' (, ''Security Service''), full title ' (Security Service of the '' Reichsführer-SS''), or SD, was the intelligence agency of the SS and the
Nazi Party The Nazi Party, officially the National Socialist German Workers' Party (german: Nationalsozialistische Deutsche Arbeiterpartei or NSDAP), was a far-right political party in Germany active between 1920 and 1945 that created and supported t ...
Nazi Germany Nazi Germany (lit. "National Socialist State"), ' (lit. "Nazi State") for short; also ' (lit. "National Socialist Germany") (officially known as the German Reich from 1933 until 1943, and the Greater German Reich from 1943 to 1945) was ...
. Established in 1931, the SD was the first Nazi intelligence organization and the Gestapo (formed in 1933) was considered its
sister organization A sister organization is an agency or body which is nearly or completely dependent upon another organization to exist. Sister organizations may exist in several different fields from business, government, law enforcement, and within the military. ...
through the integration of SS members and operational procedures. The SD was administered as an independent SS office between 1933 and 1939. That year, the SD was transferred over to the Reich Security Main Office (''Reichssicherheitshauptamt''; RSHA), as one of its seven departments. Its first director,
Reinhard Heydrich Reinhard Tristan Eugen Heydrich ( ; ; 7 March 1904 – 4 June 1942) was a high-ranking German SS and police official during the Nazi era and a principal architect of the Holocaust. He was chief of the Reich Security Main Office (inc ...
, intended for the SD to bring every single individual within the Third Reich's reach under "continuous supervision". Following Germany's defeat in
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing ...
, the tribunal at the
Nuremberg trials The Nuremberg trials were held by the Allies against representatives of the defeated Nazi Germany, for plotting and carrying out invasions of other countries, and other crimes, in World War II. Between 1939 and 1945, Nazi Germany invaded ...
officially declared that the SD was a criminal organisation, along with the rest of Heydrich's RSHA (including the Gestapo) both individually and as branches of the SS in the collective. Heydrich was assassinated in 1942; his successor, Ernst Kaltenbrunner, was convicted of war crimes and
crimes against humanity Crimes against humanity are widespread or systemic acts committed by or on behalf of a '' de facto'' authority, usually a state, that grossly violate human rights. Unlike war crimes, crimes against humanity do not have to take place within th ...
at the Nuremberg trials, sentenced to death and hanged in 1946.



The SD, one of the oldest security organizations of the SS, was first formed in 1931 as the ''Ic-Dienst'' (Intelligence Service) operating out of a single apartment and reporting directly to
Heinrich Himmler Heinrich Luitpold Himmler (; 7 October 1900 – 23 May 1945) was of the (Protection Squadron; SS), and a leading member of the Nazi Party of Germany. Himmler was one of the most powerful men in Nazi Germany and a main architect of th ...
. Himmler appointed a former junior naval officer,
Reinhard Heydrich Reinhard Tristan Eugen Heydrich ( ; ; 7 March 1904 – 4 June 1942) was a high-ranking German SS and police official during the Nazi era and a principal architect of the Holocaust. He was chief of the Reich Security Main Office (inc ...
, to organise the small agency. The office was renamed ''Sicherheitsdienst'' (SD) in the summer of 1932. The SD became more powerful after the
Nazi Party The Nazi Party, officially the National Socialist German Workers' Party (german: Nationalsozialistische Deutsche Arbeiterpartei or NSDAP), was a far-right political party in Germany active between 1920 and 1945 that created and supported t ...
took control of Germany in 1933 and the SS started infiltrating all leading positions of the security apparatus of the Reich. Even before Hitler became Chancellor in January 1933, the SD was a veritable "watchdog" over the SS and over members of the Nazi Party and played a critical role in consolidating political-police powers into the hands of Himmler and Heydrich.

