| Honorific Prefix: | Leutnant |
| Otto Gaiser | |
| Birth Date: | 5 October 1919 |
| Birth Place: | Reutlingen |
| Death Place: | disappeared near Berdychiv, Ukraine |
| Serviceyears: | 1942–1944 |
| Rank: | Leutnant (Posthumously) |
| Unit: | JG 51 |
| Battles: | |
| Awards: | Knight's Cross of the Iron Cross |
Otto Gaiser (5 October 1919 – 22 January 1944) was a Luftwaffe ace with 66 confirmed kills, and he was the recipient of the Knight's Cross of the Iron Cross during World War II. The Knight's Cross of the Iron Cross was awarded to recognise extreme battlefield bravery or successful military leadership.
In 1942, Gaiser was assigned to Jagdgeschwader 51 (JG 51—51st Fighter Wing) where he served as Rudolf Wagner's wingman. Wagner went on to become a Luftwaffe ace as well. Gaiser claimed his first kill on 16 March 1943. That day, he shot down a Soviet Lavochkin-Gorbunov-Gudkov LaGG-3 fighter near Vyazma. Gaiser served with 10. Staffel of JG 51 which at the time was under the command of Oberleutnant Horst-Günther von Fassong. He achieved his 10th victory on 11 July, when he claimed another LaGG-3 shot down. Gaiser claimed 17 victories in August, including five Soviet Ilyushin Il-2 ground-attack aircraft shot down on 14 August, making him an "ace-in-a-day".
On 22 January 1944, Gaiser was last seen in combat with Ilyushin Il-2 ground-attack aircraft near Berdychiv, Ukraine. He has remained missing to this day. It is thought he became a victim of the Soviet ground defences. On 9 June 1944 he was posthumously awarded the Knight's Cross of the Iron Cross (German: Ritterkreuz des Eisernen Kreuzes) and promoted to Leutnant. Before he disappeared, Gaiser was credited with 66 victories in 380 missions. All his air victories were achieved over the Eastern Front (World War II) and included 21 Il-2 Sturmoviks.
According to US historian David T. Zabecki, Gaiser was credited with 66 aerial victories. Mathews and Foreman, authors of Luftwaffe Aces – Biographies and Victory Claims, researched the German Federal Archives and found records for 66 aerial victory claims, all of which claimed on the Eastern Front.
Victory claims were logged to a map-reference (PQ = Planquadrat), for example "PQ 35 Ost 36624". The Luftwaffe grid map (German: 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 360sqmi. These sectors were then subdivided into 36 smaller units to give a location area 3x in size.
| Chronicle of aerial victories | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Claim | Date | Time | Type | Location | Claim | Date | Time | Type | Location | |
| – 10. Staffel of Jagdgeschwader 51 – Eastern Front — 4 February – 31 December 1943 | ||||||||||
| 1 | 16 March 1943 | 15:40 | LaGG-3 | PQ 35 Ost 36624, 30km (20miles) northeast of Vyazma | 32 | 24 August 1943 | 05:44 | Pe-2 | 2km (01miles) east of Krasnaya Yaruga | |
| 2 | 11 April 1943 | 05:56 | Pe-2 | PQ 35 Ost 16621, 5km (03miles) south of the Ryta | 33 | 13 September 1943 | 11:25 | Boston | 1km (01miles) south of Nowo-Troizkoje | |
| 3 | 7 May 1943 | 04:55 | Il-2 | PQ 35 Ost 63174, 2km (01miles) south of Shidkowa 10km (10miles) west of Zmiyekka | 34 | 14 September 1943 | 06:06 | Yak-1 | PQ 35 Ost 69684, east of Volhynia | |
| 4 | 7 May 1943 | 05:08 | Il-2 | PQ 35 Ost 63191, 1km (01miles) north of Prokowskoje 10km (10miles) east of Zmiyekka | 35 | 19 September 1943 | 15:13 | Il-2 m.H. | 1km (01miles) southeast of Synelnykove | |
