greatest damage and civilian losses (40,000 killed), already in September 1939.[41][s] The Modlin Fortress capitulated on 29 September, the Battle of Hel continued until 2 October, and the Battle of Kock was fought until 4 October.[18] In the country's woodlands, army units began underground resistance almost at once.[21] Major "Hubal" and his regiment pioneered this movement. During the September Campaign, the Polish Army lost about 66,000 troops on the German front; about 400,000 became prisoners of Germany and about 230,000 of the Soviet Union.[e] 80,000 managed to leave the country. 16,600 German soldiers were killed and 3,400 were missing. 1000 German tanks or armored vehicles and 600 planes were destroyed. The Soviet Army lost between 2,500 and 3,000 soldiers, while 6,000 to 7,000 Polish defenders were killed in the east. Over 12,000 Polish citizens executed by the Nazis were among the approximate 100,000 civilian victims of the campaign.[18][33]
Several Polish Navy ships reached the United Kingdom and tens of thousands of soldiers escaped through Hungary, Romania, Lithuania and Sweden to continue the fight.[42] Many Poles took part in the Battle of France, the Battle of Britain, and, allied with the British forces, in other operations (see Polish contribution to World War II).[43]