Growth of SD and SS power

Once Hitler was appointed Chancellor by German President Paul von Hindenburg, he quickly made efforts to manipulate the aging president. On 28 February 1933, Hitler convinced Hindenburg to declare a state of emergency which suspended all civil liberties throughout Germany, due at least in part to the
Reichstag fire The Reichstag fire (german: Reichstagsbrand, ) was an arson attack on the Reichstag building, home of the German parliament in Berlin, on Monday 27 February 1933, precisely four weeks after Nazi leader Adolf Hitler was sworn in as Chancellor of ...
on the previous night. Hitler assured Hindenburg throughout that he was attempting to stabilize the tumultuous political scene in Germany by taking a "defensive measure against Communist acts of violence endangering the state". Wasting no time, Himmler set the SD in motion as they began creating an extensive card-index of the Nazi regime's political opponents, arresting labor organizers, socialists, Jewish leaders, journalists, and communists in the process, sending them to the newly established prison facility near Munich, Dachau. Himmler's SS and SD made their presence felt at once by helping rid the regime of its known political enemies and its perceived ones, as well. As far as Heydrich and Himmler were concerned, the SD left their mission somewhat vaguely defined so as to "remain an instrument for all eventualities". One such eventuality would soon arise. For a while, the SS competed with the '' Sturmabteilung'' (SA) for influence within Germany. Himmler distrusted the SA and came to deplore the "rabble-rousing" brownshirts (despite once having been a member) and what he saw as indecent sexual deviants amid its leadership. At least one pretext to secure additional influence for Himmler's SS and Heydrich's SD in "protecting" Hitler and securing his absolute trust in their intelligence collection abilities, involved thwarting a plot from Ernst Roehm's SA using subversive means. On 20 April 1934 Hermann Göring handed over control of the ''Geheime Staatspolizei'' ( Gestapo) to Himmler. Heydrich, named chief of the Gestapo by Himmler on 22 April 1934, also continued as head of the SD. These events further extended Himmler's control of the security mechanism of the Reich, which by proxy also strengthened the surveillance power of Heydrich's SD, as both entities methodically infiltrated every police agency in Germany. Subsequently, the SD was made the sole "party information service" on 9 June 1934. Under pressure from the '' Reichswehr'' (German armed forces) leadership (whose members viewed the enormous armed forces of the SA as an existential threat) and with the collusion of Göring,
Joseph Goebbels Paul Joseph Goebbels (; 29 October 1897 – 1 May 1945) was a German Nazi politician who was the ''Gauleiter'' (district leader) of Berlin, chief propagandist for the Nazi Party, and then Reich Minister of Propaganda from 1933 to 19 ...
, the Gestapo and SD, Hitler was led to believe that Röhm's SA posed a serious conspiratorial threat requiring a drastic and immediate solution. For its part, the SD provided fictitious information that there was an assassination plot on Hitler's life and that an SA putsch to assume power was imminent since the SA were allegedly amassing weapons. Additionally, reports were coming into the SD and Gestapo that the vulgarity of the SA's behavior was damaging the party and was even making antisemitism less palatable. On 30 June 1934 the SS and Gestapo acted in coordinated mass arrests that continued for two days. The SS took one of its most decisive steps in eliminating its competition for command of security within Germany and established itself firmly in the Nazi hierarchy, making the SS and its intelligence organ, the SD, responsible only to the Führer. The purge became known as the
Night of the Long Knives The Night of the Long Knives ( German: ), or the Röhm purge (German: ''Röhm-Putsch''), also called Operation Hummingbird (German: ''Unternehmen Kolibri''), was a purge that took place in Nazi Germany from 30 June to 2 July 1934. Chancellor A ...
, with up to 200 people killed in the action. Moreover, the brutal crushing of the SA and its leadership sent a clear message to everyone that opposition to Hitler's regime could be fatal. It struck fear across the Nazi leadership as to the tangible concern of the reach and influence of Himmler's intelligence collection and policing powers.

