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.
The Polish armed forces in the west 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 July1945 had increased to 228,000, most of the newcomers being released prisoners of war and ex-labor-camp inmates. The communist government organized its own army, the Polish People's Army (Wojsko Ludowe), which in 1944 numbered 78,000 and at the end of the war was close to 500,000 strong. In addition, the Armia Krajowa ("Home Army"; abbreviated "AK"), the Polish resistance forces in Poland itself, at their peak numbered some 200,000 regular soldiers and many more underground members and sympathizers.
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 June1940, the Polish Government in Exile signed an agreement with the British Government to form a Polish Army and Polish Air Force in Britain. 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. 303 Squadron, named after the Polish-American hero, General Tadeusz Kosciuszko, achieved the highest number of kills (273) 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.
No. 315 "City of Dęblin" Polish Fighter Squadron (Dębliński)
No. 316 "City of Warsaw" Polish Fighter Squadron (Warszawski)
No. 317 "City of Wilno" Polish Fighter Squadron (Wileński)
No. 318 "City of Gdańsk" Polish Fighter-Reconnaissance Squadron (Gdański)
No. 663 Polish Artillery Observation Squadron
Polish Fighter Team (Skalski's Circus)
Navy
Just on the eve of war, most of the major Polish Navyships had been sent for safety to the British Isles. There they fought alongside the Royal Navy. At various stages of the war, the Polish Navy comprised 2 cruisers and a large number of smaller ships, including 3 destroyers and 2 submarines that had left the Baltic Sea in late August1939.
The above list does not include a number of minor ships, transports, merchant-marine auxiliary vessels, and patrol boats.
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.
Intelligence
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 Rozycki) at the Polish General Staff's Cipher Bureau (Biuro Szyfrow) in Warsaw had developed a number of techniques and devices--including Rozycki's "clock," Zygalski's "perforated sheets," and Rejewski's "cryptological bomb" (precursor to the later British "Bombe," so named after its Polish predecessor)--to facilitate decryption of messages produced on the German "Enigma" cipher machine. A month before the outbreak of World War II, on July 25, 1939, at Pyry in the Kabaty Woods just south of Warsaw, Poland disclosed her achievements to France and Britain, which had failed in all their own efforts to crack the Enigma cipher. Absent the subsequent Allied reading of Germany's Enigma ciphers, Britain would--in Winston Churchill's estimation--not have held out against Germany, and the U.S. would not have had Britain as a springboard to the European and North African theaters of operations. The outcome of the war in Europe would have been left to Nazi Germany and the Soviet Union to contest between them.
Home Army (Polish: Armia Krajowa) intelligence was vital in locating and destroying (18 August1943) the German rocket facility at Peenemunde and in gathering information about Germany's V-1buzzbomb and V-2rocket. The Home Army delivered to Britain 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 Britain in an RAF plane, along with detailed drawings of parts too large to fit in the plane (see Operation III Most ). Analysis of the German rocket became vital to improving Allied anti-V-2 defenses.
Replicas of the German Enigma cipher machine had been produced at the start of 1933 to the specifications of Polish mathematician-cryptologistMarian Rejewski, and two machines of the current model were given to the British and French just before the outbreak of war in 1939. Rejewski and his two cryptologist colleagues also invented the cryptological bomb, perforatedZygalski sheets, and other techniques and devices for breaking Enigma ciphers.
Józef Kosacki invented the Polish mine detector, which would be used by the Allies throughout the war.
A bomb-hatch system was invented by Wladyslaw Swiatecki in the 1930s and was used in the prewar Polish PZL P.37Elk (Los ) bomber. In 1940 Swiatecki turned his invention over to the British, who used it in most British bombers. In 1943, an updated version was created by Jerzy Rudlicki for the American B-17 Flying Fortress.
Henryk Magnuski, a Polish engineer working for Motorola, in 1940 invented the SCR-300 radio, the first small radio receiver/transmitter to have manually-set frequencies. It was used extensively by the American Army and was nicknamed the walkie-talkie.
Jan Koniarek, Polish Air Force 1939-1945, Squadron/Signal Publications, 1994, ISBN 0897473248.
Stefan Korboński , Zofia Korbońska, F. B. Czarnomski: Fighting Warsaw: the Story of the Polish Underground State, 1939-1945, Hippocrene Books, 2004, ISBN 0781810353.
Wladyslaw Kozaczuk , Enigma: How the German Machine Cipher Was Broken, and How It Was Read by the Allies in World War Two, edited and translated by Christopher Kasparek, University Publications of America, 1984, ISBN 0890935475. (This remains the standard reference on the Polish part in the Enigma-decryption epic.)
Władysław Kozaczuk, Jerzy Straszak: Enigma: How the Poles Broke the Nazi Code, Hippocrene Books; February 1, 2004, ISBN 078180941X.
Michael Alfred Peszke, The Polish Underground Army, the Western Allies, and the Failure of Strategic Unity in World War II, foreword by Piotr S. Wandycz, Jefferson, NC, McFarland & Company, 2005, ISBN 0-7864-2009-X.
Polish Air Force Association: Destiny Can Wait: The Polish Air Force in the Second World War, Battery Press, 1988, ISBN 089839113X.
Harvey Sarner: Anders and the Soldiers of the Second Polish Corps, Brunswick Press, 1998, ISBN 1888521139.