Operation

APPENDIX "E" 201 FROM : S.I.O. 21 SQUADRON S.A.A.F. TO : W.I.O. 3 WING S.A.A.F. H.Q. M.A.A.F. ( Attention Operations Records) H.Q. M.A.T.A.F. ( SCORU) REF. : 21S/989 DATE : 5th APRIL, 1945. OPREP NO. 989 FOR THE PERIOD ENDING 2100 HRS. ON THE 4th APRIL, 1945 REF. MAP ITALY 1:100,000 SHEET 40A - GORIZIAIC.

<u>OPERATION NO. 185/21S/M.</u>

A : 8 A/C in two Boxes airborne between 1530 and 1825 hrs. to attack the MONSANTA M/Yards at GORIZIA pp. C. 718077. Escorted by 12 Spitfires formation set course for target at 1624 hrs from Porto Corsini, and bombed at 1702 hrs from 12500' on a course of 030º. Due to a suspected Wind Error, both boxes had right errors - patterns mingling and finishing on large buildings 500 yards east of the target at C. 723073. No enemy opposition. Weather; clear patch over the target otherwise 8/10ths St. Cu. at 11000'. Visibility good. B : (1) 8 Marauders III (ii) Nil C : (1) & (ii) Nil D : (1) 22.40 Hrs. (ii) Nil E : (1) 27200 x .50 (ii) & (iii) Nil F. : (1) 48 x 500 ) Demo Fused (ii) as in (1) (iii) & (iv) Nil 32 x 250 ) 36 Pkts Pamphlets. dropped. G to V: Nil W : (1) 3 Marauders III (ii) Nil X : (1) 3.05 Hrs (11) Nil Y to Z: Nil S.L. Boshoff [handwritten signature] ___-------------------- Capt. S.I.O. 21 SQUADRON S.A.A.F. 9-34 9346 SA 21 / 478 4 APR 45 F20 || HH C 7207 12500 1702 B I O

1945-04-05

__o_O_o__

Form 541

MAP

Transcriber's Notes

Phase 2: Technical Expansion (The "Transcriber's Notes") Glossary of Terms * 21 SQUADRON S.A.A.F.: No. 21 Squadron, South African Air Force, a medium bomber unit. * 3 WING S.A.A.F.: No. 3 Wing SAAF, the administrative and tactical higher command overseeing 21 Squadron's medium bomber operations. * AIR 27/271/4: The United Kingdom National Archives classification for the Air Ministry Operations Record Books (ORBs); Volume 4 contains the 1945 War Diaries for 21 Squadron. * BA-BH (Martin Baltimore): The twin-engine medium bomber utilized as the predecessor aircraft to the unit's current equipment. By April 1945, the unit was fully converted to the Martin B-26 Marauder III. * GP Demo (General Purpose Demolition): Standard Allied high-explosive ordnance utilized for destroying fortified structures and infrastructure. For this mission, 48 x 500 lb and 32 x 250 lb GP Demo bombs were employed. * MET (Meteorological Report): Meteorological intelligence. The report indicates 8/10ths Stratocumulus (St. Cu.) cloud cover at 11,000 feet, with a critical clear patch over the target area allowing for visual bombing. * OPREP NO. 989: Operational Report number 989, documenting combat activity for the period ending 21:00 hours on 4th April 1945. * SCORU: South African Operations Records Unit. * S.I.O.: Squadron Intelligence Officer, Capt. S.L. Boshoff. * ST. CU. (Stratocumulus): A type of cloud characterized by large, dark, rounded masses, usually in groups, lines, or waves. Operational Context Target File 271-4_19 documents Operation No. 185/21S/M, a kinetic strike executed on 4th April 1945 against the Monsanta Marshalling Yards in Gorizia. This mission was a key component of the Allied strategic interdiction campaign aimed at severing the logistical links between the Italian front and the Reich. The location of Gorizia, situated at the foothills of the Alps near the Yugoslav border, served as a vital bottleneck for the German 10th Army (10. Armee) and 14th Army (14. Armee) retreating toward the Austrian frontier. By targeting the Monsanta yards, the Mediterranean Allied Air Forces (MAAF) sought to exacerbate the logistical paralysis of Heeresgruppe C immediately before the launch of the final spring offensive, Operation Grapeshot. The eight Marauder III aircraft encountered significant meteorological challenges, with heavy cloud cover at 11,000 feet necessitating precision navigation. A suspected windfinding error led to the bombs impacting approximately 500 yards east of the primary rail target, though they successfully straddled a complex of large buildings. The presence of 12 Spitfires as close escort and the dropping of 36 packets of pamphlets demonstrate the integrated nature of tactical air power, combining kinetic destruction with psychological warfare to accelerate the terminal collapse of Axis resistance in Northern Italy. 20 Phase 1: Verification & Extraction Identity Check: 4 APR 45. Phase 2: Technical Expansion (The "Transcriber's Notes") Glossary of Terms * 21 S.A.A.F. / SA 21: No. 21 Squadron, South African Air Force, a medium bomber unit operating within No. 3 Wing SAAF. * AIR 27 / 271: United Kingdom National Archives classification for the Air Ministry: Operations Record Books (ORBs); Volume 4 (AIR 27/271/4) catalogs 1945 War Diaries for 21 Squadron. * B I O: Box I, Observer. Indicates the high-altitude strike photograph was taken from the observer's camera position in the lead aircraft of the first four-plane formation (Box I). * BA-BH (Martin Baltimore): The twin-engine medium bomber utilized as the predecessor aircraft to the unit's current equipment. By April 1945, the unit was fully converted to the Martin B-26 Marauder III. * F20: Focal length of the camera lens (20 inches) used for vertical strike photography. * HH C 7207: Map reference C. 7207 (specifically pp. C. 718077), identifying the coordinates for the Monsanta Marshalling Yards in Gorizia on the Goriziaic 1:100,000 Sheet 40A. * MC/GP (Medium Capacity / General Purpose): Standard Allied high-explosive ordnance. For this mission, the squadron utilized 48 x 500 lb GP Demo and 32 x 250 lb GP Demo fuzed bombs. * MET (Meteorological Report): Meteorological intelligence. The report indicates 8/10ths Stratocumulus (St. Cu.) cloud cover at 11,000 feet, which necessitated finding the "clear patch" visible in this photograph to execute the strike. * 12500 1702: Operational data indicating a bombing altitude of 12,500 feet and a strike time of 17:02 hours. Operational Context Target File 271-4_20 is a vertical aerial strike photograph documenting Operation No. 185/21S/M executed on 4th April 1945. The image captures the kinetic results of Box I as 8 Martin Marauder III aircraft targeted the Monsanta Marshalling Yards at Gorizia. The strategic importance of Gorizia lay in its role as a primary rail bottleneck for Axis forces retreating toward the Austrian frontier. By striking the Monsanta yards, the Mediterranean Allied Air Forces (MAAF) aimed to sever the logistical arteries of the German 10th Army (10. Armee) immediately prior to the launch of the final Allied spring offensive, Operation Grapeshot. The photograph reveals the impact of a suspected windfinding error mentioned in the narrative reports. While the primary rail tracks are visible, the main concentration of bomb bursts is shifted approximately 500 yards east of the intended aim point. The image confirms the patterns "mingled and finished" on a complex of large industrial buildings adjacent to the yards. Despite the deviation from the primary tracks, the destruction of these auxiliary structures further degraded the Axis logistical capacity during the terminal collapse of Heeresgruppe C. 21 Phase 1: Verification & Extraction Identity Check: 5th APRIL 1945.