Question: Taktisches Luftwaffengeschwader 51 was named after which first German WWI flying ace?
Context: Taktisches Luftwaffengeschwader 51 "Immelmann" (Tactical Air Force Wing 51 "Immelmann"), formerly known as Aufklärungsgeschwader 51 (Reconnaissance Wing), is a tactical reconnaissance wing of the German Air Force.  The Wing is named after World War I German flying ace Max Immelmann.  The wing operates 25 Panavia Tornado aircraft in the tactical reconnaissance role and has two reconnaissance ground stations that can be deployed on overseas operations.  The Tornado aircraft are equipped with reconnaissance sensors which are carried in a pod mounted under the fuselage.  Depending on the variant used, the reconnaissance pod with optical and infrared sensors, can reconnoiter targets both day and night. Otto Kissenberth (26 February 1893 – 2 August 1919) was a German flying ace of World War I credited with 20 aerial victories.  He was a prewar mechanical engineer who joined the German air service in 1914.  After being trained and after serving as a reconnaissance pilot, he became one of the first German fighter pilots, flying with "Kampfeinsitzerkommando" (Combat Single-Seater Command) KEK Einsisheim.  He scored six victories with this unit as it morphed into a fighter squadron, "Jagdstaffel 16".  His success brought him command of "Jagdstaffel 23" on 4 August 1917.  He would run his victory tally to 20, downing his final victim using a captured British Sopwith Camel on 20 May 1918.  Nine days later, a crash while flying the Camel ended Kissenberth's combat career.  His injuries were severe enough he was not returned to combat, instead being assigned to command Schleissheim's flying school.  Although Otto Kissenberth survived the war, he died soon after in a mountaineering accident on 2 August 1919. Büchel Air Base is a military air base of the Luftwaffe in Büchel (Germany), near the city of Cochem and at about 45 miles from Spangdahlem Air Base.  It is home to the Taktisches Luftwaffengeschwader 33 (Tactical Air Force Wing 33; abbreviated as: TaktLwG 33) (formerly Jagdbombergeschwader 33 or Fighter Bomber Wing 33) of the German Air Force ("Luftwaffe") and the 702 Munitions Support Squadron (702 MUNSS) of the United States Air Force (USAF).  It was formerly the home of the 7501 MUNSS. "'Wittmundhafen Air Base"' (Fligerhorst Wittmundhafen in German) is a military air base in Germany.  It is home to the Tactical Wing 71 (JG 71 for short, Fighter Wing 71 in English) of the German Air Force ("Luftwaffe").  Since May 1974 the F-4F Phantom II was operated from the base.  German F-4F Phantoms at the base were retired on 29 June 2013.  During 2013 JG 71 transitioned to the new 20 plus Eurofighter Typhoon. JG-71 was re-named TLwG-71 (Taktisches Luftwaffengeschwader or Tactical Air Wing) at some point prior to the end of 2014.  Prior to May 1974,JG-71 operated the F-104G Starfighter.  Up to the mid/late-1980s JG-71 (as well as each Luftwaffe wing) operated a handful (usually 4) of DO-28D Skyservants. Taktisches Luftwaffengeschwader 31 "Boelcke" (Tactical Air Force Wing 31; abbreviated as "TaktLwG 31 "B""), formerly known as Jagdbombergeschwader 31 (Fighter-Bomber Wing 31; abbreviated as: "JaBoG 31"), is a fighter-bomber wing of the German Air Force ("Luftwaffe").  The wing is based in west Germany at Nörvenich Air Base.  Its role are Air Interdiction, Offensive Counter Air and Close Air Support.  The wing flies the Eurofighter Typhoon. Taktisches Luftwaffengeschwader 33 (Tactical Air Force Wing 33; abbreviated as: "TaktLwG 33"), formerly known as Jagdbombergeschwader 33 (Fighter-Bomber Wing 33; abbreviated as: "JaBoG 33") is a fighter-bomber wing of the German Air Force ("Luftwaffe").  The wing is based in west Germany at Büchel Air Base.  Its role are Air Interdiction, Offensive Counter Air and Close Air Support.  The wing flies the Panavia Tornado IDS. Max Immelmann (21 September 1890 – 18 June 1916) "PLM" was the first German World War I flying ace.  He was a pioneer in fighter aviation and is often mistakenly credited with the first aerial victory using a synchronized gun.  He was the first aviator to win the "Pour le Mérite", and was awarded it at the same time as Oswald Boelcke.  His name has become attached to a common flying tactic, the Immelmann turn, and remains a byword in aviation.  He is credited with 15 aerial victories. Taktisches Luftwaffengeschwader (Tactical Air Force Wing) 73 "Steinhoff", formerly known as Jagdgeschwader 73 (Fighter Wing 73), is a fighter wing of the German Air Force.  The wing is based in north-eastern Germany at Rostock-Laage Airport near Rostock.  Its role includes general air defence as well as training for the Eurofighter Typhoon. Taktisches Luftwaffengeschwader 71 &quot;Richthofen&quot; Taktisches Luftwaffengeschwader 74 (74th Tactical Air Force Wing), formerly known as Jagdgeschwader 74 (JG 74) (74th Fighter Wing), is an aviation unit of the German Air Force, based on Neuburg Air Base in Bavaria since 1961.  On 1 October 2013, the unit was renamed in the course of adaptations to the new structure of the German Air Force.
Answer: Max Immelmann