Witold's Report, also known as Pilecki's Report, is an official report of over 100 pages (in its final version) written in 1943 by Witold Pilecki, a Polish military officer and agent of the Polish resistance, who was purposely imprisoned in Auschwitz concentration camp and managed to escape from it. His was the first comprehensive record of a Holocaust death camp to be obtained by the Allies.
The report includes details about the gas chambers, "Selektion" and the sterilization experiments. It states that there were three crematoria in Birkenau able to cremate 8000 people daily. Raul Hilberg wrote that the Office of Strategic Services in London, which received the report, filed it away with a note that there was no indication as to its reliability.
Pilecki's Report preceded and complemented the subsequent Polish Major's Report by Jerzy Tabeau (who escaped with Roman Cieliczko on 19 November 1943 and compiled a report between December 1943 and January 1944), the earliest of the three eyewitness reports known jointly as the Auschwitz Protocols which warned about the mass murder and other atrocities that were taking place inside the camp.
On November 9, 1939, after the Polish Army was defeated in the Invasion of Poland, cavalry captain Witold Pilecki together with his commander Major Jan Włodarkiewicz founded the Secret Polish Army (Tajna Armia Polska, TAP). In 1940, Pilecki presented to his superiors a plan to enter Germany's Auschwitz concentration camp, gather intelligence on the camp from the inside, and organize inmate resistance. At that time little was known about the Germans' way of running of the camp, as it then appeared to operate as an internment or large prison camp. His superiors approved the plan and provided him with a false identity card in the name of "Tomasz Serafiński". On September 19, 1940, he deliberately went out during a Warsaw street roundup (łapanka), and was caught by the Germans along with some 2,000 innocent civilians. After two days' detention in the Light Horse Guards Barracks, where prisoners suffered beatings with rubber batons,Pilecki was sent to Auschwitz and was assigned inmate number 4859. 
Inside the camp Pilecki organized an underground Union of Military Organizations (Związek Organizacji Wojskowej, ZOW), which was connected with other smaller underground organizations. Pilecki planned a general uprising in Auschwitz and hoped that the Allies would drop arms or troops into the camp (most likely the Polish 1st Independent Parachute Brigade, based in Britain), and that the Home Army would organize an assault on the camp from outside. In 1943, the Gestapo redoubled its efforts to ferret out ZOW members, succeeding in killing many of them. Pilecki decided to break out of the camp, hoping to personally convince Home Army leaders about his idea of uprising in Auschwitz. On the night of April 26/27, 1943, Pilecki made a daring escape from the camp, but the Home Army did not accept his insurgency plan, as the Allies considered his reports about the Holocaust exaggerated.
ZOW's intelligence network inside the camp started to send regular reports to the Home Army from October 1940. Beginning in November 1940, the first information about genocide occurring in the camp was sent via ZOW to Home Army Headquarters in Warsaw. From March 1941 onwards Witold Pilecki's messages were forwarded to the Polish government in exile in London and through it, to the British government and other Allied governments. These reports informed the Allies about the unfolding Holocaust and were the principal source of intelligence on Auschwitz-Birkenau for the Western Allies.
On June 20, 1942, four Poles, Eugeniusz Bendera, Kazimierz Piechowski, Stanisław Gustaw Jaster and Józef Lempart made a daring escape from Auschwitz camp.    Dressed as members of the SS-Totenkopfverbände, fully armed and in an SS staff car they drove out the main gate in a stolen automobile, a Steyr 220 belonging to Rudolf Höss. Jaster, a member of ZOW, carried with him a detailed report about conditions in the camp, written by Pilecki. The Germans never recaptured any of them.
After a daring escape from Auschwitz on April 27, 1943, Pilecki wrote Raport W. The report was signed by other members of the Polish underground who worked with ZOW: Aleksander Wielopolski, Stefan Bielecki, Antoni Woźniak, Aleksander Paliński, Ferdynand Trojnicki, Eleonora Ostrowska and Stefan Miłkowski, and it included a section called, "Teren S", which contained a list of ZOW members. Later, after his release from the German Prisoner-of-war camp at Murnau in 1945, Pilecki compiled a version of the report that was over 100 pages long.
