Question: What flying ace was shot down by the "Red Barron" during WWII?

full_context: Document 1: Erich Rudorffer: Erich Rudorffer (1 November 1917 – 8 April 2016) was a German "Luftwaffe" fighter ace who was one of a handful who served with the "Luftwaffe" through the whole of World War II. He was the 7th most successful fighter pilot in the history of air warfare, with 222 victories claimed. Rudorffer fought in all the major German theaters of war, including the European and Mediterranean Theater of Operations and the Eastern Front. During the war he flew more than 1000 combat missions, engaging in aerial combat over 300 times. Rudorffer was shot down by flak and enemy fighters 16 times and had to take to his parachute nine times. He distinguished himself by shooting down 13 enemy planes in 17 minutes. His 222 aerial victories included 58 heavily armoured Il-2 Sturmovik ground attack aircraft.
Document 2: Lanoe Hawker: Lanoe George Hawker VC, DSO (30 December 1890 – 23 November 1916) was a British First World War flying ace. Having seven credited victories, he was the third pilot to receive the Victoria Cross, the highest decoration for gallantry awarded to British and Commonwealth servicemen. He was killed in a dogfight with the famous German flying ace Manfred von Richthofen ("The Red Baron"), who described him as "the British Boelcke".
Document 3: Sir Arthur Harris, 1st Baronet: Marshal of the Royal Air Force Sir Arthur Travers Harris, 1st Baronet, {'1': ", '2': ", '3': ", '4': "} (13 April 1892 – 5 April 1984), commonly known as "Bomber" Harris by the press and often within the RAF as "Butcher" Harris, was Air Officer Commanding-in-Chief (AOC-in-C) RAF Bomber Command during the height of the Anglo-American strategic bombing campaign against Nazi Germany in the Second World War. In 1942, the British Cabinet agreed to the "area bombing" of German cities. Harris was tasked with implementing Churchill's policy and supported the development of tactics and technology to perform the task more effectively. Harris assisted British Chief of the Air Staff Marshal of the Royal Air Force Charles Portal in carrying out the United Kingdom's most devastating attacks against the German infrastructure and population, including the Bombing of Dresden.
Document 4: Cedric Popkin: Cedric Bassett Popkin (Born 20 June 1890, died 26 January 1968) is considered the person most likely to have killed German ace Manfred von Richthofen — also known as the "Red Baron" — on 21 April 1918. Popkin was an anti-aircraft (AA) machine gunner with the First Australian Imperial Force (AIF), during World War I.
Document 5: Lothar von Richthofen: Lothar Freiherr von Richthofen (born Lothar Siegfried Freiherr von Richthofen; 27 September 1894 – 4 July 1922) was a German First World War fighter ace credited with 40 victories. He was a younger brother of top-scoring ace Manfred von Richthofen (the "Red Baron") and a distant cousin of Luftwaffe Field Marshal Wolfram von Richthofen.
Document 6: Robert Saundby: Air Marshal Sir Robert Henry Magnus Spencer Saundby {'1': ", '2': ", '3': ", '4': "} (26 April 1896 – 25 September 1971) was an RAF officer whose career spanned both World War I and World War II. He distinguished himself gaining five victories during World War I, and was present during the air battle when Lanoe Hawker was shot down and killed by Manfred von Richthofen, the "Red Baron". He is chiefly remembered for his role as Deputy AOC in C Bomber Command under Sir Arthur 'Bomber' Harris during the latter part of World War II.
Document 7: Erich Hartmann: Erich Alfred Hartmann (19 April 1922 – 20 September 1993), nicknamed "Bubi" ("The Kid") by his German comrades and "The Black Devil" by his Soviet adversaries, was a German fighter pilot during World War II and the most successful fighter ace in the history of aerial warfare. He flew 1,404 combat missions and participated in aerial combat on 825 separate occasions. He claimed, and was credited with, shooting down 352 Allied aircraft—345 Soviet and 7 American—while serving with the "Luftwaffe". During the course of his career, Hartmann was forced to crash-land his fighter 14 times due to damage received from parts of enemy aircraft he had just shot down or mechanical failure. Hartmann was never shot down or forced to land due to enemy fire.
Document 8: Manfred von Richthofen: Manfred Albrecht Freiherr von Richthofen (2 May 1892 – 21 April 1918), also known as the "Red Baron", was a fighter pilot with the German Air Force during World War I. He is considered the ace-of-aces of the war, being officially credited with 80 air combat victories.
Document 9: Hugh Dowding: Air Chief Marshal Hugh Caswall Tremenheere Dowding, 1st Baron Dowding, (24 April 1882 – 15 February 1970) was an officer in the Royal Air Force. He served as a fighter pilot and then as commanding officer of No. 16 Squadron during the First World War. During the inter-war years he became Air Officer Commanding Fighting Area, Air Defence of Great Britain and then joined the Air Council as Air Member for Supply and Research. He was Air Officer Commanding RAF Fighter Command during the Battle of Britain, and is generally credited with playing a crucial role in Britain's defence, and hence, the defeat of Adolf Hitler's plan to invade Britain. He was unwillingly replaced in command in November 1940 by Big Wing advocate Sholto Douglas.
Document 10: Snowy Evans: Willy John "Snowy" Evans (  1891 –1925) was a Lewis machine gunner in the Royal Australian Artillery (RAA) during World War I. Unsolved History, produced by Discovery Channel credited him with firing the shot that killed Manfred von Richthofen ("The Red Baron"), near Vaux-sur-Somme, France on 21 April 1918. However, most sources attribute the feat to Sergeant Cedric Popkin of the 24th Machine Gun Company. Other sources have suggested that Gunner Robert Buie, also of the 53rd Battery, fired the fatal shot, but there is now little support for this theory.
Document 11: Hans-Joachim Marseille: Hans-Joachim Walter Rudolf Siegfried Marseille (13 December 1919 – 30 September 1942; ] ) was a German fighter pilot during World War II. A flying ace, he is noted for his aerial battles during the North African Campaign. Marseille claimed all but seven of his 158 victories against the British Desert Air Force over North Africa. No other pilot claimed as many Western Allied aircraft as Marseille.
Document 12: Hubert Raymond Allen: Hubert Raymond Allen, (19 March 1919 – 31 May 1987) was a Royal Air Force (RAF) officer and commentator on defence matters. He fought during the Battle of Britain and was an flying ace of the Second World War, scoring 8 victories. Following his retirement from the RAF as a wing commander in 1965, Allen wrote several controversial books and articles on air power. He criticised RAF Air Staff policies before and during the Second World War. In contrast to the conventional narrative account, he maintained that during the Battle of Britain naval rather than air power was the crucial factor. His opinions clashed with mainstream opinion of the RAF's role, and with the views of many air historians, but his viewpoint received some support and significant attention.
Document 13: Max Immelmann: 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.
Document 14: Douglas Bader: Group Captain Sir Douglas Robert Steuart Bader, ( ; 21 February 1910 – 5 September 1982) was a Royal Air Force flying ace during the Second World War. He was credited with 22 aerial victories, four shared victories, six probables, one shared probable and 11 enemy aircraft damaged.
Document 15: List of victories of Werner Voss: Leutnant Werner Voss (13 April 1897 – 23 September 1917) was a friendly rival of World War I's leading ace, Manfred von Richthofen. Richthofen himself considered Voss as the only pilot with the potential to exceed Richthofen's aerial victory score. When Voss was killed in action, he had scored 44 victories. As can be seen by the list below, his victory roll is well documented.
ground_truth: Lanoe Hawker