U.S. Army soldiers show a group of German civilians from Weimar the corpses found in Buchenwald Concentration Camp
Nazi Germany maintained concentration camps (German: Konzentrationslager, KL or KZ)[a] throughout the territories it controlled before and during the Second World War. The first Nazi camps were erected in Germany in March 1933 immediately after Hitler became Chancellor and his Nazi Party was given control of the police by Reich Interior Minister Wilhelm Frick and Prussian Acting Interior Minister Hermann Göring. Used to hold and torture political opponents and union organizers, the camps initially held around 45,000 prisoners. In 1933–1939, before the onset of war, most prisoners consisted of German Communists, Socialists, Social Democrats, Roma, Jehovah's Witnesses, homosexuals, and persons accused of 'asocial' or socially 'deviant' behavior by the Germans.
Heinrich Himmler's Schutzstaffel (SS) took full control of the police and the concentration camps throughout Germany in 1934–35. The role of the camps expanded to hold so-called "undesirables" such as Jews, Romanis/Sintis, Serbs, Soviet POWs, Poles, disabled people, and clergymen. The number of people in the camps, which had fallen to 7,500, grew again to 21,000 by the start of World War II and peaked at 715,000 in January 1945.
Beginning in 1934 the concentration camps were administered by the Concentration Camps Inspectorate (CCI), which in 1942 was merged into SS-Wirtschafts-Verwaltungshauptamt, and they were guarded by SS-Totenkopfverbände (SS-TV).
Holocaust scholars draw a distinction between concentration camps (described in this article) and extermination camps, which were established by Nazi Germany for the industrial-scale mass murder of Jews in the ghettos by way of gas chambers.
Use of the word "concentration" came from the idea of confining people in one place because they belong to a group that is considered undesirable in some way. The term itself originated in 1897 when the "reconcentration camps" were set up in Cuba by General Valeriano Weyler. In the past, the U.S. government had used concentration camps against Native Americans and the British had also used them during the Second Boer War. Between 1904 and 1908, the Schutztruppe of the Imperial German Army operated concentration camps in German South-West Africa (now Namibia) as part of its genocide of the Herero and Namaqua peoples. The Shark Island Concentration Camp in Lüderitz was the largest camp and the one with the harshest conditions.
When the Nazis came to power in Germany, they quickly moved to suppress all real and potential opposition. The general public was intimidated by the arbitrary psychological terror that was used by the special courts (Sondergerichte). Especially during the first years of their existence when these courts "had a strong deterrent effect" against any form of political protest.
The first camp in Germany, Dachau, was founded in March 1933. The press announcement said that "the first concentration camp is to be opened in Dachau with an accommodation for 5,000 people. All Communists and – where necessary – Reichsbanner and Social Democratic functionaries who endanger state security are to be concentrated there, as in the long run it is not possible to keep individual functionaries in the state prisons without overburdening these prisons." Dachau was the first regular concentration camp established by the German coalition government of the Nazi Party and the Nationalist People's Party (dissolved on 6 July 1933). Heinrich Himmler, then Chief of Police of Munich, officially described the camp as "the first concentration camp for political prisoners."
On 26 June 1933, Himmler appointed Theodor Eicke commandant of Dachau, who in 1934 was also appointed the first Inspector of Concentration Camps (CCI). In addition, the remaining SA-run camps were taken over by the SS. Dachau served as both a prototype and a model for the other Nazi concentration camps. Almost every community in Germany had members who were taken there. The newspapers continuously reported on "the removal of the enemies of the Reich to concentration camps" making the general population more aware of their presence. There were jingles warning as early as 1935: "Dear God, make me dumb, that I may not come to Dachau."
Between 1933 and the fall of Nazi Germany in 1945, more than 3.5 million Germans were forced to spend time in concentration camps and prisons for political reasons, and approximately 77,000 Germans were executed for one or another form of resistance by Special Courts, courts-martial, and the civil justice system. Many of these Germans had served in government, the military, or in civil positions, which enabled them to engage in subversion and conspiracy against the Nazis.
