Polish contribution to World War II

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Main involvements of Polish forces
WesterplatteMokra - BzuraEnigmaNarvikBattle of BritainTobrukGazalaDieppeLeninoMonte CassinoV2 CaptureFalaiseWarsaw UprisingMarket GardenScheldt - BautzenBerlin
"Poland: First to Fight" (poster, 1939).
"Poland: First to Fight" (poster, 1939).
Polish "Thank You, Poles", Dutch "Freed by the Poles": liberation of Breda, 1944.
Polish "Thank You, Poles", Dutch "Freed by the Poles": liberation of Breda, 1944.

The European theater of World War II opened with the Invasion of Poland by German armed forces on September 1, 1939. The Soviet Union's invasion from the east on September 17, 1939, ended any realistic chance of Polish conventional resistance.

After Poland had been overrun, a government-in-exile was established, armed forces and an intelligence service outside Poland, contributing to the Allied effort throughout the war. Poland never made a general surrender and was the only German-occupied country that did not produce a puppet government that collaborated with the Nazis. Instead her people provided crucial assistance to the Allies throughout the War, including the initial cracking of the Enigma machine by cryptologist Marian Rejewski, the assistance given by Polish pilots to the United Kingdom in the Battle of Britain, and the costly victory over German forces at the Battle of Monte Cassino, to name a few.

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[edit] Invasion of Poland (1939)

For more details on this topic, see Invasion of Poland (1939).

The Invasion of Poland was the start of World War II with the aggression against Poland by the military forces of Nazi Germany and the Soviet Union and by a small German-allied Slovak contingent. The invasion of Poland marked the start of World War II in Europe as Poland's western allies, the United Kingdom and France, declared war on Germany on September 3. The campaign began on September 1, 1939, one week after the signing of the Molotov-Ribbentrop Pact containing a secret protocol, and ended on October 6, 1939, with Germany and the Soviet Union occupying the entirety of Poland.

German personnel losses were about approx 16,000 KIA and the loss of about 30% of the German's armored vehicles was one of the main reasons an immediate attack westward was discarded.

[edit] Underground resistance in Poland

This article is part
of the series:
Polish Secret State
Kotwica
History of Poland
Further information: Polish resistance movement in World War II and Polish Underground State

The main resistance force in Nazi-occupied Poland was the Armia Krajowa ("Home Army"; abbreviated "AK"), which numbered some 200,000-300,000 soldiers at its peak as well as many more sympathizers.[1] The AK coordinated its operations with the exiled Polish Government in London and its activity concentrated on sabotage, diversion and intelligence gathering [1]. Its combat activity was low until 1943 [1][2] as the army was avoiding the suicidal warfare and preserving its very limited force for the later conflicts that sharply increased when the Nazi war machine started to crumble in the wake of the successes of the Red Army in the Eastern Front. Then the AK started a nationwide uprising (Operation Tempest) against Nazi forces [3]. Before that AK units carried out thousands of raids, intelligence operations, bombed hundreds of railway shipments, participated in many clashes and battles with the German police and Wehrmacht units and conducted tens of thousands of acts of sabotage against German industry [4]. The AK also conducted "vengeance" operations to assassinate Gestapo officials responsible for Nazi terror. Following the 1941 German attack on the USSR, the AK assisted the Soviet Union's war effort by sabotaging German advances into Russian territories and provided intelligence on the deployment and movement of German forces [5]. After 1943 its direct combat activity increased sharply. German losses to the Polish partisans averaged 850-1700 per month in early 1944 compared to about 250-320 per month in 1942.

Distinct from the Home Army was an underground ultra-nationalist [1] resistance force called Narodowe Siły Zbrojne (NSZ or National Armed Forces), with a fiercely anti-communist and chauvinist stance. It participated in fighting German units, winning many skirmishes. From 1943 onwards, some units took part in battling the Gwardia Ludowa, a communist resistance movement. From 1944, the advancing Red Army was also seen as a foreign occupation force, prompting skirmishes with the Soviets as well as Soviet-backed partisans. In the later part of the war, when Soviet partisans started attacking Polish partisans, symphatisers and civilians, all non-communist Polish formations were (to a growing extent) becoming involved in actions against the Soviets. [6]

The Armia Ludowa, a Soviet proxy fighting force [7] was another group that was unrelated to the Polish Government in Exile, allied instead to the Soviet Union. As of July, 1944 it incorporated a similar ogranization, the Gwardia Ludowa, and numbered about 6,000 soldiers[8] (although estimates vary).