SD and Austria

During the autumn of 1937, Hitler secured Mussolini's support to annex
Austria Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populou ...
(Mussolini was originally apprehensive of the Nazi takeover of Austria) and informed his generals of his intentions to invade both Austria and Czechoslovakia. Getting Mussolini to approve political intrigue against Austria was a major accomplishment, as the Italian ''Duce'' had expressed great concern previously in the wake of an Austrian SS unit's attempt to stage a coup not more than three weeks after the Röhm affair, an episode that embarrassed the SS, enraged Hitler, and ended in the assassination of Austrian Chancellor Engelbert Dollfuss on 25 July 1934. Nonetheless, to facilitate the incorporation of Austria into the greater Reich, the SD and Gestapo went to work arresting people immediately, using lists compiled by Heydrich. Heydrich's SD and Austrian SS members received financing from Berlin to harass Austrian Chancellor von Schuschnigg's government all throughout 1937. One section of the SD that was nothing more than a front for subversive activities against Austria ironically promoted "German-Austrian peace". Throughout the events leading to the '' Anschluß'' and even after the Nazis marched into Austria on 12 March 1938, Heydrich – convinced that only his SD could pull off a peaceful union between the two German-speaking nations – organized demonstrations, conducted clandestine operations, ordered terror attacks, distributed propaganda materials, encouraged the intimidation of opponents, and had his SS and SD personnel round-up prominent anti-Nazis, most of whom ended up in Mauthausen concentration camp The coordinated efforts of the SiPo and Heydrich's SD during the first days of the ''Anschluß'' effectively eliminated all forms of possible political, military and economic resistance within Austria. Once the annexation became official, the Austrian police were immediately subordinated to Heydrich's SD, the SS and Gestapo. Machinations by the SD, the Gestapo, and the SS helped to bring Austria fully into Hitler's grasp and on 13 March 1938, he signed into law the union with Austria as tears streamed down his face.

"Case Green" and the Sudetenland

Concomitant to its machinations against Austria, the SD also became involved in subversive activities throughout Czechoslovakia. Focusing on the
Sudetenland The Sudetenland ( , ; Czech and sk, Sudety) is the historical German name for the northern, southern, and western areas of former Czechoslovakia which were inhabited primarily by Sudeten Germans. These German speakers had predominated in th ...
with its 3 million ethnic Germans and the disharmony there which the Czech government could not seem to remedy, Hitler set Heydrich's SD in motion in what came to be known as "Case Green". Passed off as a mission to liberate
Sudeten Germans German Bohemians (german: Deutschböhmen und Deutschmährer, i.e. German Bohemians and German Moravians), later known as Sudeten Germans, were ethnic Germans living in the Czech lands of the Bohemian Crown, which later became an integral part ...
from alleged Czech persecution, Case Green was in fact a contingency plan to outright invade and destroy the country, as Hitler intended to "wipe Czechoslovakia off the map." This operation was akin to earlier SD efforts in Austria; however, unlike Austria, the Czechs fielded their own Secret Service, against which Heydrich had to contend. Once "Case Green" began, Heydrich's SD spies began covertly gathering intelligence, even going so far as having SD agents use their spouses and children in the cover scheme. The operation covered every conceivable type of intelligence data, using a myriad of cameras and photographic equipment, focusing efforts on important strategic locations like government buildings, police stations, postal services, public utilities, logistical routes, and above all, airfields. Hitler worked out a sophisticated plan to acquire the Sudetenland, including manipulating Slovak nationalists to vie for independence and the suppression of this movement by the Czech government. Under directions from Heydrich, SD operative Alfred Naujocks was re-activated to engage in sabotage activities designed to incite a response from the Slovaks and the Czechs, a mission that ultimately failed. In June 1938 a directive from the SD head office indicated that Hitler issued an order at Jueterbog to his generals to prepare for the invasion of Czechoslovakia. To hasten a presumed heavy response from the French, British, and Czechs, Hitler then upped the stakes and claimed that the Czechs were slaughtering Sudeten Germans. He demanded the unconditional and prompt cession of the Sudetenland to Germany in order to secure the safety of endangered ethnic Germans. Around this time, early plots by select members of the German General Staff emerged, plans which included ridding themselves of Hitler. Eventually a diplomatic showdown pitting Hitler against the governments of Czechoslovakia, Great Britain, and France, whose tepid reaction to the Austrian Anschluss had precipitated this crisis to some degree, ensued. The Sudetenland Crisis came to an end when
Neville Chamberlain Arthur Neville Chamberlain (; 18 March 18699 November 1940) was a British politician of the Conservative Party who served as Prime Minister of the United Kingdom from May 1937 to May 1940. He is best known for his foreign policy of appeasem ...
and Hitler signed the Munich Agreement on 29 September 1938, effectively ceding the Sudetenland to Nazi Germany. Involvement in international affairs by the SD certainly did not end there and the agency remained active in foreign operations to such a degree that the head of the Reich Foreign Ministry office,
Joachim von Ribbentrop Ulrich Friedrich Wilhelm Joachim von Ribbentrop (; 30 April 1893 – 16 October 1946) was a German politician and diplomat who served as Minister of Foreign Affairs of Nazi Germany from 1938 to 1945. Ribbentrop first came to Adolf Hitler's n ...
, complained of their meddling, since Hitler would apparently make decisions based on SD reports without consulting him. According to historian Richard Breitman, there was animosity between the SS leadership and Ribbentrop's Foreign Office atop their "jurisdictional disputes".