As a result of the Holocaust, the term "concentration camp" carries many of the connotations of "extermination camp" and is sometimes used synonymously. Due to these ominous connotations, the term "concentration camp", originally itself a euphemism, has been replaced by newer terms such as internment camp, resettlement camp, detention facility, etc., regardless of the actual circumstances of the camp, which can vary a great deal.
World War II
After September 1939, with the beginning of the Second World War, concentration camps became places where millions of ordinary people were enslaved as part of the war effort, often starved, tortured and killed. During the war, new Nazi concentration camps for "undesirables" spread throughout the continent. According to statistics by the German Ministry of Justice, about 1,200 camps and subcamps were run in countries occupied by Nazi Germany, while the Jewish Virtual Library estimates that the number of Nazi camps was closer to 15,000 in all of occupied Europe and that many of these camps were run for a limited amount of time before they were closed. Camps were being created near the centers of dense populations, often focusing on areas with large communities of Jews, Polish intelligentsia, Communists or Romani. Since millions of Jews lived in pre-war Poland, most camps were located in the area of the General Government in occupied Poland, for logistical reasons. The location also allowed the Nazis to quickly remove the German Jews from within Germany proper.
By 1940, the CCI came under the control of the Verwaltung und Wirtschaftshauptamt Hauptamt (VuWHA; Administration and Business office) which was set up under Oswald Pohl. Then in 1942, the CCI became Amt D (Office D) of the consolidated main office known as the SS-Wirtschafts-Verwaltungshauptamt (SS Economic and Administrative Department; WVHA) under Pohl. In 1942, the SS built a network of extermination camps to systematically kill millions of prisoners by gassing. The extermination camps (Vernichtungslager) and death camps (Todeslager) were camps whose primary function was genocide. The Nazis themselves distinguished the concentration camps from the extermination camps.The British intelligence service had information about the concentration camps, and in 1942 Jan Karski delivered a thorough eyewitness account to the government.
The two largest groups of prisoners in the camps, both numbering in the millions, were the Polish Jews and the Soviet prisoners of war (POWs) held without trial or judicial process. There were also large numbers of Romani people, ethnic Poles, Serbs, political prisoners, homosexuals, people with disabilities, Jehovah's Witnesses, clergymen, Eastern European intellectuals and others (including common criminals, as the Nazis declared). In addition, a small number of Western Allied aviators were sent to concentration camps as punishment for spying. Western Allied POWs who were Jews, or who were suspected of being Jews by the Nazis, were usually sent to ordinary POW camps; however, a small number of them were sent to concentration camps because of antisemitic policies.
Sometimes the concentration camps were used to hold important prisoners, such as the generals involved in the attempted assassination of Hitler; U-boat Captain-turned-Lutheran pastor Martin Niemöller; and Admiral Wilhelm Canaris, who was interned at Flossenbürg on February 7, 1945, until he was hanged on April 9, shortly before the war's end.
In most camps, prisoners were forced to wear identifying overalls with colored badges according to their categorization: red triangles for Communists and other political prisoners, green triangles for common criminals, pink triangles for homosexual men, purple triangles for Jehovah's Witnesses, black triangles for asocials and the "work shy", yellow triangle for Jews, and later the brown triangle for Romanis.
Many of the prisoners died in the concentration camps due to deliberate maltreatment, disease, starvation, and overwork, or they were executed as unfit for labor. Prisoners were transported in inhumane conditions by rail freight cars, in which many died before reaching their final destination. The prisoners were confined in the boxcars for days or even weeks, with little or no food or water. Many died of dehydration in the intense heat of summer or froze to death in winter. Concentration camps also existed in Germany itself, and while they were not specifically designed for systematic extermination, many of their inmates perished because of harsh conditions or they were executed.