There were separate resistance groups organized by Polish Jews [1]: the right-wing zionist Jewish Fighting Union (ŻZW) and the more left-leaning Jewish Combat Organization (ŻOB). These organisations cooperated little with each other and their relationship with the Polish resistance varied between occasional cooperation (mainly between ZOB and AK) to armed confrontations (mostly between ZZW and NZS).

Other notable Polish resistance organizations included the Bataliony Chłopskie (BCh), a mostly peasant-based organization allied to the AK. At its height the BCh included 175,000 members.

[edit] Intelligence

Further information: Cipher Bureau and Operation Most III
Cyclometer. Diagram from Marian Rejewski’s papers. 1: Rotor lid closed. 2: Rotor lid open. 3: Rheostat. 4: Glowlamps. 5: Switches. 6: Letters.
Cyclometer. Diagram from Marian Rejewski’s papers. 1: Rotor lid closed. 2: Rotor lid open. 3: Rheostat. 4: Glowlamps. 5: Switches. 6: Letters.

During a period of over six and a half years, from late December 1932 to the outbreak of World War II, three mathematician-cryptologists (Marian Rejewski, Henryk Zygalski and Jerzy Różycki) at the Polish General Staff's Cipher Bureau in Warsaw had developed a number of techniques and devices — including the "grill" method, Różycki's "clock," Rejewski's "cyclometer" and "card catalog," Zygalski's "perforated sheets," and Rejewski's "cryptologic bomb" (Polish term: bomba, precursor to the later British "Bombe," named after its Polish predecessor) — to facilitate decryption of messages produced on the German "Enigma" cipher machine. A few weeks before the outbreak of World War II, on July 25, 1939, near Pyry in the Kabaty Woods just south of Warsaw, Poland disclosed her achievements to France and the United Kingdom, which had, up to that time, failed in all their own efforts to crack the German military Enigma cipher.

Had Poland not shared her results at Pyry, the United Kingdom would, at the very least, have been delayed by one or two years in reading Enigma, and could well have been unable to read it at all. In the event, intelligence gained from this source, codenamed ULTRA, was extremely valuable in the Allied prosecution of the war, although the exact influence of ULTRA on the course of the war has been a subject of debate. Some have argued that it decided the very outcome of the war itself, but more recently the view that ULTRA hastened the defeat of Germany by a period of time (between 6 months and 4 years) has found widespread acceptance.

As early as 1940, Polish agents (see Witold Pilecki) penetrated German concentration camps, including Auschwitz, and informed the world about Nazi atrocities.

Members of the AK recovering the V-2 from the river Bug.
Members of the AK recovering the V-2 from the river Bug.

Home Army (Polish: Armia Krajowa) AK intelligence was vital in locating and destroying (18 August 1943) the German rocket facility at Peenemunde and in gathering information about Germany's flying bomb and V-2 rocket. The Home Army delivered to the United Kingdom key V-2 parts, after a V-2 rocket, fired 30 May 1944, crashed near a German test facility at Sarnaki on the Bug River and was recovered by the Home Army. On the night of 25-26 July, 1944, the crucial parts were flown from occupied Poland to the United Kingdom in an RAF plane, along with detailed drawings of parts too large to fit in the plane (see Home Army and V1 and V2). Analysis of the German rocket became vital to improving Allied anti-V-2 defenses (see Operation Most III).

Polish intelligence cooperated with the other Allies in every European country and operated one of the largest intelligence networks in Nazi Germany. Many Poles also served in other Allied intelligence services, including the celebrated Krystyna Skarbek ("Christine Granville") in the United Kingdom's Special Operations Executive.

[edit] Polish Armed Forces in the West

For more details on this topic, see Polish Armed Forces in the West.

