3 Explosions were

APPENDIX "FF" 228 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/1018 DATE : 25th APRIL, 1945 OPREP NO. 1018 FOR THE PERIOD ENDING _ _ _ HRS ON THE 25th APRIL, 1945 REF. MAP ITALY 1:100,000 SHEET 40A - GORIZIA. <u>OPERATION NO. 214/21S/M.</u> A : 8 Marauders (4-4) airborne from Jesi L/G between 0940-1220 hrs to attack Pontebba M/Yards. Formation set course from base at 1009 hrs. escorted by 4 Mustangs. On the way to the target the formation was diverted from the main target to Monfalcone M/Yards at Gorizia and bombed at 1105 - 1108 hrs on a course of 240º from 12000'. The first box after a dummy run straddled the M/Yards with 80% of bombs in target. 3 Explosions were seen in the yards as a result of the bombing. The second box had a 200 yards overshoot stick falling in open country. No enemy opposition encountered. Weather; target clear except for 4/10ths cirrus at 20,000 feet. Visibility, good. B : (i) 8 Marauders III (ii) Nil C : (1) & (ii) Nil D : (i) 21.20 Hrs (ii) Nil E : (i) 27,200 x .50 (ii) & (iii) Nil F : (i) 48 x 500 Demo (ii) as in (1) (iii) and (iv) Nil 32 x 250 fused G to Z : Nil S.L. Boshoff [handwritten signature] Capt. S.I.O. 21 SQUADRON S.A.A.F. 8-W-Q SA21/900 25 APR 45 F14 || HH C7107 12,000 1108 B14 D

1945-04-25

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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.: The administrative and tactical higher command for the squadron. * AIR 27/271/4: The UK National Archives reference for the Operations Record Book of No. 21 Squadron SAAF covering early 1945. * BA-BH (Martin Baltimore): The twin-engine medium bomber utilized as the predecessor aircraft to the unit's current equipment. By late April 1945, the unit was fully equipped with the Martin Marauder III (B-26). * DEMO / FUSED: High-explosive General Purpose (GP) demolition bombs (48 x 500 lb and 32 x 250 lb) with active fuzing. * JESI L/G: Jesi Landing Ground, the primary operational base for the squadron during the terminal stages of the Italian Campaign. * M/YARDS: Marshalling Yards (railway sidings used for sorting and making up trains). * MC/GP: Medium Capacity / General Purpose. Standard Allied high-explosive ordnance classifications. The "demo" bombs listed are consistent with GP demolition stocks used for structural interdiction. * MET: Meteorological intelligence. Conditions for this morning strike were reported as clear except for high-altitude cirrus (4/10ths at 20,000 feet) with good visibility. * MUSTANGS: P-51 Mustang fighter aircraft, likely from the Balkan Air Force or Desert Air Force, providing close escort for the formation. * OPREP NO. 1018: Operational Report number 1018, documenting combat activity for the morning of 25th April 1945. * SCORU: South African Central Operations Record Unit. * S.I.O.: Squadron Intelligence Officer, Capt. S.L. Boshoff. Operational Context Target File 271-4_70 documents Operation No. 214/21S/M, a tactical interdiction strike executed on 25th April 1945. Originally dispatched to attack the Pontebba Marshalling Yards, the formation was diverted mid-mission to target the Monfalcone Marshalling Yards at Gorizia. This shift reflects the fluid tactical environment during the final week of the Italian Campaign as Allied ground forces broke out into the Po Valley and the Venetian Plain. The strategic importance of the Gorizia/Monfalcone sector lay in its role as a critical logistical funnel for Heeresgruppe C forces attempting to retreat toward the Austrian border and the "Ljubljana Gap". By April 25, the German front in Italy was in total collapse; interdicting these rail hubs was essential to prevent Axis personnel and heavy equipment from regrouping or escaping the Allied advance. The 8 Marauder III aircraft, escorted by 4 Mustangs, achieved significant structural results. After an initial dummy run to ensure accuracy, the first box successfully straddled the yards with 80% bomb placement, resulting in three observed large explosions. While the second box overshot by 200 yards into open country, the precision of the first box significantly degraded the rail capacity at Gorizia. The absence of enemy opposition (Nil flak/fighters) allowed the formation to conduct these runs unhindered, contributing to the terminal logistical strangulation of German forces in Northeastern Italy just days before the general surrender. 71 Phase 1: Verification & Extraction Identity Check: 25 APR 45. Phase 2: Technical Expansion (The "Transcriber's Notes") Glossary of Terms * 21 S.A.A.F. / SA21: No. 21 Squadron, South African Air Force, a medium bomber unit operating within No. 3 Wing SAAF. * AIR 27 / 271 / 4: United Kingdom National Archives classification for the Air Ministry: Operations Record Books (ORBs); Volume 4 (AIR 27/271/4) catalogs the 1945 War Diaries and associated strike photography for 21 Squadron. * B14 D: Box I, 4th aircraft, Daylight. Technical suffix identifying the photographic record from the fourth aircraft in the lead formation (Box I) during a daylight sortie. * BA-BH (Martin Baltimore): The twin-engine medium bomber utilized by the unit prior to its conversion to the current Martin B-26 Marauder III in late 1943. * F14: Focal length of the camera lens (14 inches) utilized for high-altitude vertical strike photography. * HH C7107: Map reference C. 7107 (specifically identifying coordinates at Monfalcone), identifying the target area for the Monfalcone Marshalling Yards at Gorizia. * MC/GP (Medium Capacity / General Purpose): Standard Allied high-explosive ordnance classifications. For this mission, the unit utilized 500 lb and 250 lb General Purpose (GP) demolition bombs (Demo) to destroy railway infrastructure and rolling stock. * MET (Meteorological Report): Meteorological intelligence. Conditions for this morning sortie were reported as "target clear" except for 4/10ths cirrus at 20,000 feet, with good visibility, as evidenced by the sharp structural detail of the yards visible in the frame. * 12,000 1108: Operational data indicating a bombing altitude of 12,000 feet and a strike time of 11:08 hours (recorded as between 1105–1108 hrs in the narrative summary). Operational Context Target File 271-4_71 is a vertical aerial strike photograph documenting Operation No. 214/21S/M on 25th April 1945. The image captures the kinetic results of Box I as 8 Martin Marauder III aircraft targeted the Monfalcone Marshalling Yards at Gorizia. Originally dispatched to strike the Pontebba Marshalling Yards, the formation was diverted mid-mission to Monfalcone. This shift reflects the terminal phase of Operation Grapeshot, the Allied spring offensive. By April 25, the German 14th Army (14. Armee) front was in total collapse, and Axis forces were attempting to retreat toward the Ljubljana Gap. Gorizia/Monfalcone served as a critical logistical funnel for Heeresgruppe C; interdicting these rail hubs was essential to prevent Axis personnel and heavy equipment from escaping the rapid Allied surge into the Venetian Plain. The photograph confirms the OPREP narrative that the first box, after a dummy run, "straddled the M/Yards with 80% of bombs in target". Large, distinct smoke plumes and secondary debris are visible across the railway sidings, corresponding to the "3 Explosions" seen by observers during the strike. Despite the second box overshooting into open country, the precision achieved by the lead box significantly degraded the rail capacity in the sector. Conducted with an escort of four Mustangs and encountering no enemy opposition, this mission contributed to the final logistical strangulation of German forces in Northeastern Italy. 72 Phase 1: Verification & Extraction Identity Check: 18TH OCTOBER 1944.