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Kazimierz Leski, nom de guerre Bradl (21 June 1912 — 27 May 2000), was a Polish engineer, co-designer of the Polish submarines ORP Sęp and ORP Orzeł, a fighter pilot, and an officer in World War II Home Army's intelligence and counter-intelligence.
Kazimierz Leski was born in Warsaw on June 21, 1912. His father, Major Juliusz Leski, had been an engineer and a pioneer of Poland's arms industry. following the Polish-Bolshevik War. However, he fell out of grace after the May 1926 Coup d'État, when he remained loyal to the government. Because of that, Kazimierz had to work as a railway worker to pay for his studies at the Wawelberg and Rotwand College in Warsaw. He also got a simple job in the foundry of the Pocisk munitions works. To study professional books, he learned English, Russian and German—abilities that proved invaluable later. Early on, he also learned French.
Immediately upon graduating in 1936, he was offered a job at the Nederlandsche Vereenigde Scheepsbouw Bureaux design bureau (NVSB) in The Hague. The company was the leading design bureau in the Netherlands, working for all the major naval shipyards in the country. Initially working as a draughtsman, Leski learned the Dutch language, which allowed him to rise quickly through the ranks of the design bureau. His career in the Dutch shipbuilding industry was significantly sped up by the fact that Holland won a contract for construction of two modern Orzeł class submarines for the Polish Navy. He started additional studies at the Maritime Faculty of the Delft University of Technology and became one of the heads of the Submarine Division of the NVSB, responsible for the comparison of the projects with the supplied machinery. After he patented a new mounting for the ballast tank funnels, he was promoted and became an independent specialist. Soon afterwards Leski became the head designer for the Orzeł class submarines: the future ORP Orzeł and ORP Sęp, as well as the deputy to the lead constructor Niemeier.
Mobilized prior to the 1939 German invasion of Poland, he joined the Polish Air Force. On September 17, 1939, his Lublin R-XIII F plane was shot down by the Soviets, and Leski was badly injured. Soon after, he was taken prisoner of war by Soviet soldiers but managed to escape and reach Lwów. From there he crossed the new Soviet-German "border of peace" and in October 1939 moved to Warsaw, where he joined an underground organization, Muszkieterowie (the "Musketeers").
The organization, which was later integrated into the Home Army (Armia Krajowa), was an en cadre military organization primarily focused on intelligence. Thus Leski– still suffering from wounds received in September 1939 and unfit for front-line service in the Forest Units– became a leading intelligence officer with the Musketeers and later with the Home Army.
His most important achievements included a complete list of German military units, their insignia, numbers and dispositions. He and his cell also prepared detailed reports on the logistics and transport of German units bound for the Eastern Front, and on the state of bridges, railways and roads in German-held Europe. Leski's unit also began developing a communications network spanning German-occupied Europe from Poland to Portugal, France and finally the Polish Government in Exile in the United Kingdom.
In 1941 Leski made his first trip as a courier to France. In his first trip, he posed as a Lieutenant of the Wehrmacht. However, he decided to promote himself to the rank of Generalmajor for all other trips in order to be able to travel first class, as his wounds made it impossible for him to travel in crowded, third-class railway cars. As General Julius von Halmann he managed to cross Europe several times in a row without his true identity being revealed. The disguise, his fluent knowledge of several languages and his excellently forged documents also allowed him to witness several events he did not plan. Among them was his 1942 visit to the Atlantic Wall construction site, which was made possible because he convinced one of the passengers in his car that his superiors might want to build a similar line of fortifications in the Ukraine. On another occasion he visited the field staff of Field Marshal Gerd von Rundstedt. Apart from his service in intelligence and counter-intelligence, he also took over a cell focused on smuggling information and people in and out of German prisons in occupied Poland, notably the infamous Pawiak.