The first publication of Witold's Report took place in 2000, 55 years after the war. An English translation was published in 2015 under the title The Auschwitz Volunteer: Beyond Bravery.
- Raczyński's Note
- The Polish White Book
- The Black Book of Poland
- Auschwitz Protocols
- Witold Pilecki
- The Volunteer (book)
- Vrba–Wetzler report
- Karski's reports
- Hilberg, Raul (1961). The Destruction of the European Jews (2003 republication ed.). Yale University Press. p. 1212.
- Henryk Świebocki (1997). London has been informed—: reports by Auschwitz escapees. p. 94. ISBN 83-85047-60-3.
The chronological order begins with the 'Polish Major's Report,' Jerzy Tabeau's text from his Polish manuscript, which the ... still in the camp, the memoirs of August Kowalczyk, or the accounts of the late Stanisiaw Chybinski and Witold Pilecki.
- Malinowski, Kazimierz (1986). Tajna Armia Polska. Znak. Konfederacja Zbrojna. Zarys genezy, organizacji i działalności (in Polish). Warszawa. ISBN 83-211-0791-5.
- Pawłowicz, Jacek (2008). Rotmistrz Witold Pilecki 1901–1948 (in Polish). ISBN 978-83-60464-97-7.
- Lewis 1999, p. 390
- Pilecki, Witold (2012). The Auschwitz Volunteer: Beyond Bravery. USA: Aquila Polonica (US) Ltd. p. 460. ISBN 978-1-60772-010-2.
- Świerczek, Lidia. "Rotamaster Witold Pilecki 1901–1948". The Institute of National Remembrance. Retrieved 13 December 2016.
- Foot, Michael Richard Daniell (1978). "Secret agents against Nazi tyranny. Witold Pilecki, Leo Cooper". Six Faces of Courage. Eyre Methuen. ISBN 0-413-39430-1.
- Garlinski, Jozef (1975). Fighting Auschwitz: The Resistance Movement in the Concentration Camp. Fawcett. pp. 191–197.
- Cyra, Adam; Garliński, Józef (2000). Ochotnik do Auschwitz: Witold Pilecki 1901–48 [Volunteer for Auschwitz]. Oświęcim. ISBN 83-912000-3-5.
- Davies, Norman (1996). Europe: A History. Oxford University Press. ISBN 0-06-097468-0.
- Wojciech Zawadzki (2012), Przedborski, Słownik Biograficzny, via Internet Archive
- https://web.archive.org/web/20131103214327/http://www.psbprzedborz.pl/index.php?option=com_content&view=article&id=50%3Abendera-eugeniusz Eugeniusz Bendera (1906-po 1970)
- Kazimierz Piechowski, Eugenia Bożena Kodecka-Kaczyńska and Michał Ziółkowski. "Byłem Numerem: świadectwa z Auschwitz". Hardcover, Wydawnictwo Sióstr Loretanek, ISBN 83-7257-122-8
- "en.auschwitz.org.pl". auschwitz.org.pl. 2009-01-13. Archived from the original on 2011-05-22. Retrieved 2010-08-23.
- Pilecki, Witold. "Witold's Report". Volunteer for Auschwitz. Translated by Kucharski, Jacek (Full Text Online, Translated from Polish for the "LET'S REMINISCE ABOUT WITOLD PILECKI" ("PRZYPOMNIJMY O ROTMISTRZU") initiative ed.). Retrieved August 12, 2015.
- Pilecki, Witold (30 April 2015). The Auschwitz Volunteer: Beyond Bravery. Translated by Garlinski, Jarek. Aquila Polonica. ISBN 1-60772-009-4.