| 5 | 14 May 1943 | 18:27 | La-5 | PQ 35 Ost 63344, 12km (07miles) east of Semenkowo 15km (09miles) southwest of Glazunowka | 36 | 20 September 1943 | 06:38 | Il-2 m.H. | 10km (10miles) east of Dnipropetrovsk | |
| 6 | 2 June 1943 | 07:45 | LaGG-3 | PQ 35 Ost 63563, 10km (10miles) southwest of Maloarkhangelsk | 37 | 20 September 1943 | 06:40 | Il-2 m.H. | PQ 34 Ost 49534, 4km (02miles) southwest of Nowosselka | |
| 7 | 6 July 1943 | 15:08 | Il-2 m.H. | PQ 35 Ost 63583, 2km (01miles) west of Ponyri 20km (10miles) southwest of Maloarkhangelsk | 38♠ | 26 September 1943 | 08:28 | Yak-1 | 1km (01miles) southwest of Novoselovka | |
| 8 | 9 July 1943 | 08:43 | Il-2 m.H. | PQ 35 Ost 63713, 3km (02miles) west of Stanovoye Dmitriyevka-L'govskiy area | 39♠ | 26 September 1943 | 13:32 | Yak-1 | PQ 34 Ost 58543, 3km (02miles) west of Orljansk east of Dnipropetrovsk | |
| 9 | 10 July 1943 | 12:50 | LaGG-3 | PQ 35 Ost 63513, 3km (02miles) southwest of Nikolskoje 15km (09miles) south-southwest of Maloarkhangelsk | 40♠ | 26 September 1943 | 13:38 | Yak-1 | PQ 34 Ost 58513, 1km (01miles) south of Majatschka | |
| 10 | 11 July 1943 | 18:02 | Il-2 m.H. | 7km (04miles) southwest of Maloarkhangelsk 10km (10miles) southwest of Maloarkhangelsk | 41♠ | 26 September 1943 | 16:38 | Yak-1 | PQ 34 Ost 58563, 1km (01miles) east of Kalinowka | |
| 11 | 12 July 1943 | 07:05 | La-5 | PQ 35 Ost 63222, 4km (02miles) northeast of Panikowez 10km (10miles) east of Zalegoshch | 42♠ | 26 September 1943 | 16:39 | Yak-1 | PQ 34 Ost 58562, 1km (01miles) north of Krental | |
| 12 | 12 July 1943 | 19:30 | La-5 | PQ 35 Ost 63222, 3km (02miles) north of Malinowez 10km (10miles) east of Zalegoshch | 43 | 27 September 1943 | 06:21 | La-5 | PQ 34 Ost 59752, 2km (01miles) east of Aleksejewka | |
| 13 | 13 July 1943 | 07:20 | MiG-3 | PQ 35 Ost 74753, 2km (01miles) west of Raksino 25km (16miles) south of Lipitsy | 44 | 27 September 1943 | 09:40 | Yak-1 | PQ 34 Ost 58684, 1km (01miles) north of Iwanowka | |
| 14 | 13 July 1943 | 18:32 | LaGG-3 | PQ 35 Ost 64882, 2km (01miles) south of Krassnij 15km (09miles) northeast of Zalegoshch | 45 | 27 September 1943 | 16:30 | P-39 | PQ 34 Ost 58642, 1km (01miles) northwest of Tiefenbrunn | |
| 15 | 17 July 1943 | 08:13 | Il-2 m.H. | PQ 35 Ost 63672, 2km (01miles) west of Kusnetschki 15km (09miles) south-southeast of Maloarkhangelsk | 46 | 30 September 1943 | 11:32 | La-5 | PQ 34 Ost 49311, 2km (01miles) east of Annewka | |
| 16 | 2 August 1943 | 08:33 | Il-2 m.H. | PQ 35 Ost 53631, 6km (04miles) south-southeast of Shislowo vicinity of Trosna | 47 | 1 October 1943 | 10:40 | Yak-1 | 1km (01miles) southwest of Jakowlewka | |
| 17 | 2 August 1943 | 08:35 | Il-2 m.H. | PQ 35 Ost 63633, 3km (02miles) north of Koslowko vicinity of Trosna | 48 | 3 October 1943 | 11:04 | Yak-1 | PQ 34 Ost 49323, 1km (01miles) northeast of Domotkan | |
| 18 | 2 August 1943 | 08:40 | Il-2 m.H. | PQ 35 Ost 53661, 7km (04miles) northeast of Trossna 10km (10miles) southwest of Trosna | 49 | 7 October 1943 | 10:00 | Yak-9 | 1km (01miles) south of Perewolotschnaja | |
| 19 | 6 August 1943 | 14:37 | La-5 | PQ 35 Ost 53182, Schachowzy vicinity of Schachowzny | 50 | 8 October 1943 | 15:30 | Yak-9 | 5km (03miles) south of Perewolotschnaja | |