Intrigue against Poland

Aside from its participation in diminishing the power of the SA and its scheme to kill Ernst Roehm, the SD took part in international intrigue, first by activities in Austria, again in Czechoslovakia, and then by helping provoke the "reactive" war against Poland. Code-named " Operation Himmler" and part of Hitler's plan to justify an attack upon Poland, the SD's clandestine activity for this mission included faking a Polish attack against "innocent Germans" at a German radio station in Gleiwitz. The SD took concentration-camp inmates condemned to die, and fitted them with Polish Army uniforms which Heinz Jost had acquired from Admiral Wilhelm Canaris' ''
Abwehr The ''Abwehr'' ( German for ''resistance'' or ''defence'', but the word usually means ''counterintelligence'' in a military context; ) was the German military-intelligence service for the '' Reichswehr'' and the ''Wehrmacht'' from 1920 to 1944. ...
'' (military intelligence). Leading this mission and personally selected by Heydrich was SS veteran Alfred Naujocks, who later reported during a War Criminal proceeding that he brought a Polish-speaking German along so he could broadcast a message in Polish from the German radio station "under siege" to the effect that it was time for an all out confrontation between Germans and Poles. To add documented proof of this attack, the SD operatives placed the fictitious Polish troops (killed by lethal injection, then shot for appearance) around the "attacked" radio station with the intention of taking members of the press to the site of the incident. Immediately in the wake of the staged incidents on 1 September 1939, Hitler proclaimed from the Reichstag in a famous radio address that German soldiers had been "returning" fire since 5:45 in the morning, setting the Second World War in Europe into motion.