[edit] Army

Polish Armed Forces in the West
at the height of their power
Deserters from the German Wehrmacht 89,300 (35.8%)
Evacuees from the USSR in 1941 83,000 (33.7%)
Evacuees from France in 1940 35,000 (14.0%)
Liberated POWs 21,750 (8.7%)
Escapees from occupied Europe 14,210 (5.7%)
Recruits in liberated France 7,000 (2.8%)
Polonia from Argentina, Brazil and Canada 2,290 (0.9%)
Polonia from United Kingdom 1,780 (0.7%)
Total 249,000
Note: Until July 1945, when recruitment was halted, some 26,830 Polish soldiers were declared KIA or MIA or had died of wounds. After that date, an additional 21,000 former Polish POWs were inducted.

Source: Reference #4

After the country's defeat in the 1939 campaign, the Polish government in exile quickly organized in France a new army of about 80,000 men. In 1940 a Polish Highland Brigade took part in the Battle of Narvik (Norway), and two Polish divisions (First Grenadier Division, and Second Infantry Fusiliers Division) took part in the defense of France, while a Polish motorized brigade and two infantry divisions were in process of forming. A Polish Independent Carpathian Brigade was formed in French-mandated Syria, to which many Polish troops had escaped from Romania. The Polish Air Force in France comprised eighty-six aircraft in four squadrons, one and a half of the squadrons being fully operational while the rest were in various stages of training.

After the fall of France, numbers of Polish personnel had died in the fighting or been interned in Switzerland. Nevertheless, General Władysław Sikorski, Polish commander-in-chief and prime minister, was able to evacuate many Polish troops to the United Kingdom. In 1941, following an agreement between the Polish government in exile and Joseph Stalin, the Soviets released Polish citizens, from whom a 75,000-strong army was formed in the Middle East under General Władysław Anders ("Anders' Army").

A Polish flag flying over the ruins of the Monte Cassino monastery.
A Polish flag flying over the ruins of the Monte Cassino monastery.

The Polish armed forces in the west fought under the British command and numbered 195,000 in March 1944 and 165,000 at the end of that year, including about 20,000 personnel in the Polish Air Force and 3,000 in the Polish Navy. At the end of WWII, the Polish Armed Forces in the west numbered 195,000 and by July 1945 had increased to 228,000, most of the newcomers being released prisoners of war and ex-labor-camp inmates.

[edit] Air Force

Further information: Polish Air Forces in France and Great Britain

The Polish Air Force fought in the Battle of France as one fighter squadron GC 1/145, several small units detached to French squadrons, and numerous flights of industry defence (in total, 133 pilots, who achieved 55 victories at a loss of 15 men).

Later, Polish pilots fought in the Battle of Britain, where the Polish 303 Fighter Squadron achieved the highest number of kills of any Allied squadron. From the very beginning of the war, the Royal Air Force (RAF) had welcomed foreign pilots to supplement the dwindling pool of British pilots. On 11 June 1940, the Polish Government in Exile signed an agreement with the British Government to form a Polish Army and Polish Air Force in the United Kingdom. The first two (of an eventual ten) Polish fighter squadrons went into action in August 1940. Four Polish squadrons eventually took part in the Battle of Britain (300 and 301 Bomber Squadrons; 302 and 303 Fighter Squadrons), with 89 Polish pilots. Together with more than 50 Poles fighting in British squadrons, a total of 145 Polish pilots defended British skies. Polish pilots were among the most experienced in the battle, most of them having already fought in the 1939 September Campaign in Poland and the 1940 Battle of France. Additionally, prewar Poland had set a very high standard of pilot training. The 303 Squadron, named after the Polish-American hero, General Tadeusz Kościuszko, achieved the highest number of kills (126) of all fighter squadrons engaged in the Battle of Britain, even though it only joined the combat on August 30, 1940: these 5% of pilots were responsible for a phenomenal 12% of total victories in the Battle.

126 German airplanes shot down by the 303 squadron during the Battle of Britain. Painted on a Hurricane.
126 German airplanes shot down by the 303 squadron during the Battle of Britain. Painted on a Hurricane.

The Polish Air Force also fought in 1943 in Tunisia (Polish Fighting Team, so called "Skalski's Circus") and in raids on Germany (1940-45). In the second half of 1941 and early 1942, Polish bomber squadrons were the sixth part of forces available to RAF Bomber Command (later they suffered heavy losses, with little replenishment possibilities). Polish aircrew losses serving with Bomber Command 1940-45 were 929 killed. Ultimately 8 Polish fighter squadrons were formed within the RAF and had claimed 629 Axis aircraft destroyed by May 1945. By war's end, there were 14,000 Polish airmen in 15 RAF squadrons and in the United States Army Air Forces (USAAF).

