Question: A former officer of what was a Lieutenant General is notable for being present in the conference room when the 20 July plot bomb exploded in 1944 along with 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 ?

Context paragraphs:
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).

Royal Gendarmerie of Cambodia: The Royal Gendarmerie of Cambodia (Khmer: កងរាជអាវុធហត្ថ ), or "Military Police", is a branch of the Royal Cambodian Armed Forces and it is responsible for the maintenance of public order and internal security in Cambodia.  The paramilitary unit has a strength of 10,000 soldiers deployed in all provinces.  Its headquarters is located in Phnom Penh, with the unit's chain of command through the Royal Cambodian Armed Forces High Command.  The Gendarmerie is under the direct supervision of a commander with an equivalent rank to Lieutenant-General.  The High Command is responsible for monitoring all Gendarmerie units as well as general training. The current commander of Gendarmerie is lieutenant-General Sao Sokha, a former bodyguard and personal advisor to Cambodian Prime minister Hun Sen.

OB West: The German Army Command in the West ("Oberbefehlshaber West" (German: initials OB West) was the overall command of the Westheer, the German Armed Forces on the Western Front during World War II.  It was directly subordinate to German Armed Forces High Command.  The area under the command of the OB West varied as the war progressed.  At its farthest extent it reached the French Atlantic coast.  By the end of World War II in Europe it was reduced to commanding troops in Bavaria.

Herbert Büchs: Herbert Büchs (20 November 1913 – 19 May 1996) was a Lieutenant General of the German Air Force and a former Luftwaffe staff officer in Nazi Germany's Oberkommando der Wehrmacht (OKW) during World War II.  As second adjutant to General Alfred Jodl with the rank of Major he is notable for being present in the conference room when the 20 July plot bomb exploded in 1944.

Ibrahim El-Orabi: Ibrahim Abdel Ghafour El Orabi (Arabic: إبراهيم عبد الغفور العرابي‎ ‎ , ] ) (born 20 May 1931) was an Egyptian Army Lieutenant General and the 13th and former Chief of Staff of the Egyptian Armed Forces.  He was a member of the Free Officers Movement as defined by the Egyptian revolution of 1952, which led to King Farouk abdicated to his son King Ahmed Fouad II, until announced the establishment of the Republic in 1953.  He began his military career at the end of the forties and witnessed all Arab-Israeli wars and all the political volatility that passed by Egypt since the 1948 Arab–Israeli War to the Yom Kippur War where he was one of its heroes.  He previously served as the 7th Chief of Operations of the Armed Forces.  Prior to that, he served as Commander of the Second Field Army, as Commander of the 21st Armored Division, as Commander of the Arab Forces in Iraq, and as Commander of the Armored Corps in Yemen war.  As the Chief of Staff of the Egyptian Armed Forces, Orabi was formerly the second highest-ranking military officer in all of the Egyptian Armed Forces.  Orabi assumed his former assignment on 16 July 1983.  Best known for severe discipline and rigor.

Arnold Quainoo: Lieutenant General Arnold Quainoo is a retired Ghanaian military officer and served as the Chief of Defence Staff of the Ghana Armed Forces from August 1983 to September 1989.  He took over from Flight Lieutenant J. J. Rawlings and handed over to Lieutenant General Winston Mensa-Wood.  He was also the first commander of the Economic Community of West African States Monitoring Group (ECOMOG) which intervened in Liberia to help end the civil war.  He also served twice as Army Commander, first in 1979 following the coup-d'état by the Armed Forces Revolutionary Council which overthrew the Supreme Military Council.  He was replaced when the Limann government was elected.  He was however re-appointed as Chief of Army Staff following the coup by the Provisional National Defence Council and later as General Officer Commanding the Ghana Armed Forces.

Heinz Assmann: Captain Heinz Assmann (15 August 1904 in Stendal – 15 October 1954 in Hamburg) was a German naval officer who was a Kriegsmarine staff officer in Nazi Germany's Oberkommando der Wehrmacht (OKW) during World War II.  He is notable for being present in the conference room when the 20 July plot bomb exploded in 1944 and after the war for providing his recollections of the many briefings for Adolf Hitler that he attended.

Heinz Brandt: Generalmajor Heinz Brandt (11 March 1907 – 21 July 1944) was a German officer during World War II who served as an aide to General Adolf Heusinger, the head of the operations unit of the General Staff.  He may have inadvertently saved Adolf Hitler's life, at the cost of his own, by moving the 20 July plot bomb planted by Claus von Stauffenberg.

Pakistan Armed Forces Eastern Command: The Eastern Military High Command of the Pakistan Armed Forces was a field-level military command headed by an appointed senior 3-star officer, who was designated the Unified Commander of the Eastern Military High Command.  After the partition of India by Great Britain, the Islamic Republic of Pakistan was divided into two territories separated by 1000 mi (prior to the independence of Bangladesh in 1971).  Most of the assets of the Pakistan armed forces were stationed in West Pakistan; the role of the Pakistan armed forces in East Pakistan was to hold out until Pakistan was defeated by India in the west (in case of war).  The Pakistan armed forces created the Eastern Military High Command, with one unified commander of the Pakistan armed forces responsible for the command.  The armed forces (particularly the Pakistan Army), had drawn up a plan to defend Dhaka by concentrating all their forces along the Dhaka Bowl (the area surrounded by the rivers Jamuna, Padma and Meghna).

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.

Supporting paragraphs: Herbert Büchs Alfred Jodl
Answer: German Air Force