Tasks and general structure

The SD was tasked with the detection of actual or potential enemies of the Nazi leadership and the neutralization of such opposition, whether internal or external. To fulfill this task, the SD developed an organization of agents and informants throughout the Reich and later throughout the occupied territories, all part of the development of an extensive SS state and a totalitarian regime without parallel. The organization consisted of a few hundred full-time agents and several thousand informants. Historian George C. Browder writes that SD regiments were comparable to SS regiments, in that:
SD districts (''Bezirke'') emerged covering several Party circuits (''Kreis'') or an entire district (''Gau''). Below this level, SD sub-districts (''Unterbezirke'') slowly developed. They were originally to cover a single ''Kreis'', and, in turn, to be composed of wards (''Revier''), but such an ambitious network never emerged. Eventually, the SD-sub-districts acquired the simple designation of 'outposts' (''Aussenstellen'') as the lowest level-office in the field structure.
The SD was mainly an information-gathering agency, while the Gestapo—and to a degree the Criminal Police (''
Kriminalpolizei ''Kriminalpolizei'' (, "criminal police") is the standard term for the criminal investigation agency within the police forces of Germany, Austria, and the German-speaking cantons of Switzerland. In Nazi Germany, the Kripo was the criminal pol ...
'' or Kripo)—was the executive agency of the political-police system. The SD and Gestapo did have integration through SS members holding dual positions in each branch. Nevertheless, there was some jurisdictional overlap and operational conflict between the SD and Gestapo. In addition, the Criminal Police kept a level of independence since its structure had been longer-established. As part and parcel of its intelligence operations, the SD carefully tracked foreign opinion and criticism of Nazi policies, censoring when necessary and likewise publishing hostile political cartoons in the SS weekly magazine, ''
Das Schwarze Korps ''Das Schwarze Korps'' (; German for "The Black Corps") was the official newspaper of the '' Schutzstaffel'' (SS). This newspaper was published on Wednesdays and distributed free of charge. All SS members were encouraged to read it. The chief edi ...
''. An additional task assigned to the SD and the Gestapo involved keeping tabs on the morale of the German population at large, which meant they were charged to "carefully supervise the political health of the German ethnic body" and once any symptoms of "disease and germs" appeared, it was their job to "remove them by every appropriate means". Regular reports—including opinion polls, press dispatches, and information bulletins were established. These were monitored and reviewed by the head of the Inland-SD,
Otto Ohlendorf Otto Ohlendorf (; 4 February 1907 – 7 June 1951) was a German SS functionary and Holocaust perpetrator during the Nazi era. An economist by education, he was head of the (SD) Inland, responsible for intelligence and security within Ger ...
(responsible for intelligence and security within Germany) and by the former Heidelberg professor and SD member . This activity aimed to control and assess the "life domain" or ''Lebensgebiet'' of the German population. Gathered information was then distributed by the SD through secret internal political reports entitled ''Meldungen aus dem Reich'' (reports from the Reich) to the upper echelons of the Nazi Party, enabling Hitler's régime to evaluate the general morale and attitude of the German people so they could be manipulated by the
Nazi propaganda The propaganda used by the German Nazi Party in the years leading up to and during Adolf Hitler's dictatorship of Germany from 1933 to 1945 was a crucial instrument for acquiring and maintaining power, and for the implementation of Nazi pol ...
machine in timely fashion. When the Nuremberg Laws were passed in 1935, the SD reported that the measures against the Jews were well received by the German populace. In 1936, the police were divided into the '' Ordnungspolizei'' (Orpo or Order Police) and the ''
Sicherheitspolizei The ''Sicherheitspolizei'' ( en, Security Police), often abbreviated as SiPo, was a term used in Germany for security police. In the Nazi era, it referred to the state political and criminal investigation security agencies. It was made up by the ...
'' (SiPo or Security Police). The Orpo consisted mainly of the ''
Schutzpolizei The ''Schutzpolizei'' (), or ''Schupo'' () for short, is a uniform-wearing branch of the ''Landespolizei'', the state (''Land'') level police of the states of Germany. ''Schutzpolizei'' literally means security or protection police, but it is b ...
'' (urban police), the '' Gendarmerie'' (rural police) and the '' Gemeindepolizei'' (municipal police). The SiPo was composed of the Kripo and the Gestapo. Heydrich became Chief of the SiPo and continued as Chief of the SD. Continued escalation of antisemitic policies in the spring of 1937 from the SD's Department of Jewish Affairs (german: Abteilung II/112: Juden) – staffed by members like
Adolf Eichmann Otto Adolf Eichmann ( ,"Eichmann"
'' Herbert Hagen, and
Theodor Dannecker Theodor Denecke (also spelled Dannecker) (27 March 1913 – 10 December 1945) was a German SS-captain (), a key aide to Adolf Eichmann in the deportation of Jews during World War II. A trained lawyer Denecke first served at the Reich Security ...
– led to the eventual removal (''Entfernung'') of Jews from Germany; regardless of concerns about where they were headed. Adolf Eichmann's original task (in his capacity as deputy for the Jewish Affairs department within the SD) was at first to remove any semblance of "Jewish influence from all spheres of public life", which included the encouragement of wholesale Jewish emigration. Official bureaucratization increased apace with numerous specialized offices formed, aiding towards the overall persecution of the Jews. Because the Gestapo and the SD had parallel duties, Heydrich tried to reduce any confusion or related territorial disputes through a decree on 1 July 1937, clearly defining the SD's areas of responsibility as those dealing with "learning (''Wissenschaft''), art, party and state, constitution and administration, foreign lands, Freemasonry and associations" whereas the "Gestapo's jurisdiction was Marxism, treason, and emigrants". Additionally, the SD was responsible for matters related to "churches and sects, pacifism, the Jews, right-wing movements", as well as "the economy, and the Press", but the SD was instructed to "avoid all matters which touched the 'state police executive powers' (''staatspolizeiliche Vollzugsmaßnahmen'') since these belonged to the Gestapo, as did all individual cases." In 1938, the SD was made the intelligence organization for the State as well as for the Nazi Party, supporting the Gestapo and working with the General and Interior Administration. As such, the SD came into immediate, fierce competition with German military intelligence, the ''Abwehr,'' which was headed by Admiral Canaris. The competition stemmed from Heydrich and Himmler's intention to absorb the ''Abwehr'' and Admiral Canaris' view of the SD as an amateur upstart. Canaris refused to give up the autonomy that his military intelligence organ possessed. Additional problems also existed, like the racial exemption for members of the ''Abwehr'' from the Nazi Aryan-screening process, and then there was competition for resources which occurred throughout Nazi Germany's existence. On 27 September 1939, the SiPo became a part of the Reich Security Main Office (RSHA) under Heydrich: * SD-Inland became ''Amt'' (department) III (internal intelligence – within Germany) under
Otto Ohlendorf Otto Ohlendorf (; 4 February 1907 – 7 June 1951) was a German SS functionary and Holocaust perpetrator during the Nazi era. An economist by education, he was head of the (SD) Inland, responsible for intelligence and security within Ger ...
* the Gestapo became ''Amt'' IV under Heinrich Müller * the Kripo became ''Amt'' V under Arthur Nebe * SD-Ausland became ''Amt'' VI (foreign intelligence – outside Germany) under Walter Schellenberg From February 1944 forward, the sections of the ''Abwehr'' were incorporated into ''Amt'' VI.

