Theodor Weissenberger (21 December 1914 – 11 June 1950) was a German Luftwaffe military aviator during World War II and a fighter ace credited with 208 enemy aircraft shot down in 375 combat missions. The majority of his victories were claimed near the Arctic Ocean in the northern sector of the Eastern Front, but he also claimed 33 victories over the Western Front. He claimed eight of these victories over the Western Allies while flying the Messerschmitt Me 262 jet fighter.
Born in Mühlheim am Main in the German Empire, Weissenberger, who had been a glider pilot in his youth, volunteered for service in the Luftwaffe of Nazi Germany in 1936. Following flight training, he was posted to the heavy fighter squadron of Jagdgeschwader 77 (JG 77—77th Fighter Wing) in 1941. He claimed his first aerial victory over Norway on 24 October 1941. After 23 aerial victories as heavy fighter pilot, he received the German Cross in Gold and was then posted to Jagdgeschwader 5 (JG 5—5th Fighter Wing) in September 1942. There he received the Knight's Cross of the Iron Cross on 13 November 1942 after 38 aerial victories.
In June 1943, Weissenberger was appointed Staffelkapitän of 7. Staffel of JG 5. Following his 112th aerial victory, he was awarded the Knight's Cross of the Iron Cross with Oak Leaves on 2 August 1943. He was appointed Staffelkapitän of 6. Staffel in September 1943 and in March 1944 he was given command of II. Gruppe of JG 5 which was operating in Defense of the Reich missions. In June 1944 he took command of I. Gruppe of JG 5 which defended against the Invasion of Normandy. Weissenberger claimed 25 aerial victories in this theater, which included his 200th victory on 25 July 1944.
After conversion training to the Me 262 jet fighter, he was appointed commander of I. Gruppe of Jagdgeschwader 7 "Nowotny" (JG 7—7th Fighter Wing), the first operational jet fighter wing in the world, in November 1944. Promoted to Major (major), he took command of JG 7 "Nowotny" as a Geschwaderkommodore in January 1945, a position he held until the end of hostilities.
He was killed in a car racing accident on 11 June 1950 at the Nürburgring.
Early life and career Weissenberger, the son of a plant nursery owner, was born on 21 December 1914 in Mühlheim am Main in the Grand Duchy of Hesse of the German Empire. He had a brother Otto who also served as a pilot in Luftwaffe. As a glider pilot with the German Air Sports Association (), he made his maiden flight on 16 November 1935. On 20 July 1941 he logged his 645th flight as a glider pilot, in total 196 hours and 46 minutes of powerless flight. Most of these flights were made as an instructor over the Rhön Mountains, Silesia and Bavaria.
He joined the military service of the Luftwaffe with 2./Flieger-Ersatz-Abteilung 14 (2nd Company of Flier Replacement Unit 14) in Detmold on 19 October 1936. There he was promoted to Feldwebel of the Reserves on 1 December 1940.
World War II Weissenberger was posted to a front-line unit on 27 August 1941, almost two years after the start of World War II. His unit, 1.(Z)/Jagdgeschwader 77 (JG 77—77th Fighter Wing) was a Zerstörer (Z—heavy fighter or destroyer) Staffel (squadron) flying the twin-engine, up to three-seat, Messerschmitt Bf 110.For an explanation of Luftwaffe unit designations, see Organization of the Luftwaffe during World War II. The unit was stationed in Norway, operating in the Murmansk area in support of Finnish operations against the Soviet Union during the Continuation War. Germany regarded its operations in the region as part of its overall war efforts on the Eastern Front, and it provided Finland with critical material support and military cooperation. There he flew his first combat mission of the war on 13 September 1941.
War on the Arctic Front Weissenberger claimed his first aerial victory, a Polikarpov I-153 biplane fighter, on 24 October 1941 and was awarded the Iron Cross 2nd Class () on 6 November 1941. He was promoted to Oberfeldwebel of the Reserves on 1 February 1942. During this phase of his military career, he often got into trouble with his superiors regarding his lack of discipline. A few times his comrades had to intervene to save him from punishment. On 24 January 1942, Weissenberger and Oberleutnant Max Franzisket flew on a ground attack mission against the Kirov Railway line. Weissenberger claimed a Polikarpov I-18 shot down at 13:35, roughly northwest of the railway station of Bojaskoje. At 13:40, he claimed a Hawker Hurricane shot down, his third aerial victory.
In February 1942 he mostly flew escort fighter missions for Junkers Ju 87 and Ju 88 bombers attacking the harbors at Ferosero, Polyarnoye, present-day Polyarny, and Murmansk. Weissenberger received the Iron Cross 1st Class () on 17 February 1942. On 25 February he claimed two more Hurricanes shot down at 11:15 and 11:22, his fourth and fifth victories. His Staffel was redesignated as 10.(Z) of Jagdgeschwader 5 (JG 5—5th Fighter Wing) on 16 March 1942 and subordinated to JG 5. In April 1942 he claimed eight victories, three of which were shot down on 15 April during two combat missions west of Murmansk. On 25 April at 07:20 Weissenberger took off at Kirkenes for an emergency intercept mission against 20 Soviet Petlyakov Pe-2 bombers. He shot down two bombers before his aircraft was hit by the defensive fire. The right engine started burning and he was forced to disengage from the enemy. Returning to the German lines, he made a safe belly landing.