In the spring of 1941, the SS—along with doctors and officials of the T-4 Euthanasia Program—introduced the Action 14f13 programme meant for extermination of selected concentration camp prisoners. The Inspectorate of the Concentration Camps categorized all files dealing with the death of prisoners as 14f, and those of prisoners sent to the T-4 gas chambers as 14f13. Under the language regulations of the SS, selected prisoners were designated for "special treatment (German: Sonderbehandlung) 14f13". Prisoners were officially selected based on their medical condition; namely, those permanently unfit for labor due to illness. Unofficially, racial and eugenic criteria were used: Jews, the handicapped, and those with criminal or antisocial records were selected.:p.144 For Jewish prisoners there was not even the pretense of a medical examination: the arrest record was listed as a physician's "diagnosis".:pp. 147–148 In early 1943, as the need for labor increased and the gas chambers at Auschwitz became operational, Heinrich Himmler ordered the end of Action 14f13.:p.150
After 1942, many small subcamps were set up near factories to provide forced labor. IG Farben established a synthetic rubber plant in 1942 at Monowitz concentration camp (Auschwitz III); other camps were set up next to airplane factories, coal mines and rocket propellant plants. Conditions were brutal and prisoners were often sent to the gas chambers or killed on site if they did not work quickly enough.
On 31 July 1941 Hermann Göring gave written authorization to SS-Obergruppenführer Reinhard Heydrich, Chief of the Reich Main Security Office (RSHA), to prepare and submit a plan for a "total solution of the Jewish question" in territories under German control and to coordinate the participation of all involved government organisations. The resulting Generalplan Ost (General Plan for the East) called for deporting the population of occupied Eastern Europe and the Soviet Union to Siberia, for use as slave labour or to be murdered.
Towards the end of the war, the camps became sites for medical experiments. Eugenics experiments, freezing prisoners to determine how downed pilots were affected by exposure, and experimental and lethal medicines were all tried at various camps. Cold water immersion experiments at Dachau concentration camp were performed by Sigmund Rascher.
Total number of camps and casualties
The lead editors of the Encyclopedia of Camps and Ghettos, 1933–1945 of the United States Holocaust Memorial Museum, Geoffrey Megargee and Martin Dean, cataloged some 42,500 Nazi ghettos and camps throughout Europe, spanning German-controlled areas from France to Russia and Germany itself, operating from 1933 to 1945. They estimate that 15 million to 20 million people died or were imprisoned in the sites.
Some of the most notorious slave labour camps included a network of subcamps. Gross-Rosen had 100 subcamps, Auschwitz had 44 subcamps, Stutthof had 40 sub-camps set up contingently. Prisoners in these subcamps were dying from starvation, untreated disease and summary executions by the tens of thousands already since the beginning of war.
According to the United States Holocaust Memorial Museum (USHMM), the country's official memorial to the Holocaust, "The Holocaust was the murder of six million Jews and millions of others by the Nazis and their collaborators during World War II." The museum puts the total number of murdered during the Holocaust at 17 million: 6 million Jews and 11 million others.
The camps were liberated by the Allied forces between 1944 and 1945. The first major camp, Majdanek, was discovered by the advancing Soviets on July 23, 1944. Auschwitz was liberated, also by the Soviets, on January 27, 1945; Buchenwald by the Americans on April 11; Bergen-Belsen by the British on April 15; Dachau by the Americans on April 29; Ravensbrück by the Soviets on the same day; Mauthausen by the Americans on May 5; and Theresienstadt by the Soviets on May 8. Treblinka, Sobibór, and Bełżec were never liberated, but were destroyed by the Nazis in 1943. Colonel William W. Quinn of the U.S. 7th Army said of Dachau: "There our troops found sights, sounds, and stenches horrible beyond belief, cruelties so enormous as to be incomprehensible to the normal mind."
