Operation

P O S T A G R A M 'F' 146 : H.Q. R.A.F. M.E. : S.I.O. 21 SQUADRON, S.A.A.F. No. : 21 Sqdn/307 : 7 JUN 43 OPREP No. 307 for period ending [strike-through: XX] 2100 hrs. 7/6/43 A Battery positions 19 and 19A (Ref. Map: PANTELLERIA 1:25,000) B 12 Baltimores (7 Mk. 111 & 5 Mk. 111A) C (i) Medium level bombing. (ii) 8,000 ft. (iii) 1916 hrs. L.T. D (i) 12 x 500 S.A.P. ) 12 x 500 G.P. ) All 49 Det. .025 delay. Tail fused 24 x 500 M.C. ) only. (ii) 400 rounds .303 and 350 rounds .5 ammunition. (iii) Bombs burst from F194056 towards F 190061. Two gun positions received direct hits. No other results observed. E One A/C, received a minor hole from Ack/Ack. F Nil. G At 1922 hrs. 10 miles from PANTELLERIA HARBOUR on course of 290 deg. an unidentified fighter was seen to go down with smoke trailing from it and another unidentified fighter on its tail. H (i) 1824 hrs. L.T. (ii) 18 hrs. 00 mins. J General weather good. Visibility fair. No cloud. K Moderate but inaccurate HAA. Comm. Nil. T.O.O. 2100 hrs. 7 JUN 43. [Signature] ....................Capt. S.I.O. 21 SQUADRON, S.A.A.F.

1943-06-07

__o_O_o__

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 routed through expedited telegraphic or courier networks. The handwritten alphanumeric 'F' 146 operates as an internal squadron filing metric. The abbreviation H.Q. R.A.F. M.E. denotes Headquarters Royal Air Force Middle East, the supreme theater-level command authority. The transmitting officer is the S.I.O., or Squadron Intelligence Officer, representing 21 SQUADRON, S.A.A.F., which expands to the South African Air Force. The acronym OPREP signifies an Operational Report, detailing daily tactical execution. The aircraft utilized are Baltimores, referring to the Martin Baltimore twin-engine medium bomber , with the typed Mk. 111 & 5 Mk. 111A representing a clerical rendering of Mark III and Mark IIIA variants. L.T. stands for Local Time. Ordnance abbreviations include S.A.P. for Semi-Armour Piercing, G.P. for General Purpose, and M.C. for Medium Capacity munitions. These bombs utilized a 49 Det. (Detonator) with a .025 delay mechanism. The abbreviation A/C designates Aircraft, while Ack/Ack is a phonetic colloquialism utilized interchangeably with HAA (Heavy Anti-Aircraft) to describe enemy anti-aircraft artillery fire. Comm. represents Communications flying, and T.O.O. identifies the Time of Origin for the document's transmission. Operational Context This operational report, cataloged for June 7, 1943, records 21 Squadron SAAF's continued participation in Operation Corkscrew, the concentrated aerial reduction of Pantelleria . Following the axis defeat in Tunisia, Allied strategy required the neutralization of this fortified Italian island to secure the maritime corridor through the Strait of Sicily, a prerequisite for the impending Operation Husky. The squadron's twelve Martin Baltimore bombers targeted coastal artillery emplacements designated as Battery positions 19 and 19A. The mission profile involved a medium-level bombing approach at 8,000 feet, deploying a calculated payload of Semi-Armour Piercing, General Purpose, and Medium Capacity bombs equipped exclusively with tail fuzes and fractional delays. This ordnance configuration was engineered specifically to penetrate reinforced concrete and subterranean rock before detonating, successfully resulting in direct hits on two gun positions. The recording of moderate but inaccurate heavy anti-aircraft fire, which inflicted minor structural damage to one bomber, alongside the visual confirmation of an unidentified fighter engagement ten miles from Pantelleria Harbour, illustrates the persistent, layered Axis defensive posture encountered over the target area during this continuous attritional phase. 190 Phase 1: Verification & Extraction Identity Check The exact date found in the 'Date' column of the image is 7 JUN 43.