Ernst Düllberg

On 5 August 1940, II. Gruppe (2nd group) of Jagdgeschwader 27 (JG 27—27th Fighter Wing) was ordered to an airfield at Crépon, France for combat in the Battle of Britain. During this battle, JG 27 was subordinated to the VIII. Fliegerkorps (8th Air Corps). On 8 August, the Gruppenkommandeur (group commander) Hauptmann Werner Andres was shot down. Although rescued, his injuries prevented him from leading the Gruppe. In consequence, Düllberg was briefly put in command until Hauptmann Wolfgang Lippert officially assumed command on 4 September.[2] In parallel, Düllberg was also appointed Staffelkapitän (squadron leader) of 5. Staffel (5th squadron) of JG 27. He replaced Hauptmann Albrecht von Ankum-Frank who had been killed in a crash landing on 2 August.[3] On 18 August, also known as the Hardest Day, Düllberg led the Gruppe on a Junkers Ju 87 dive bomber escort mission to Thorney Island. Near the Isle of Wight, the flight was intercepted by two squadrons of Hawker Hurricane fighters, shortly after Supermarine Spitfire engaged too. During this encounter, I. Gruppe of Sturzkampfgeschwader 77 (StG 77—77th Dive Bomber Wing) suffered heavy losses while Düllberg claimed one of the Hurricanes shot down.[4]

Following the withdrawal from the Eastern Front, II. Gruppe arrived at Döberitz, located approximately 10 kilometers (6.2 miles) west of Staaken, on 24 July. Here, the Gruppe was equipped with the Messerschmitt Bf 109 F-4 and prepared for combat in the North African campaign. On 24 September, 5. Staffel under command of Düllberg began the relocation, arriving at Ayn al-Ġazāla on 1 October.[5] Düllberg claimed his first aerial victory in North Africa on 5 October. That day, 5. Staffel deployed to a makeshift airfield near Gambut, flying multiple missions from Gambut before returning to Ayn al-Ġazāla that evening. At 09:20, Düllberg led a flight of three Bf 109s on a combat air patrol to Sidi Omar where they engaged in aerial combat with four Hurricanes. During this melee, Düllberg claimed one of two Hurricane fighters shot down.[6] The Hurricanes belonged to the RAF No. 33 Squadron. Both pilots were captured and taken prisoner of war.[7] On 22 October, Düllberg shot down the Curtiss P-40 Tomahawk AN230 from the South African Air Force (SAAF) 2 Squadron. The pilot, Lieutenant Denis Hubert Byrne Sturman was killed in action.[8] In preparation for Operation Crusader, Allied air operations targeted the Axis supply lines into North Africa and the airfields in the Cyrenaica. On 12 November, 5. Staffel engaged in aerial combat with P-40s in the area between Sollum and Bardia, claiming three aerial victories, one of which by Düllberg.[9] Allied units lost five aircraft that day, a P-40 belonging to the SAAF 4 Squadron, a Hurricane of the SAAF 40 Squadron, two Hurricanes of the Royal Australian Air Force (RAAF) No. 451 Squadron, and a Hurricane from the No. 2 Photographic Reconnaissance Unit.[10]

On 22 November 1941, Düllberg was wounded in aerial combat south of Sidi Rezegh resulting in a forced landing in his Bf 109 F-4 trop (Werknummer 8466—factory number).[11] After the war it was established that Düllberg's aircraft was hit by Alan Rawlinson.[12] His Bf 109 was hit in the cockpit. Although severely injured, Düllberg flew his damaged aircraft back to the airfield at Ayn al-Ġazāla. He was immediately flown to Athens on a Junkers Ju 52. He was then sent on home-leave for further treatment and a period of convalescence. Düllberg returned to his unit in early February 1942.[13]

On 20 May 1942, Düllberg was succeeded by Oberleutnant Ernst Börngen as commander of 5. Staffel of JG 27.[14] Düllberg was then transffered and made Geschwaderadjutant, the adjutant to the wing commander of JG 27 on 26 May. He held this position until 16 October 1942.[15] On 11 October, Düllberg was appointed Gruppenkommandeur of III. Gruppe of JG 27. He succeeded Hauptmann Erhard Braune who was transferred.[16]

On 30 September 1944, Düllberg was appointed Geschwaderkommodore (wing commander) of Jagdgeschwader 76 (JG 76—76th Fighter Wing). Command of III. Gruppe of JG 27 was then temporarily transferred to Oberleutnant Franz Stigler.[17] Command of JG 76 was transferred from Major Anton Hackl on 7 October. In mid-October, JG 76 was transferred from Freiburg to the southeastern sector of the Eastern Front and placed under the command of Luftflotte 4 (Air Fleet 4).[18]

According to Obermaier, Düllberg was credited with 45 aerial victories claimed in approximately 650 combat missions. This figure includes nine aerial victories on the Eastern Front and 36 over the Western Allies, including ten four-engined bombers.[19] Mathews and Foreman, authors of Luftwaffe Aces — Biographies and Victory Claims, researched the German Federal Archives and states that he was credited 43 aerial victory claims, plus four further unconfirmed claims. This figure includes nine aerial victories on the Eastern Front and another 34 on the Western Front, including nine four-engined bombers.[20]

Victory claims were logged to a map-reference (PQ = Planquadrat), for example "PQ 94 Ost N/AU". The Luftwaffe grid map (Jägermeldenetz) covered all of Europe, western Russia and North Africa and was composed of rectangles measuring 15 minutes of latitude by 30 minutes of longitude, an area of about 360 square miles (930 km²). These sectors were then subdivided into 36 smaller units to give a location area 3 km × 4 km (1.9 mi × 2.5 mi) in size.[21]

• German Cross in Gold on 16 January 1944 as Major in the III./Jagdgeschwader 27[43]
• Knight's Cross of the Iron Cross on 27 July 1944 as Major and Gruppenkommandeur of the III./Jagdgeschwader 27[44][45]