Polish squadrons in the United Kingdom:

[edit] Navy

Just on the eve of war, three destroyers - representing most of the major Polish Navy ships - had been sent for safety to the British Isles (Operation Peking). There they fought alongside the Royal Navy. At various stages of the war, the Polish Navy comprised two cruisers and a large number of smaller ships. The Polish Navy fought with great distinction alongside the other Allied navies in many important and successful operations, including those conducted against the German battleship, Bismarck.

The above list does not include a number of minor ships, transports, merchant-marine auxiliary vessels, and patrol boats.

[edit] Polish Armed Forces in the East

For more details on this topic, see Polish Armed Forces in the East.
Residents of Warsaw meet the soldiers of the Red Army and the Polish First Army. January, 1945
Residents of Warsaw meet the soldiers of the Red Army and the Polish First Army. January, 1945
Polish military commanders leading their troops at the ceremonial Victory Parade on Red Square, Moscow on June 24, 1945.
Polish military commanders leading their troops at the ceremonial Victory Parade on Red Square, Moscow on June 24, 1945.


Broadly speaking, there were two formations among the Polish Armed Forces in the East. First was the Polish government-in-exile-loyal Anders Army, created in the second half of 1941 after German invasion of the USSR. In 1943 this formation was transferred to the Western Allies and became known as the Polish II Corps. Additionally, remaining Polish forces in USSR were reorganized into Soviet-controlled Polish I Corps in the Soviet Union, which in turn was reorganized in 1944 into Polish First Army (Berling Army) and Polish Second Army, both part of Polish People's Army (Ludowe Wojsko Polskie, LWP). In 1944, following the Poland's being liberated from the Nazi occupation, the organizational the Polish People's Army was reorganized into a Poland-based military formation.

In the aftermath of the Operation Barbarossa, Stalin agreed (Sikorski-Mayski Agreement) release tens of thousands of Polish prisoners-of-war held in Soviet camps from whom a military force was formed. The Anders Army, as the formation became known, was loyal to the Polish government in exile, and as such its formation was obstructed by the Soviets. Eventually, with about 40 000 combatants and 70 000 civilians, it was transferred to the British command in the Middle East, becoming the Polish II Corps and part of the Polish Armed Forces in the West.

To utilize the potential of the remaining Polish soldiers in USSR, without repeating the previous mistake which allowed Anders Army to leave USSR, the Soviet Union created a Union of Polish Patriots (ZPP) in 1943 as communist puppet counter-government[2][9] to the Polish government in exile. At the same time a parallel army (Polish People's Army or LWP) was created which by the end of the war numbered about 200,000 troops.[2] There pro-Soviet Polish resistance Armia Ludowa was integrated with Polish People's Army at the end of the war. These Soviet-created Polish army units on the Eastern Front included the First, the Second and the Third Polish Armies (the latter was later merged with the second), with 10 infantry divisions and 5 armored brigades.

The Polish First Army was integrated in the 1st Belorussian Front with which it entered Poland from the Soviet territory in 1944. Ordered to hold position by the Soviet leadership, it did not advance towards Warsaw as Germans suppressed the Warsaw Uprising. It took part in battles for Bydgoszcz, Kolobrzeg (Kolberg), Gdańsk (Danzig) and Gdynia losing 20,000 people in the winter of 1944-45 battles.[2] In April-May 1945 the 1st Army fought in the final capture of Berlin. The Polish Second Army fought within the Soviet 1st Ukrainian Front and took part in the Prague Offensive. In the final operations of the war the losses of the two armies of the LWP amounted to 32,000.

[edit] Battles

Major battles and campaigns in which Polish regular forces took part:

[edit] Technical inventions

Mine detector (Polish) Mark I
Mine detector (Polish) Mark I

[edit] References

[edit] In-line

  1. ^ a b c d Steven J Zaloga (1982). "The Underground Army", Polish Army, 1939-1945. Oxford: Osprey Publishing. ISBN 0-85045-417-4. 
  2. ^ a b c Steven J Zaloga (1982). "The Polish People's Army", Polish Army, 1939-1945. Oxford: Osprey Publishing. ISBN 0-85045-417-4. 

[edit] General

[edit] See also

[edit] External links

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