In most of the camps discovered by the Soviets, almost all the prisoners had already been removed, leaving only a few thousand alive—7,000 inmates were found in Auschwitz, including 180 children who had been experimented on by doctors. Some 60,000 prisoners were discovered at Bergen-Belsen by the British 11th Armoured Division, 13,000 corpses lay unburied, and another 10,000 died from typhus or malnutrition over the following weeks. The British forced the remaining SS guards to gather up the corpses and place them in mass graves.
Types of camps
Historians have divided the Nazi concentration camps into a series of major categories based on purpose, administrative structure, and inmate-population profiles. The system of camps preceded the onset of World War II by several years and evolved gradually.
- Early camps, usually without proper infrastructure, sprang up everywhere in Germany after Hitler became Chancellor in January 1933: rising "like mushrooms after the rain", Himmler recollected. These early camps, also called "Wild camps" because some were set up with little supervision from higher authorities, were overseen by Nazi paramilitaries, by political-police forces, and sometimes by local police authorities. They utilized any lockable larger space, for example: engine rooms, brewery floors, storage facilities, cellars, etc.
- State camps (e.g. Dachau, Oranienburg, Esterwegen) guarded by the SA; prototypes for the future SS concentration camps, with a total of 107,000 prisoners as early as 1935.
- Hostage camps (Geisellager), known also as police prison camps (for example: Sint-Michielsgestel and Haaren) where hostages were held and later killed in reprisal actions.
- Labor camps (Arbeitslager): concentration camps where interned captives had to perform hard physical labor under inhumane conditions and cruel treatment. Some of these were sub-camps, called "Outer Camps" (Aussenlager), built around a larger central camp (Stammlager), or served as "operational camps" established for a temporary need.
- POW camps (Kriegsgefangenen-Mannschafts-Stammlager / Stalag) a.k.a. Main Camps for Enlisted Prisoners of War: concentration camps where enlisted prisoners-of-war were held after capture. The inmates were usually assigned soon to nearby labor camps, (Arbeitskommandos), i.e. the Work Details. POW officers had their own camps (Offizierslager' / Oflag). Stalags were for Army prisoners, but specialized camps (Marinelager / Marlag ("Navy camps") and Marineinterniertenlager / Milag ("Merchant Marine Internment Camps")) existed for the other services. Kriegsgefangenen-Mannschafts-Stammlager Luftwaffe / Stalag Luft ("Air Forces Camps") were the only camps that detained both officers and non-commissioned personnel together.
- Camps for the so-called "rehabilitation and re-education of Poles" (Arbeitserziehungslager – "Work Instruction Camps"): camps where the intelligentsia of the ethnic Poles were held, and "re-educated" according to Nazi values as slaves.
- Collection and Transit camps: camps where inmates were collected (Sammellager) or temporarily held (Durchgangslager / Dulag) and then routed to main camps.
- Extermination camps (Vernichtungslager): these camps differed from the rest, since not all of them also functioned as concentration camps.
None of the categories are independent – one could classify many camps as a mixture of several of the above. All camps had some of the elements of an extermination camp, but systematic extermination of new arrivals by gas chambers only occurred in specialized camps. These were extermination camps, where all new-arrivals were simply killed—the "Aktion Reinhard" camps (Treblinka, Sobibór and Belzec), together with Chelmno. Two others (Auschwitz and Majdanek) operated as combined concentration- and extermination-camps. Others like Maly Trostenets were at times classified[by whom?] as "minor extermination camps".
Though most Nazi concentration and extermination camps were destroyed after the war, some of them were turned into permanent memorials, and museums. In Communist Poland, some camps such as Majdanek, Jaworzno, Potulice and Zgoda were used by the Soviet NKVD to hold German prisoners of war, suspected or confirmed Nazis and Nazi collaborators, anti-Communists and other political prisoners, as well as civilian members of the German-speaking, Silesian and Ukrainian ethnic minorities. Currently, there are memorials to the victims of both Nazi and communist camps at Potulice; they have helped to enable a German-Polish discussion on historical perceptions of World War II. In East Germany, the concentration camps at Buchenwald and Sachsenhausen were used for similar purposes. Dachau concentration camp was used as a detention centre for the arrested Nazis.