The SD's relationship with the ''Einsatzgruppen''

The SD was the overarching agency under which the ''Einsatzgruppen der Sicherheitspolizei und des SD'', also known as the ''
Einsatzgruppen (, ; also ' task forces') were (SS) paramilitary death squads of Nazi Germany that were responsible for mass murder, primarily by shooting, during World War II (1939–1945) in German-occupied Europe. The had an integral role in the imp ...
'', was subordinated; this was one of the principal reasons for the later war-crimes indictment against the organization by the Allies. The ''Einsatzgruppen's'' part in the Holocaust has been well documented. Its mobile killing units were active in the implementation of the Final Solution (the plan for genocide) in the territories overrun by the Nazi war machine. This SD subsidiary worked closely with the Wehrmacht in persecuting Jews, communists, partisans, and other groups, as well. Starting with the invasion of Poland throughout the campaign in the East, the ''Einsatzgruppen'' ruthlessly killed anyone suspected of being an opponent of the regime, either real or imagined. The men of the ''Einsatzgruppen'' were recruited from the SD, Gestapo, Kripo, Orpo, and Waffen-SS. On 31 July 1941, Göring gave written authorisation to SD Chief Heydrich to ensure a government-wide cooperative effort in the implementation of the so-called Final Solution to the Jewish question in territories under German control. An SD headquarter's memorandum indicated that the SD was tasked to accompany military invasions and assist in pacification efforts. The memo explicitly stated:
The SD will, where possible, follow up immediately behind the troops as they move in and, as in the Reich, will assume responsibility for the security of political life. Within the Reich, security measures are the responsibility of the Gestapo with SD cooperation. In occupied territory, measures will be under the direction of a senior SD commander; Gestapo officials will be allotted to individual ''Einsatzstäbe''. It will be necessary to make available for special deployment a unit of ''Verfügungstruppe'' or ''Totenkopf'' eath Headformations.
Correspondingly, SD affiliated units, including the ''Einsatzgruppen'' followed German troops into Austria, the Sudetenland, Bohemia, Moravia, Poland, Lithuania, as well as Russia. Since their task included cooperating with military leadership and vice versa, suppression of opposition in the occupied territories was a joint venture. There were territorial disputes and disagreement about how some of these policies were to be implemented. Nonetheless, by June 1941, the SS and the SD task forces were systematically shooting Jewish men of military age, which soon turned to "gunning down" old people, women, and children in the occupied areas. On 20 January 1942, Heydrich chaired a meeting, now called the Wannsee Conference, to discuss the implementation of the plan. Facilities such as Chelmno, Majdanek, Sobibor, Treblinka, and Auschwitz have their origins in the planning actions undertaken by Heydrich. Heydrich remained chief of the Security Police (SiPo) and the SD (through the RSHA) until his assassination in 1942, after which Ernst Kaltenbrunner was named chief by Himmler on 30 January 1943, and remained there until the end of the war. The SD was declared a criminal organization after the war and its members were tried as war criminals at Nuremberg. Whatever their original purpose, the SD and SS were ultimately created to identify and eradicate internal enemies of the State, as well as to pacify, subjugate, and exploit conquered territories and peoples.


