Operation

APPENDIX "S" 329 TO : H.Q. MAAF (attention 23rd SCORU) H.Q. NATAF (attention 2nd Command Unit 23rd SCORU) SAOA SAAF FROM : SIO 21 SQUADRON SAAF REF : 21S/721 DATE : 14th June, 1944 OPREP No 721 for period ending 21.00 hrs on 14/6/44 REF MAP : ITALY 1:100,000 Sheet 125 FERMO 11 Balts airborne from BIFERNO at 13.06 hrs to attack the MACERATA RAILWAY VIADUCT at S686116. Six Spits close escort from Penna Point. Formation bombed in boxes line astern at 14.58 from 12,000' on a course of 310°. Both boxes straddled target with a concentrated pattern, with direct hits on viaduct, railway line and nearby road. Moderate, fairly accurate H/A/A from target area and from MONTE- GRANARO (R7005). Weather: clear, but hazy. All aircraft down by 15.00 hrs. B: (i) 6 Balts IV (ii) NIL (i) 5 Balts V (ii) NIL C: NIL D: (i) 11.30 hrs (ii) NIL (i) 9.35 hrs (ii) NIL E: (i) 19,200 x .30 1,800 x .303 4,200 x .50 (ii) & (iii) NIL (i) 16,000 x .30 1,500 x .303 3,500 x .50 (ii) & (iii) NIL F: (i) 24 x 500 MC (ii) as above (iii) & (iv) NIL FUSED: 41 fused 36 det 28 pist TAIL 3 " 52 det 37 pist TAIL (6 & 12 delay) to V: NIL W: (i) 3 Balts Mk III (ii) NIL (i) 1 Balt Mk IV (ii) NIL X: (i) 1.45 hrs (ii) NIL (i) 1.00 hrs (ii) NIL Y & Z: NIL FL Major Dalling D.F.C. Hallick Capt. S.I.O., 21 Squadron, SAAF.

1944-06-14

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Form 541

MAP

Transcriber's Notes

Transcriber's Historical & Tactical Notes: * Target: The Macerata Viaduct (Strategic Success): * The Objective: The target was the "MACERATA RAILWAY VIADUCT at S686116". Macerata, a provincial capital in the Marche region, sits on a ridge between the Chienti and Potenza rivers. The railway line serving it involved significant engineering works like viaducts to negotiate the hilly terrain. Destroying a viaduct was far more effective than cutting a simple track, as rebuilding a stone or steel span took weeks or months compared to days for laying new rails on flat ground. * The Result: The report claims a highly successful strike: "Both boxes straddled target... with direct hits on viaduct, railway line and nearby road.". This effectively severed the line, contributing to the strangulation of German supply routes as the Front moved north toward Ancona. * Defensive Fire (H.A.A.): * Flak Trap: The formation encountered "Moderate, fairly accurate H/A/A [Heavy Anti-Aircraft fire]" from the target area and from "MONTEGRANARO (R7005).". Montegranaro is a hilltop town situated south-east of Macerata. The specific identification of fire coming from a neighboring town suggests the Germans had set up a coordinated flak belt in this sector to protect the vital rail infrastructure. * Ordnance Fusing Details: * Pistol Fuses: Section F provides specific technical detail on the fuses: "41 fused 36 det 28 pist TAIL". This refers to the No. 28 Tail Pistol used in British bombs. The absence of nose fusing ("TAIL" is emphasized) suggests they wanted the bomb to remain intact upon initial impact with the structure (viaduct masonry) before detonating a split-second later inside the structure, maximizing structural damage rather than surface blast. * Delay Fuses: As standard for interdiction, "3... (6 & 12 delay)" bombs were included to disrupt repair crews. * Leadership: * Major Dalling D.F.C.: The mission was led by Major Dalling D.F.C. (Flight Leader). This was a busy day for him; documents show he was highly active in leading these strikes just two weeks before his tour expired (June 30th). His consistent leadership of successful missions (hitting the viaduct here, despite the flak) underscores why he was a decorated officer. * Abbreviations: * MAAF: Mediterranean Allied Air Forces. * NATAF: Northwest African Tactical Air Force. * SCORU: Statistical Control and Operations Research Unit. * H/A/A: Heavy Anti-Aircraft fire. * MC: Medium Capacity (High Explosive). * S.I.O.: Squadron Intelligence Officer. 41 Verification: Target File Verification: The document is dated 16th June, 1944 in the "DATE" field. It is a Sortie Report (No. 722) labeled 330 in the top right corner.