- Nikolaus Wachsmann (KL: A History of the Nazi Concentration Camps, 2015): "The term "KL" remained the main SS abbreviation for concentration camps throughout the Third Reich. For popular references to "KL", see The Times, January 24, 1935, NCC, doc. 277. Prisoners also applied the term, though they more commonly used the harsher sounding "KZ", which became the standard abbreviaton in postwar Germany."
The Times (24 January 1935): "Permits to visit are no longer obtainable, and everyone knows that the threat of "K.L."—the popular contraction for Konzentrationslager—is meant to be a very unpleasant one."
- Jewish Virtual Library (2014). "Main Concentration Camps". The Holocaust: Concentration Camps. AICE. Retrieved 17 December 2014.
- Wachsmann 2015, p. 635, note 9.
- "The German Camps". The Times, 24 January 1935, issue 46970, p. 13.
- Evans 2003, pp. 344–345.
- Evans 2005, p. 81.
- Holocaust Encyclopedia, Nazi Camps. Introduction. United States Holocaust Memorial Museum.
- Evans 2005, p. 85.
- Revisiting the National Socialist Legacy: Coming to Terms With Forced Labor, Expropriation, Compensation, and Restitution page 84 Oliver Rathkolb
- Gumkowski, Janusz; Leszczynski, Kazimierz; Robert, Edward (translator) (1961). Hitler's Plans for Eastern Europe. Poland Under Nazi Occupation (First ed.). Polonia Pub. House. p. 219. ASIN B0006BXJZ6. Archived from the original (Paperback) on 9 April 2011. Retrieved 12 March 2014. at Wayback machine.
- Evans 2005, pp. 87–90.
- "No mercy (Ehrenhain Zeithain)". 2008-01-06. Archived from the original on 2008-01-06. Retrieved 2019-05-05.
- Evans 2005, p. 90.
- Evans 2008, p. 367.
- Peter Hoffmann "The History of the German Resistance, 1933–1945" p. xiii
- Andrew Szanajda "The restoration of justice in postwar Hesse, 1945–1949" p. 25 "In practice, it signified intimidating the public through arbitrary psychological terror, operating like the courts of the Inquisition." "The Sondergerichte had a strong deterrent effect during the first years of their operation, since their rapid and severe sentencing was feared."
- "Ein Konzentrationslager für politische Gefangene in der Nähe von Dachau". Münchner Neueste Nachrichten ("The Munich Latest News") (in German). The Holocaust History Project. 21 March 1933. Archived from the original on 6 May 2013.
- McNab 2009, p. 137.
- Kershaw 2008, pp. 308–314.
- Evans 2005, pp. 31–35, 39.
- Janowitz, Morris (September 1946). "German Reactions to Nazi Atrocities". The American Journal of Sociology. The University of Chicago Press. 52 (2): 141–146. doi:10.1086/219961. JSTOR 2770938.
- David Clay, "Contending with Hitler: Varieties of German Resistance in the Third Reich", p. 122 (1994) ISBN 0-521-41459-8
- Otis C. Mitchell, "Hitler's Nazi state: the years of dictatorial rule, 1934–1945" (1988), p. 217
- Producer, By Wayne Drash CNN.com Senior. "Army to honor soldiers enslaved by Nazis - CNN.com". www.cnn.com.
- "List of concentration camps and their outposts" (in German). Federal Ministry of Justice and Consumer Protection.
- Concentration Camp Listing Sourced from Van Eck, Ludo Le livre des Camps. Belgium: Editions Kritak; and Gilbert, Martin Atlas of the Holocaust. New York: William Morrow 1993 ISBN 0-688-12364-3. In this on-line site are published the names of 149 camps and 814 subcamps, organized by country.