The SS Security Service, known as the SS ''SD-Amt'', became the official security organization of the Nazi Party in 1934. Consisting at first of paid agents and a few hundred unpaid informants scattered across Germany, the SD was quickly professionalized under Heydrich, who commissioned National Socialist academics and lawyers to ensure that the SS and its Security Service in particular, operated "within the framework of National Socialist ideology." Heydrich was given the power to select men for the SS Security Service from among any SS subdivisions since Himmler considered the organization of the SD as important. In September 1939, the SD was divided into two departments, the interior department (''Inland-SD'') and the foreign department (''Ausland-SD''), and placed under the authority of the Reich Security Main Office (RSHA).


The Interior Security Service (''Inland-SD''), responsible for intelligence and security within Germany, was known earlier as Department II and later, when placed under the Reich Security Main Office, as its Department III. It was originally headed by Hermann Behrends and from September 1939 by Otto Ohlendorf. It was within this organization that
Adolf Eichmann Otto Adolf Eichmann ( ,"Eichmann"
'' Final Solution to the Jewish Question. Department III was divided into the following sections: * Section A (Law and Legal Structures) * Section B (Race and Ethnic Matters) * Section C (Cultural and Religious Matters) * Section D (Industry and Commerce) * Section E (High Society)


The Foreign Security Service (''Ausland-SD''), responsible for intelligence activities beyond the boundaries of Germany, was known earlier as Department III and later, after September 1939, as Department VI of the Reich Security Main Office. It was nominally commanded by Heydrich, but run by his chief of staff Heinz Jost. In March 1942 Jost was fired and replaced by Walter Schellenberg, a deputy of Heydrich. After the 20 July plot in 1944, Department VI took over the functions of the Military Intelligence Service (''
Abwehr The ''Abwehr'' ( German for ''resistance'' or ''defence'', but the word usually means ''counterintelligence'' in a military context; ) was the German military-intelligence service for the '' Reichswehr'' and the ''Wehrmacht'' from 1920 to 1944. ...
''). Department VI was divided into the following sections: * Section A (Organization and Administration) * Section B (Espionage in the West) * Section C (Espionage in the Soviet Union and Japan) * Section D (Espionage in the American sphere) * Section E (Espionage in Eastern Europe) * Section F (Technical Matters)

Security forces

The SD and the SiPo were the main sources of officers for the security forces in occupied territories. SD-SiPo led battalions were typically placed under the command of the SS and Police Leaders, reporting directly to the RSHA in Berlin. The SD also maintained a presence at all concentration camps and supplied personnel, on an as-needed basis, to such special action troops as the ''
Einsatzgruppen (, ; also ' task forces') were (SS) paramilitary death squads of Nazi Germany that were responsible for mass murder, primarily by shooting, during World War II (1939–1945) in German-occupied Europe. The had an integral role in the imp ...
''. In fact, all members of the ''Einsatzgruppen'' wore the SD sleeve diamond on their uniforms. The SD-SiPo was the primary agency, in conjunction with the '' Ordnungspolizei'', assigned to maintain order and security in the Nazi ghettos established by the Germans throughout occupied Eastern Europe. On 7 December 1941, the same day that the American naval station at Pearl Harbor was bombed by the Japanese, the first extermination camp was opened at Chelmno near Lodz by Ernst Damzog, the SD and SiPo commander in occupied Poznań (Posen). Damzog had personally selected the staff for the killing centre and later supervised the daily operation of the camp, which was under the command of Herbert Lange. Over a span of approximately 15 months, 150,000 people were killed there.