Weissenberger became an "ace-in-a-day" for the first time on 10 May 1942 when he shot down five enemy aircraft, aerial victories 14–18, between 16:45 and 16:57 while on a Ju 87 escort mission. These victories were claimed over aircraft of 2 Gvardeyskiy Smeshannyy Aviatsionny Polk (2 GSAP—2nd Soviet Guards Composite Aviation Division), which lost ten Hurricanes destroyed and three damaged. He claimed his 20th victory on 15 May when he shot down a Hurricane west of Murmansk. In June 1942, JG 5 was augmented by another group, VI. Gruppe (4th Group) under the command of Hauptmann Hans Kriegel. This led to a number of Staffel redesignations. Weissenberger's 10.(Z) Staffel was renamed as 13.(Z) Staffel and remained subordinated to JG 5. He transferred from the reserve force to active service and was promoted to Leutnant (second lieutenant) on 1 July 1942. In early September he was transferred to 6. Staffel of JG 5, now flying the single-engine, single-seat, Messerschmitt Bf 109 fighter. By this date, Weissenberger, as a Zerstörer pilot, had claimed 23 aerial victories in addition to 15 locomotives, 2 FLAK installations, a radio station, a railway station and other ground targets destroyed and was awarded the German Cross in Gold () on 8 September 1942.
Knight's Cross of the Iron Cross At the time, 6. Staffel at the time was based in Petsamo, present-day Pechenga in Murmansk Oblast, Russia. Weissenberger took off on his first Bf 109 combat mission at 14:00 on 15 September 1942 after he had spent a few days familiarizing himself with the single-engine fighter aircraft. The mission, flown by 10 Bf 109 fighters from 6. Staffel, was a combat air patrol in the vicinity of Murmashi. The flight encountered enemy aircraft and Weissenberger filed claims over two Curtiss P-40 Warhawk Lend-Lease fighters shot down at 14:31 and 14:33. These were his first victories claimed on the Bf 109, taking his total to 25 victories. A week later, on 22 September, Weissenberger and 6. Staffel were again patrolling the airspace near the Soviet airfield at Murmashi. During this mission, he claimed three more aerial victories, over Hurricanes shot down between 14:59 and 15:05.
On 27 September 1942, Weissenberger claimed five victories during the course of two combat missions. During the first mission, he shot down a Bell P-39 Airacobra at 11:36. On his second mission, which began at 15:00, he encountered a formation of roughly 30 aircraft, claiming four Hurricanes shot down from 15:49 to 15:56, a time space of seven minutes. This "ace-in-a-day" achievement took his total to 33 aerial victories. On 22 October 1942, Weissenberger was tasked with fighter protection for a reconnaissance aircraft. The engine of his Bf 109 F-4 seized up just west of Murmansk. He managed to nurse his aircraft back to the German lines before bailing out. He was picked up eight hours later by a Gebirgsjäger (mountain infantry) patrol and brought back to his Staffel. Following this event he was given one week of rest. He returned to combat on 30 October 1942, and during two combat missions again achieved "ace-in-a-day" status. He claimed three victories on his first mission and two P-40s at 15:00 and 15:06 on his second mission of the day. This took his total to 38 aerial victories and he was honored with the presentation of the Knight's Cross of the Iron Cross () on 13 November 1942. That day, Feldwebel Heinrich Bartels from 8. Staffel of JG 5 was also awarded the Knight's Cross.
Following the winter break, Weissenberger claimed 33 further victories between 6–28 March 1943. Often he achieved multiple victories per day; six claims on 10 March, victories 43 to 48 on 10 March, victories 49 to 53 on 12 March, and numbers 54 to 57 on 13 March. A ground attack mission against the airfield at Salmiyarvi on 28 March was his last action of the month. Weissenberger claimed three P-39s shot down during this mission, but was himself hit by anti-aircraft fire and had to make a forced landing in his Bf 109 G-2 (Werknummer 13912—factory number). He was picked up and returned by a Fiesler Fi 156 "Storch". On 13 April 1943, a flight of five aircraft from 6. Staffel claimed 18 Soviet aircraft destroyed without loss. Six of the enemy aircraft were credited to Weissenberger, shot down between 17:05 and 17:16. This took his score to 77 aerial victories. On 13 May, he claimed four P-39s destroyed, representing victories 83 to 86, and he was promoted to Oberleutnant on 1 June 1943.
Oak Leaves to the Knight's Cross Weissenberger claimed another five victories on 8 June 1943 north of Murmansk between 17:15 and 17:23. This brought his score to 91 aerial victories and on 15 June he was appointed Staffelkapitän (squadron leader) of 7. Staffel of JG 5. In the period 15 June to 4 July, 7. Staffel claimed 122 aerial victories under his leadership. The heaviest fighting occurred on 22 June over the Karelia Front, during which his Staffel claimed 13 victories, of which three were Hurricanes shot down by Weissenberger. A day later, he again claimed three aircraft shot down, comprising victories 95 to 97. At the time, August Mors was his regular wingman.
On 4 July 1943, Weissenberger led 7. Staffel to 16 aerial victories, while providing fighter cover for a departing German naval task force. First, Weissenberger claimed a Pe-2 reconnaissance aircraft shot down at 21:07. A flight of 25 to 30 enemy bombers and torpedo bombers was then spotted at 21:50. Weissenberger claimed an Ilyushin Il-2 "Sturmovik" at 21:54, his 100th aerial victory. He was the 43rd Luftwaffe pilot to achieve the century mark. The Staffel returned to its airfield at 22:19 without having sustained any losses during the encounter. Weissenberger alone had claimed seven victories during this mission, taking his total to 104 victories.