- "List of national socialist camps and detention sites 1933 – 1945". Germany – A Memorial. Bettina Sarnes, Holger Sarnes. So far 3600 sites are recorded on this website.
- Weale 2012, p. 115.
- "Diary of Johann Paul Kremer". www.holocaust-history.org. Archived from the original on May 14, 2008.
- Overy, Richard. Interrogations, pp. 356–57. Penguin 2002. ISBN 978-0-14-028454-6
- One of the best-known examples was the 168 British Commonwealth and US aviators held for a time at Buchenwald concentration camp. (See: luvnbdy/secondwar/fact_sheets/pow Veterans Affairs Canada, 2006, "Prisoners of War in the Second World War" and National Museum of the USAF, "Allied Victims of the Holocaust" Archived 2014-02-23 at the Wayback Machine.) Two different reasons are suggested for this: the Nazis wanted to make an example of theTerrorflieger ("terror-instilling aviators"), or they classified the downed fliers as spies because they were out of uniform, carrying false papers, or both when apprehended.
- See, for example, Joseph Robert White, 2006, "Flint Whitlock. Given Up for Dead: American GIs in the Nazi Concentration Camp at Berga" Archived 2007-06-11 at the Wayback Machine (book review)
- "Germany and the Camp System" PBS Radio website
- "Holocaust Timeline: The Camps". fcit.usf.edu. Archived from the original on January 8, 2010.
- Friedlander, Henry (1995). The Origins of Nazi Genocide: From Euthanasia to the Final Solution. Chapel Hill: University of North Carolina Press. p. 144.
- Browning 2004, p. 315.
- Snyder 2010, p. 416.
- Robert L. Berger, M.D. (1990). "Nazi Science – The Dachau Hypothermia Experiments". The New England Journal of Medicine. 322 (20): 1435–1440. doi:10.1056/NEJM199005173222006. PMID 2184357.
- Lichtblau, Eric (March 1, 2013). "The Holocaust Just Got More Shocking". The New York Times. Retrieved 27 June 2014.
When the research began in 2000, Dr. Megargee said he expected to find perhaps 7,000 Nazi camps and ghettos, based on postwar estimates. But the numbers kept climbing – first to 11,500, then 20,000, then 30,000, and now 42,500.For the map of more than 1,000 locations, see: Map of Ghettos for Jews in Eastern Europe. The New York Times. Source: USHMM.
- "Historia KL Gross-Rosen". Gross-Rosen Museum. 2014. Retrieved 19 February 2014.
- Auschwitz-Birkenau State Museum (2014), Podobozy KL Auschwitz (Subcamps of KL Auschwitz). Retrieved 6 October 2014.
- "Stutthof, the first Nazi concentration camp outside Germany". Jewishgen.org. Retrieved 2013-01-21.
- "Stutthof (Sztutowo): Full Listing of Camps, Poland" (Introduction). Jewish Virtual Library. Retrieved 2014-10-07.
Source: "Atlas of the Holocaust" by Martin Gilbert (1982).
- Marek Przybyszewski, IBH Opracowania – Działdowo jako centrum administracyjne ziemi sasińskiej (Działdowo as centre of local administration). Internet Archive, 22 October 2010.
- "Animated Map". Ushmm.org. Retrieved 2011-02-20.
- "Documenting Numbers of Victims of the Holocaust and Nazi Persecution". encyclopedia.ushmm.org. Retrieved 2019-01-29.
- "Holocaust Encyclopedia | United States Holocaust Memorial Museum". encyclopedia.ushmm.org. Retrieved 2019-01-29.
- Stone, Dan G.; Wood, Angela (2007). Holocaust: The events and their impact on real people, in conjunction with the USC Shoah Foundation Institute for Visual History and Education. p. 144. ISBN 978-0-7566-2535-1.
- Holocaust: The events and their impact on real people, DK Publishing in conjunction with the USC Shoah Foundation Institute for Visual History and Education, p. 146.
