Operation

P O S T A G R A M [Handwritten annotation] 'L' 158 : H.Q. R.A.F. M.E. : S.I.O. 21 SQUADRON, S.A.A.F. Serial No. : 21/Sqdn 313 Date : 11 JUN 43 OPREP No. 313 for period ending 1300 hrs. 11 JUN 43 A Batteries 4A & 5 PANTELLERIA (Ref. Map: PANTELLERIA 1:25,000. PANTELLERIA Substitute Map 1A) B 12 Baltimores (7 Mk. 111 & 5 Mk. 111A) C (1) Medium level bombing. (11) 7500 ft. (111) 0645 hrs. L.T. D (1) 1 x 500 lb. S .A.P.) 2 x 500 lb. M.C. ) 49 Det. 28 Pistol. Tail fused. 45 x 500 lb. G.P. ) .025 delay. (11) Nil. (111) "Both patterns scored - one pattern straddled 4A, scoring hit between two guns (26-yard miss from each) Subsequent photos show three emplacements destroyed. The other pattern fell rather short, but end of pattern scored one hit right on emplacement" (Signal from T.B.F. assessing results of this raid) E Nil. F Nil. G Nil. H (1) 0550 hrs. L.T. (11) 21 hrs. 00 mins. J General weather & visibility fair. 5/10 to 6/10 Cu. & St.Cu. at base 12,000 ft. K Nil. Comm. Nil. T.O.O. 1300 hrs. 11 JUN 43. [Signature] ....................Capt. S.I.O. 21 SQUADRON, S.A.A.F.

1943-06-11

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Form 541

MAP

Transcriber's Notes

Phase 2: Technical Expansion Glossary of Terms The document header utilizes the classification POSTAGRAM, which designates a standardized military message dispatched through expedited telegraphic or courier networks. The routing abbreviation H.Q. R.A.F. M.E. expands to Headquarters Royal Air Force Middle East, the supreme theater-level command authority. The transmitting authority is identified as the S.I.O., or Squadron Intelligence Officer, representing 21 SQUADRON, S.A.A.F., the South African Air Force. The acronym OPREP signifies an Operational Report, summarizing tactical activities over a specific timeframe. The aircraft utilized are Baltimores, referring to the Martin Baltimore twin-engine medium bomber, with Mk. 111 and Mk. 111A designating the Mark III and Mark IIIA variants . The abbreviation L.T. stands for Local Time. Ordnance parameters utilize S.A.P. for Semi-Armour Piercing, M.C. for Medium Capacity, and G.P. for General Purpose 500-pound munitions. The technical firing sequence involved a 49 Det., or Detonator Number 49, used in conjunction with a 28 Pistol (impact-delay pistol) configured with a .025 fractional delay and tail fused to ensure structural penetration. The intelligence assessment is cited as a Signal from T.B.F., referring to Tactical Bomber Force. Meteorological notations log Cu. for Cumulus and St.Cu. for Stratocumulus clouds . Finally, Comm. stands for Communications flying, and T.O.O. indicates the Time of Origin for the message transmission. Operational Context This operational report, dated June 11, 1943, records 21 Squadron SAAF's final tactical strike on Pantelleria, executed just hours before the island's historic surrender during Operation Corkscrew . Following the Allied victory in North Africa, the neutralization of Pantelleria was a strategic prerequisite for Operation Husky, the invasion of Sicily, to secure maritime corridors in the Strait of Sicily. The squadron's twelve Martin Baltimore bombers targeted entrenched coastal artillery at Batteries 4A and 5 at 0645 hours from an altitude of 7,500 feet. The mission narrative, corroborated by photo-reconnaissance and Tactical Bomber Force analysis, indicates significant precision during this culminating phase. One bomb pattern successfully straddled Battery 4A, scoring an direct hit between two gun positions and destroying three emplacements. A second pattern, despite falling short of its primary aim point, managed to secure a direct hit on a separate emplacement. The total lack of enemy anti-aircraft response (Nil) further confirms the comprehensive suppression of the island's defensive batteries by Allied air power. This sortie represents the final kinetic pressure applied by the MAAF before the garrison officially capitulated later that day, marking the first instance in military history where a major fortified position surrendered solely due to aerial bombardment without a naval landing. 208 Phase 1: Verification & Extraction Identity Check The exact date found in the 'Date' column of the image is 11 JUN 43.