Question: Which position did this prominent official in Nazi Germany serve under Adolf Hitler to gain power within the Third Reich who accepted the establishment of the Freikorps?

Context paragraphs:
Freikorps Sauerland: The Freikorps Sauerland (Free Corps of Sauerland), was a paramilitary association created by Gauleiter Albert Hoffmann in September 1944.  In October, the Freikorps was officially established, and accepted by the Party Chancellery of Nazi Germany, where Martin Bormann, head of the Volkssturm associated the Freikorps to his services, as they often completed tasks, missions, etc. with them in the final months of the war.  Hoffmann saw the Freikorps Sauerland as an "elite unit" in his Gau Westfalen-Süd campaigns against Allied Forces (notably, this is also where Albert Hoffmann had served as the Gauleiter before war had broken out).

The Rise and Fall of the Third Reich: The Rise and Fall of the Third Reich: A History of Nazi Germany is a book by William L. Shirer chronicling the rise and fall of Nazi Germany from the birth of Adolf Hitler in 1889 to the end of World War II in 1945.  It was first published in 1960, by Simon & Schuster in the United States, where it won a National Book Award.

Mass suicides in 1945 Nazi Germany: During the final weeks of the Third Reich and the war in Europe, many civilians, government officials and military personnel throughout Nazi Germany committed suicide.  Aside from high-ranking Nazi officials like Adolf Hitler, Joseph Goebbels, Heinrich Himmler, Philipp Bouhler and Martin Bormann, many others chose " Selbstmord" (German: "Self-murder" ) rather than accept the defeat of Germany.  Studies have shown that the suicides were influenced through Nazi propaganda (reaction to the suicide of Adolf Hitler), the tenets of the Nazi Party, and the anticipated reprisals following the Allied occupation of Nazi Germany.  For example in April 1945, at least 1,000 people killed themselves and others within 72 hours as the Red Army neared the East German town of Demmin.

Martin Bormann: Martin Bormann (17 June 1900 – 2 May 1945) was a prominent official in Nazi Germany as head of the Nazi Party Chancellery.  He gained immense power within the Third Reich by using his position as Adolf Hitler's private secretary to control the flow of information and access to Hitler.

Heinrich Himmler: Heinrich Luitpold Himmler (] ; 7 October 1900 – 23 May 1945) was "Reichsführer" of the "Schutzstaffel" (Protection Squadron; SS), and a leading member of the Nazi Party (NSDAP) of Germany.  Nazi leader Adolf Hitler briefly appointed him a military commander and later Commander of the Replacement (Home) Army and General Plenipotentiary for the administration of the entire Third Reich ("Generalbevollmächtigter für die Verwaltung").  Himmler was one of the most powerful men in Nazi Germany and one of the people most directly responsible for the Holocaust.

List of books about Nazi Germany: This is a list of books about Nazi Germany, the state that existed in Germany during the period from 1933 to 1945, when its government was controlled by Adolf Hitler and his National Socialist German Workers' Party (NSDAP; Nazi Party).  It also includes some important works on the development of Nazi imperial ideology, totalitarianism, German society during the era, the formation of anti-Semitic racial policies, the post-war ramifications of Nazism, along with various conceptual interpretations of the Third Reich.

Sudetendeutsches Freikorps: Sudetendeutsches Freikorps (Sudeten German Free Corps, also known as the Freikorps Sudetenland, Freikorps Henlein and Sudetendeutsche Legion) was a paramilitary Nazi organization founded on 17 September 1938 in Germany on direct order of Adolf Hitler.  The organization was composed mainly of ethnic German citizens of Czechoslovakia with pro-Nazi sympathies who were sheltered, trained and equipped by German authorities and who were conducting cross border terrorist operations into Czechoslovak territory from 1938 to 1939.  They played an important part in Hitler's successful effort to occupy Czechoslovakia and annex the region known as Sudetenland into the Third Reich under Nazi Germany.

Reichsautobahn: The Reichsautobahn system was the beginning of the German autobahns under the Third Reich.  There had been previous plans for controlled-access highways in Germany under the Weimar Republic, and two had been built, but long-distance highways had not been successfully built.  After previously opposing plans for a highway network, the Nazis embraced them after coming to power and presented the project as Hitler's own idea.  They were termed "Adolf Hitler's roads" (German: "die Straßen Adolf Hitlers" ) and presented as a major contribution to the reduction of unemployment.  Other reasons for the project included: enabling Germans to explore and appreciate their country, and there was a strong aesthetic element to the execution of the project under the Third Reich; military applications, although to a lesser extent than has often been thought; a permanent monument to the Third Reich, often compared to the pyramids; and general promotion of motoring as a modernization that in itself had military applications.

History of Pomerania (1933–1945): History of Pomerania between 1933 and 1945 covers the period of one decade of the long history of Pomerania, lasting from the Adolf Hitler's rise to power until the end of World War II in Europe.  In 1933, the German Province of Pomerania like all of Germany came under control of the Nazi regime.  During the following years, the Nazis led by Gauleiter Franz Schwede-Coburg manifested their power through the process known as "Gleichschaltung" and repressed their opponents.  Meanwhile, the Pomeranian Voivodeship was part of the Second Polish Republic, led by Józef Piłsudski.  With respect to Polish Pomerania, Nazi diplomacy – as part of their initial attempts to subordinate Poland into Anti-Comintern Pact – aimed at incorporation of the Free City of Danzig into the Third Reich and an extra-territorial transit route through Polish territory, which was rejected by the Polish government, that feared economic blackmail by Nazi Germany, and reduction to puppet status.

Nazi Germany: Nazi Germany is the common English name for the period in German history from 1933 to 1945, when Germany was governed by a dictatorship under the control of Adolf Hitler and the Nazi Party (NSDAP).  Under Hitler's rule, Germany was transformed into a totalitarian state in which the Nazi Party controlled nearly all aspects of life.  The official name of the state was "Deutsches Reich" from 1933 to 1943 and "Großdeutsches Reich" ("Greater German Reich") from 1943 to 1945.  The period is also known under the names the Third Reich (German: "Drittes Reich" ) and the National Socialist Period (German: "Zeit des Nationalsozialismus" , abbreviated as "NS-Zeit").  The Nazi regime came to an end after the Allied Powers defeated Germany in May 1945, ending World War II in Europe.

Supporting paragraphs: Freikorps Sauerland Martin Bormann
Answer: private secretary