- Adam Cyra, Ochotnik do Auschwitz. Witold Pilecki 1901–1948, ISBN 83-912000-3-5, Chrześcijańskie Stowarzyszenie Rodzin Oświęcimskich, Oświęcim 2000
- Cyra, Adam Spadochroniarz Urban [Paratrooper Urban], Oświęcim 2005.
- Cyra, Adam and Wiesław Jan Wysocki, Rotmistrz Witold Pilecki, Oficyna Wydawnicza VOLUMEN, 1997. ISBN 83-86857-27-7
- Jacek Pawłowicz, Rotmistrz Witold Pilecki 1901–1948, 2008, ISBN 978-83-60464-97-7.
- Foot, Michael Richard Daniell (2003), Six Faces of Courage. Secret agents against Nazi tyranny. Witold Pilecki, Leo Cooper, ISBN 0-413-39430-1
- Lewis, Jon E. (1999), The Mammoth Book of True War Stories, Carroll & Graf Publishers, ISBN 0-7867-0629-5
- Piekarski, Konstanty R. (1990), Escaping Hell: The Story of a Polish Underground Officer in Auschwitz and Buchenwald, Dundurn Press Ltd., ISBN 1-55002-071-4
- Tchorek, Kamil (March 12, 2009), Double life of Witold Pilecki, the Auschwitz volunteer who uncovered Holocaust secrets, London: The Times, http://www.timesonline.co.uk/tol/news/world/europe/article5891132.ece, retrieved March 16, 2009
- Wyman, David S.; Garlinski, Jozef (December 1976), "Review: Jozef Garlinski. Fighting Auschwitz: The Resistance Movement in the Concentration Camp", American Historical Review (American Historical Association) 81 (5): 1168–1169, doi:10.2307/1853043, ISSN 0002-8762
- Ciesielski E., Wspomnienia Oświęcimskie [Auschwitz Memoirs], Kraków, 1968
- Garlinski, Jozef, Fighting Auschwitz: the Resistance Movement in the Concentration Camp, Fawcett, 1975, ISBN 0-449-22599-2, reprinted by Time Life Education, 1993. ISBN 0-8094-8925-2 (see also review in The Times)
- Gawron, W. Ochotnik do Oświęcimia [Volunteer for Auschwitz], Calvarianum, Auschwitz Museum, 1992
- Patricelli, M. "Il volontario" [The Volunteer], Laterza 2010, ISBN 88-420-9188-X.
- Wysocki, Wiesław Jan. Rotmistrz Pilecki, Pomost, 1994. ISBN 83-85209-42-5
- Kon Piekarski "Escaping Hell: The Story of a Polish Underground Officer in Auschwitz and Buchenwald", Dundurn Press Ltd., 1989, ISBN 1-55002-071-4, ISBN 978-1-55002-071-7
|Wikiquote has quotations related to: Witold Pilecki|
- Staff correspondent (March 5, 1948), Polish Left-Wing Relations: No Fusion as Yet, London: The Times, pp. 3, retrieved March 12, 2009
- (in English) on YouTube
- (in English) "Witold Pilecki's full report". at Volunteer for Auschwitz (Online, Translated into English for the Let's Reminisce about Witold Pilecki initiative ed.). May 2008.
- (in English) The Murder of Cavalry Captain Witold Pilecki
- (in Polish) Witold Pilecki's report from Auschwitz (rtf) / mirror (HTML)
- (in Polish) Additional reports of Pilecki
- (in Polish) Andrzej M. Kobos, Witold Pilecki w Piekle XX Wieku, Zwoje 5 (9), 1998
- Biography of Witold Pilecki on Diapozytyw
- Józef Garlinski, The Polish Underground Movement and Auschwitz Concentration Camp, 2003
- Episodes from Auschwitz: Witolds Report. Witold Pilecki's time at Auschwitz and post-War fate presented as a graphic history.
- Meet The Man Who Sneaked Into Auschwitz.
- (in English) Witold’s Report from Auschwitz Download (PDF) from http://rtmpilecki.eu/raport-3/ , 2018