Question: Ernst John von Freyend was adjutant to which Chief of the Armed Forces High Command during WWII?

full_context: Document 1: Gerd von Rundstedt: Karl Rudolf Gerd von Rundstedt (12 December 1875 – 24 February 1953) was a Field Marshal in the Wehrmacht of Nazi Germany during World War II.
Document 2: Wilhelm Keitel: Wilhelm Keitel (22 September 1882 – 16 October 1946) was a German field marshal who served as Chief of the Armed Forces High Command ("Oberkommando der Wehrmacht" or OKW) in Nazi Germany during World War II. According to David Stahel, Keitel was "well known and [...] reviled as Hitler's dependable mouthpiece and habitual yes-man" among his military colleagues.
Document 3: Alfred Jodl: Alfred Josef Ferdinand Jodl (   ; 10 May 1890 – 16 October 1946) was a German general and war criminal during World War II, who served as the Chief of the Operations Staff of the Armed Forces High Command (Oberkommando der Wehrmacht).
Document 4: The Plot to Kill Hitler: The Plot to Kill Hitler is a 1990 television film based on the July 20 plot by German High Command to kill Adolf Hitler in 1944. Brad Davis stars as Colonel Claus Schenk Graf von Stauffenberg, who plants a bomb in the conference room of the Führer's headquarters in East Prussia.
Document 5: Oberkommando des Heeres: The Oberkommando des Heeres (OKH) was the Supreme High Command of the German Army. It was founded in 1935 as a part of Adolf Hitler's re-militarisation of the Third Reich. Its commander held the title "Oberbefehlshaber des Heeres", Supreme High Commander of the Army. From 1938 OKH was together with OKL "Oberkommando der Luftwaffe", Supreme High Command of the Air Force and OKM "Oberkommando der Marine", Supreme High Command of the Navy, formally subordinated to the OKW "Oberkommando der Wehrmacht", Supreme High Command of all Armed Forces (with exception of the Waffen-SS). During the war OKH had the responsibility of strategic planning of Armies and Army Groups, while the General Staff of the OKH managed operational matters. Each German Army also had an "Armeeoberkommando", Army Command, or AOK. Until the German defeat at Moscow in December 1941, OKH and its staff was "de facto" the most important unit within the German war planning. OKW ("Oberkommando der Wehrmacht", Supreme High Command of the Armed Forces) then took over this function for theaters other than the Russian front.
Document 6: Military career of Adolf Hitler: The military career of Adolf Hitler can be divided into two distinct portions of Adolf Hitler's life. Mainly, the period during World War I when Hitler served as a "Gefreiter" (lance corporal) in the Bavarian Army, and the era of World War II when Hitler served as the Supreme Commander-in-Chief of the Wehrmacht (German Armed Forces) through his position as Führer of Nazi Germany.
Document 7: Karl Dönitz: Karl Dönitz (sometimes spelt Doenitz) (] ; 16 September 1891 – 24 December 1980) was a German admiral who played a major role in the naval history of World War II. Dönitz briefly succeeded Adolf Hitler as the head of state of Germany.
Document 8: Karl von Eberstein: Friedrich Karl Freiherr von Eberstein (14 January 1894 – 10 February 1979) was a member of the German nobility, early member of the Nazi Party, the SA, and the SS (introducing Reinhard Heydrich to Heinrich Himmler in July 1931). Further, he rose to become a Reichstag delegate, an HSSPF and SS-Oberabschnitt Führer (chief of the Munich Police in World War II), and was a witness at the Nuremberg Trials.
Document 9: Hans-Georg von Friedeburg: Hans-Georg von Friedeburg (15 July 1895 – 23 May 1945) was a German admiral, the deputy commander of the U-boat Forces of Nazi Germany and the last Commander-in-Chief of the Kriegsmarine. He was the only representative of the armed forces to be present at the signing of the German instruments of surrender both in Reims on 7 May and in Berlin on 8 May 1945. "Generaladmiral" von Friedeburg committed suicide shortly afterwards, upon the dissolution of the Flensburg Government.
Document 10: Oster Conspiracy: The Oster Conspiracy of 1938 was a proposed plan to overthrow German "Führer" Adolf Hitler and the Nazi regime if Germany went to war with Czechoslovakia over the Sudetenland. It was led by Generalmajor (major general) Hans Oster, deputy head of the "Abwehr" and other high-ranking conservatives within the Wehrmacht who opposed the regime for its behaviour that was threatening to bring Germany into a war that they believed it was not ready to fight. They planned to overthrow Hitler and the Nazi regime through a planned storming of the Reich Chancellery by forces loyal to the plot to take control of the government, who would either arrest or assassinate Hitler, and restore the exiled Wilhelm II as Emperor.
Document 11: Kurt von Plettenberg: Kurt Freiherr von Plettenberg (31 January 1891 in Bückeburg – 10 March 1945 in Berlin) was a German forester, cavalry officer and a member of the German Resistance (Widerstand). He was involved in the preparations for the 20 July plot, an attempt to assassinate Adolf Hitler, Führer of the Third Reich. Plettenberg belonged to the circle of close friends which included Claus Schenk Graf von Stauffenberg, Johannes Popitz, Ludwig Beck, Ulrich von Hassell, Carl-Hans Graf von Hardenberg and Fabian von Schlabrendorff.
Document 12: Albert Kesselring: Albert Kesselring (30 November 1885 – 16 July 1960) was a German "Luftwaffe Generalfeldmarschall" during World War II. In a military career that spanned both World Wars, Kesselring became one of Nazi Germany's most skilful commanders, and one of the most highly decorated, being one of 27 soldiers awarded the Knight's Cross of the Iron Cross with Oak Leaves, Swords and Diamonds. Nicknamed "Smiling Albert" by the Allies and "Uncle Albert" by his troops, he was one of the most popular generals of World War II with the rank and file.
Document 13: Alfred Jodl: Alfred Josef Ferdinand Jodl (   ; 10 May 1890 – 16 October 1946) was a German general and war criminal during World War II, who served as the Chief of the Operations Staff of the Armed Forces High Command (Oberkommando der Wehrmacht).
Document 14: Erwin Rommel: Erwin Rommel (15 November 1891 – 14 October 1944) was a German general and military theorist. Popularly known as the Desert Fox, he served as field marshal in the Wehrmacht of Nazi Germany during World War II.
Document 15: Ernst John von Freyend: Ernst John von Freyend (25 March 1909– 24 March 1980) was a German Oberkommando der Wehrmacht officer who served during World War II as the adjutant to Field Marshal Wilhelm Keitel. He is notable for unwittingly helping to place the 20 July plot bomb that was intended to kill Adolf Hitler.
ground_truth: Wilhelm Keitel