- A film with scenes from the liberation of Dachau, Buchenwald, Belsen and other Nazi concentration camps, supervised by the British Ministry of Information and the American Office of War Information, was begun but never finished or shown. It lay in archives until first aired on PBS's Frontline on May 7, 1985. The film, partly edited by Alfred Hitchcock, can be seen online at Memory of the Camps.
- Holocaust: The events and their impact on real people, DK Publishing in conjunction with the USC Shoah Foundation Institute for Visual History and Education, p. 145.
- "The 11th Armoured Division (Great Britain)", United States Holocaust Memorial Museum.
- "Bergen-Belsen", United States Holocaust Memorial Museum.
- Wiesel, Elie. After the Darkness: Reflections on the Holocaust, Schocken Books, p. 41.
- Moshe Lifshitz, "Zionism". (ציונות), p. 304
- William L. Shirer (2002). "The Rise and Fall of the Third Reich". p. 967. Random House
- Wachsmann 2015, p. 84.
- Wachsmann 2015, pp. 38–45.
- Wachsmann 2015, 88.
- Federal Archives (2010). "Police prison Camps and Police Prisons in the Occupied Territories". Retrieved August 13, 2015.
- "One place, different memories". Geschichtswerkstatt Europa. 2010. Archived from the original on July 16, 2011. Retrieved July 26, 2012.
- "Ausstellung der KZ-Gedenkstätte Dachau". Dachau Concentration Camp Memorial Site (in German). Archived from the original on 18 January 2012.
- Browning, Christopher R. (2004). The Origins of the Final Solution : The Evolution of Nazi Jewish Policy, September 1939 – March 1942. Comprehensive History of the Holocaust. Lincoln: University of Nebraska Press. ISBN 978-0-8032-1327-2.
- Evans, Richard J. (2003). The Coming of the Third Reich. Penguin Group. ISBN 978-0-14-303469-8.
- Evans, Richard J. (2005). The Third Reich in Power. New York: Penguin Group. ISBN 978-0-14-303790-3.
- Evans, Richard J. (2008). The Third Reich at War. New York: Penguin Group. ISBN 978-0-14-311671-4.
- Kershaw, Ian (2008). Hitler: A Biography. W. W. Norton & Company. ISBN 978-0-393-06757-6.
- McNab, Chris (2009). The SS: 1923–1945. London: Amber Books. ISBN 978-1-906626-49-5.
- Snyder, Timothy (2010). Bloodlands: Europe between Hitler and Stalin. New York: Basic Books. ISBN 978-0-465-00239-9.
- Wachsmann, Nikolaus (2015). KL: A History of the Nazi Concentration Camps. New York: Farrar, Strauss and Giroux. ISBN 978-0-374-11825-9.
- Weale, Adrian (2012). Army of Evil: A History of the SS. New York: Caliber Printing. ISBN 978-0-451-23791-0.
- Megargee, Geoffrey P., ed. (2012). Encyclopedia of Camps and Ghettos, 1933–1945. in association with United States Holocaust Memorial Museum. Bloomington: Indiana University Press. ISBN 978-0-253-35599-7.
|Wikimedia Commons has media related to Nazi concentration camps.|
- Nazi Concentration Camps newsreel on YouTube
- The World of the Camps: Labor and Concentration Camps on the Yad Vashem website
- Pages show pictures and videos of the day taken at places connected with World War II (Second World War)
- Yad VaShem—The Holocaust Martyrs' and Heroes' Remembrance Authority
- United States Holocaust Memorial Museum Personal Histories – Camps at United States Holocaust Memorial Museum
- The Holocaust History Project
- Official U.S. National Archive Footage of Nazi camps
- Concentration Camps at Jewish Virtual Library
- Memory of the Camps, as shown by PBS Frontline
- Podcast with one of 2,000 Danish policemen in Buchenwald
- Nazi Concentration Camp Page with links to original documents