| 20 | 10 August 1943 | 11:13 | Il-2 m.H. | PQ 35 Ost 61751, 6km (04miles) northeast of Dergatschij | 51 | 12 October 1943 | 12:48 | Il-2 m.H. | PQ 26 Ost 15513, 1km (01miles) east of Demkino | |
| 21 | 10 August 1943 | 11:15 | Il-2 m.H. | PQ 35 Ost 61593, 9km (06miles) northwest of Lipzy | 52 | 14 October 1943 | 08:07 | Yak-1 | PQ 35 Ost 15523, 2km (01miles) east of Nikolenka | |
| 22 | 10 August 1943 | 13:53 | Yak-1 | PQ 35 Ost 61593, 2km (01miles) west of Ljutowka | 53 | 14 October 1943 | 11:33 | Pe-2 | PQ 35 Ost 15723, 2km (01miles) east of Studenez | |
| 23 | 11 August 1943 | 07:32 | La-5 | PQ 35 Ost 70722, north of Izyum | 54 | 14 October 1943 | 11:37 | Pe-2 | PQ 35 Ost 15761, 1km (01miles) north of Rasdel | |
| 24♠ | 14 August 1943 | 18:17 | Il-2 m.H. | 4km (02miles) north of Bachmetjewka | 55 | 17 October 1943 | 10:54 | Yak-1 | PQ 35 Ost 06193, southeast of Shabino | |
| 25♠ | 14 August 1943 | 18:19 | Il-2 m.H. | PQ 35 Ost 50254, 2km (01miles) northwest of Pankowka | 56 | 18 October 1943 | 08:27 | Yak-1 | PQ 26 Ost 97893, 7km (04miles) northeast of Nevel | |
| 26♠ | 14 August 1943 | 18:22 | Il-2 m.H. | PQ 35 Ost 50224, 1km (01miles) north of Buzkiy | 57 | 1 November 1943 | 13:17 | Il-2 m.H. | 2km (01miles) northwest of Bolshaja-Snamenka | |
| 27♠ | 14 August 1943 | 18:23 | Il-2 m.H. | PQ 35 Ost 50223, 3km (02miles) north of Dobropolye | 58 | 5 November 1943 | 11:24 | La-5 | PQ 34 Ost 49714, 1km (01miles) east of Udatschnaja | |
| 28♠ | 14 August 1943 | 18:25 | Il-2 m.H. | PQ 35 Ost 50221, 3km (02miles) north of Dobropolye | 59 | 27 November 1943 | 13:50 | Yak-9 | PQ 34 Ost 47231, 5km (03miles) southwest of Wesseloje | |
| 29 | 15 August 1943 | 13:28 | Il-2 m.H. | PQ 35 Ost 70782, 4km (02miles) west of Kotijary | 60 | 28 November 1943 | 11:10 | La-5 | 2km (01miles) southeast of Jelisarowo railway station 45km (28miles) south-southwest of Dnipropetrovsk | |
| 30 | 18 August 1943 | 05:54 | La-5 | 4km (02miles) northwest of Dolgenskaja | 61 | 28 November 1943 | 13:25 | Yak-9 | PQ 34 Ost 48642, 5km (03miles) south of Dnjeprowka | |
| 31 | 22 August 1943 | 17:35 | Pe-2 | PQ 35 Ost 50223, 3km (02miles) southeast of Dopropolje | ||||||
| – 10. Staffel of Jagdgeschwader 51 – Eastern Front — 1 January – 22 January 1944 | ||||||||||
| 62 | 12 January 1944 | 12:10 | Il-2 | 40km (30miles) southeast of Vinnytsia | 65 | 15 January 1944 | 14:31 | Il-2 | 40km (30miles) east of Vinnytsia | |
| 63 | 15 January 1944 | 09:17 | Yak-4 | 30km (20miles) east-northeast of Vinnytsia | 66 | 15 January 1944 | 14:36 | Il-2 | 45km (28miles) south-southeast of Koziatyn | |
| 64 | 15 January 1944 | 09:20 | Yak-4 | 25km (16miles) south-southeast of Koziatyn | ||||||
sv:Christer Bergström
. Identifying a Luftwaffe Planquadrat . Bergström Black Cross/Red Star website . 26 July 2022 . . https://web.archive.org/web/20181222042030/http://www.bergstrombooks.elknet.pl/bc-rs/planquadrat.htm . 22 December 2018 . dead .de:Walther-Peer Fellgiebel
. 2000 . 1986 . Die Träger des Ritterkreuzes des Eisernen Kreuzes 1939–1945 — Die Inhaber der höchsten Auszeichnung des Zweiten Weltkrieges aller Wehrmachtteile . The Bearers of the Knight's Cross of the Iron Cross 1939–1945 — The Owners of the Highest Award of the Second World War of all Wehrmacht Branches . de . Friedberg, Germany . Podzun-Pallas . 978-3-7909-0284-6.