According to the book ''Piercing the Reich'', the SD was infiltrated in 1944 by a former Russian national who was working for the Americans. The agent's parents had fled the Russian Revolution, and he had been raised in Berlin, and then moved to Paris. He was recruited by Albert Jolis of the Office of Strategic Services (OSS) Seventh Army detachment. The mission was codenamed RUPPERT. How extensive the SD's knowledge was about the early plots to kill Hitler by key members of the military remains a contested subject and a veritable unknown. According to British historian John Wheeler-Bennett, "in view of the wholesale destruction of Gestapo archives it is improbable that this knowledge will ever be forthcoming. That the authorities were aware of serious 'defeatism' is certain, but it is doubtful whether they suspected anyone of outright treason."


Given the nature of the intelligence operations assigned to the SD, there were clear delineations between what constituted a full member (''Mitglied'') of the SD and those who were considered "associates" (''Mitarbeiter'') with a further subset for clerical support personnel (typists, file clerks, etc.) who were connoted as V-persons (''Vertrauensleute''). All SD personnel, whether simply associates or full members were required to swear an oath of secrecy, had to meet all the requirements for SS membership, were assigned SD code numbers (''Chiffre Nummer'') and if they were "above the level of V-person" they had to carry "an SD identification card." The vast majority of early SD members were relatively young, but the officers were typically older by comparison; nevertheless, the average age of an SD member was approximately 2 years older than the average Nazi Party member. Much like the Nazi revolution in general, membership in the SS and the SD appealed more to the impressionable youth. Most SD members were Protestant by faith, had served in the military, and generally had a significant amount of education, representing "an educated elite" in the general sense – with about 14 percent of them earning doctorate degrees. Heydrich viewed the SD as spiritual-elite leaders within the SS and the "cream of the cream of the NSDAP." According to historian George C. Browder, "SD men represented no pathological or psychically susceptible group. Few were wild or extreme Nazi fanatics. In those respects they were 'ordinary men'. Yet in most other respects, they were an extraordinary mix of men, drawn together by a unique mix of missions." Along with members of the Gestapo, SD personnel were "regarded with a mixture of fear and foreboding," and people wanted as little to do with them as possible. Belonging to the security apparatus of the Third Reich obviously had its advantages but it was also fraught with occupationally related social disadvantages as well, and if post-war descriptions of the SD by historians are any indication, membership therein implied being a part of a "ubiquitous secret society" which was "sinister" and a "messenger of terror" not just for the German population, but within the "ranks of the Nazi Party itself."

Uniforms and insignia

The SD used SS-ranks. When in uniform they wore the grey
Waffen-SS The (, "Armed SS") was the combat branch of the Nazi Party's '' Schutzstaffel'' (SS) organisation. Its formations included men from Nazi Germany, along with volunteers and conscripts from both occupied and unoccupied lands. The grew from ...
uniform with army and '' Ordnungspolizei'' rank insignia on the shoulder straps, and SS rank insignia on the left collar patch. The right collar patch was black without the runes. The branch color of the SD was green. The SD sleeve diamond (SD ''Raute'') insignia was worn on the lower left sleeve. File:SDInsigna.jpg, SD diamond. Here with white piping, as used by members of the Gestapo when in uniform (if members of the SS). File:Bundesarchiv Bild 101I-380-0069-37, Polen, Verhaftung von Juden, SD-Männer.jpg, SD men in Poland 1939. The SD men are wearing army shoulder straps, akin to the
Waffen-SS The (, "Armed SS") was the combat branch of the Nazi Party's '' Schutzstaffel'' (SS) organisation. Its formations included men from Nazi Germany, along with volunteers and conscripts from both occupied and unoccupied lands. The grew from ...
. File:SDJacke.jpg, M43 field tunic, with SS rank insignia and SD diamond on lower part of sleeve

See also

Bandenbekämpfung In German military history, ''Bandenbekämpfung'' ( German; ), also Nazi security warfare (during World War II), refers to the concept and military doctrine of countering resistance or insurrection in the rear area during wartime through ...
Glossary of Nazi Germany This is a list of words, terms, concepts and slogans of Nazi Germany used in the historiography covering the Nazi regime. Some words were coined by Adolf Hitler and other Nazi Party members. Other words and concepts were borrowed and appropriat ...
* List of SS personnel * Operation Bolivar


Informational notes



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External links

* {{Authority control Nazi German intelligence agencies German words and phrases Nazi Party organizations Nazi SS Reich Security Main Office Reinhard Heydrich