At the outbreak of the Warsaw Uprising in August 1944, Kazimierz Leski was not commissioned. However, with a group of volunteers he formed an infantry battalion, Miłosz, and became commander of its first company, Bradl. The unit fought with distinction in the area of Triple Cross Square in the Warsaw City Center. For his gallantry, Leski was promoted to captain and awarded several decorations, including the Silver Virtuti Militari, the Gold and Silver Crosses of Merit with Swords, and three Crosses of Valor.
After the Uprising's capitulation, Leski managed to escape from a column of prisoners and, pretending to be a civilian, returned to the underground. He became commander of the Home Army Western Area and later the chief of the Armed Forces Delegation for Poland.
After the communist takeover of Poland he gradually dismantled his underground net and moved to Gdańsk. A member of the Wolność i Niezawisłość anti-communist resistance, under the false name Leon Juchniewicz he became the first managing director of the demolished Gdańsk Shipyard. His tasks included reconstructing the shipyard, which had been devastated by Allied air raids and by the withdrawing Germans. In August 1945 he received the communist regime's highest civilian award, but later the same day was arrested by the secret police, who had discovered his true identity.
Charged with attempting to overthrow the regime, he was sentenced to 12 years in prison. The sentence was later commuted to six years. However, in 1951 he was not released. Instead, he was charged with having collaborated with the German occupation forces and held in solitary confinement and brutally tortured.
After the deaths of Soviet leader Joseph Stalin (1953) and Polish leader Bolesław Bierut (1956), Leski was freed and soon rehabilitated. Still, he could not find a job, as Poland's communist authorities continued to view former Home Army soldiers with suspicion. He had to give up work in the shipbuilding industry and worked as a clerk at the PWT publishing house. Eventually he became a member of the Polish Academy of Sciences. Awarded a doctorate, for political reasons he could not receive the rank of professor for his work on computer analysis of natural language codes. Nevertheless, he continued his scientific work, publishing seven books and over 150 other publications. He also patented inventions.
Largely unknown to the public, in 1989—after Solidarity's victory and the fall of the communist regime—he published his memoirs, which became a best-seller. He received the Polish PEN Club Prize and the Polish Writers' Society in Exile Award.
- Jan Karski
- Jan Nowak-Jeziorański
- Krystyna Skarbek (was in contact with the "Musketeers" organization)
- List of Poles
- Among other things, he founded the Pocisk munitions works in Warsaw, the explosives factories at Rembertów and Boryszew, and the predecessor of the PZL works at Okęcie.
- (Polish) Jerzy Stefan Stawiński (July 2006). "Stawiński nie do zobaczenia". Gazeta Wyborcza (2006–07–01). Retrieved 2006-10-20.
- (Polish) ELEM (October 2000). "Kazimierz Leski". Gazeta Wyborcza (255). Retrieved 2006-10-20.
- (Polish) Regina Domańska (1988). Pawiak - kaźń i heroizm (Pawiak: slaughter and heroism). Warsaw: Książka i Wiedza. p. 138. ISBN 83-05-11813-4.
- Named after Leski's nom-de-guerre. Throughout the war, he used several dozen false names and pseudonyms
- (Polish) "Kazimierz Leski: honorowy obywatel Warszawy". Official website of the city of Warsaw. City of Warsaw. 2005. Retrieved 2006-10-19.
- (Polish) Kazimierz Leski. (1989). Życie niewłaściwie urozmaicone: wspomnienia oficera wywiadu i kontrwywiadu AK (A Checkered Life: Memoirs of a Home Army Intelligence and Counterintelligence Officer). Warsaw: Wydawnictwo Naukowe PWN. ISBN 83-01-08351-4. 600 pp.
- (Polish) Cpt. Stanisław Wielebski (2003). "Kazimierz Leski". ORP Orzeł. Retrieved 2006-10-19.
- (Polish) "Kazimierz Leski". Gazeta Wyborcza (4/07/2001): 11. July 2001. Retrieved 2006-10-20.