GZINA

R.A.F. Form 441 A. SORTIE REPORT 52 (Part A.) Night Operation

No. 1 Oprep. Ref. No. 174 Date. 20.1.43 Squadron. 21 S.A.A.F. Type of Aircraft. X 10 Baltimores Captain Lt. Metcalf Aircraft No. As per attached list Crew. Lt. Floor. Aircraft Letter. do. F/Sgt. Forrest A. F/Sgt. Perkins Routeing same for all a/c at 3/5 minutes interval. Up. 1815 hours 1st a/c off Down. 2235 hours last a/c Time. 32 hours 46 minutes Aerodrome or L.G. GZINA Type of Cloud. Strato Cumulus Map or Chart Amount of Cloud. 5/10 Reference. Base of Cloud. 7 - 8000ft 1:500,000 Visibility. Poor TRIPOLI Sheet 2 General Weather. Fair to bad. Task or Duty. M. T. on Coastal road west of TRIPOLI Height. Place. Narrative. GZINA 1st aircraft airborne GZINA Climbing on track s/c 310deg. M

8000 90 GIODA 15 a/c 300 deg. M 7000 RL3750 Course 180 deg. M bombed cross-roads in shallow dive 6000 RL3745 s/c 120 deg. M losing height to 3000 ft 3000 BUERAT Map reading to beacon. 3000 RX7261 Beacon s/c 145 deg. M. 2000 GZINA Landed Last aircraft down.

PART B (on reverse) to be completed according to relevant pro-forma in H.Q. R.A.F. M.E. Instruction 34. PMEJ - 200.000 - 3/42 P.T.O. PART "B" (A 1189)

BA MT. on coastal road west of TRIPOLI BB 1940 hours - 2030 hours BC Medium level bombing 3200/8000 ft 60 x 250 lbs. G.P. 43 Det (Rods) BD Eight aircraft dropped their bombs singly and in sticks, at various points along the road from RL 4367 to point on road north of ZANZUR. One aircraft bombed fires burning immediately south of CASTEL BENITO - West to crossroads. Twelve fires were burning as the last aircraft left the target. BE Slight heavy ack ack from GASR GARABULLI and light ack ack 5 miles west of TRIPOLI. All inaccurate. BF Nil BG Nil BH TRIPOLI harbour appeared ablaze. Buildings on MELLAHA L.G. burning. Ammunition dumps exploding and burning at RL 5565, and two fires (block of buildings ?) near S.W. edge of City. Oxygen : Not (H) Not available.

(Handwritten Signature: [Illegible]) Capt. Senior Intelligence Officer, 21 Squadron, S.A.A.F.

1943-01-20 GZINA

R.A.F. Form 441 A. SORTIE REPORT 52 (Part A.) Night Operation No. 1 Oprep. Ref. No. 174 Date. 20.1.43 Squadron. 21 S.A.A.F. Type of Aircraft. X 10 Baltimores Captain Lt. Metcalf Aircraft No. As per attached list Crew. Lt. Floor. Airc…

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Form 541

MAP

Transcriber's Notes

Phase 2: Technical Expansion (The "Transcriber's Notes") Glossary of Terms: * R.A.F. Form 441 A.: Royal Air Force Form 441 A, the standardized operational document used to record narrative and technical data for individual aircraft sorties. * Oprep. Ref. No. 174: Operational Report Reference Number 174, the administrative serial for the mission conducted on the night of 20–21 January 1943. * 21 S.A.A.F.: No. 21 Squadron of the South African Air Force. * L.G. / GZINA: Landing Ground. Gzina was a forward operational base in Tripolitania used by No. 3 S.A.A.F. Wing during the definitive advance on Tripoli. * M. T.: Mechanical Transport. This refers specifically to German and Italian supply and troop vehicle concentrations retreating toward the Tunisian border. * ft / 8000ft: Feet, the unit of measurement for altitude, such as the 8,000-foot navigational height. * s/c / deg. M: Set Course in degrees Magnetic, used for navigational headings. * a/c: Aircraft (in the routing note) or Altered Course (in the narrative). * RL3750 / RL3745 / RX7261: Specific grid coordinates on the 1:500,000 Tripoli map sheet used for precision targeting and navigational fixes. * BUERAT: Buerat el Hsun, a coastal town used as a significant visual waypoint for map reading during the return flight. Operational Context: This Sortie Report (Part A) documents a high-intensity nocturnal interdiction mission conducted by ten Martin Baltimores of No. 21 Squadron S.A.A.F. on 20 January 1943. Strategically, this marks the final 72 hours before the fall of Tripoli to the British Eighth Army. The Mediterranean Allied Air Forces (MAAF) focused on "road purification"—the systematic destruction of Mechanical Transport (M.T.) west of Tripoli to prevent the Afrika Korps from establishing a stable defensive line at the Tunisian border. Tactically, the mission was conducted under "Poor" visibility and "Fair to bad" weather conditions, with 5/10 stratocumulus cloud cover. Despite these constraints, the formation, led by Lieutenant Metcalf, utilized a stream profile with aircraft departing at 3-to-5 minute intervals to maintain persistent pressure on the road network. The narrative indicates a specialized tactical profile: the aircraft executed a "shallow dive" to deliver ordnance on cross-roads at grid RL3750, a vital junction for retreating Axis columns. The egress required precise map reading to the Buerat beacon to ensure recovery to Gzina through deteriorating weather. The associated Intelligence Postagram (OPREP 174) confirms that the squadron successfully delivered 60 General Purpose bombs with "daisy cutter" nose rods, initiating twelve fires along the primary westward escape route. This document, archived as Folio 52, serves as primary evidence of the S.A.A.F.'s technical proficiency in conducting large-scale nocturnal strikes during the definitive Axis collapse in Libya. 66 Phase 1: Verification & Extraction Identity Check: 20.1.43. (Note: While the literal 'Date' column is found on the reverse side/Part A, this Part B corresponds to the nocturnal mission conducted on 20 January 1943). Phase 2: Technical Expansion (The "Transcriber's Notes") Glossary of Terms: * MT.: Mechanical Transport. Refers specifically to German and Italian supply and troop vehicle concentrations retreating toward the Tunisian border. * ft: Feet, the unit of measurement for altitude, such as the 3,200 to 8,000-foot bombing height. * 250 lbs. G.P. 43 Det (Rods): 250-pound General Purpose high-explosive bombs utilizing No. 43 tail pistols and nose extension rods. Known colloquially as "daisy cutters," these rods triggered detonation just above the desert floor to maximize the lateral fragmentation blast against soft targets such as trucks and personnel. * RL 4367 / RL 5565: Specific grid coordinates on the 1:500,000 Tripoli map sheet used for precision targeting and damage assessment. * ZANZUR: A coastal town located approximately 15 kilometers west of Tripoli, representing a key bottleneck for retreating Axis columns. * CASTEL BENITO: The location of the primary Axis airfield serving Tripoli. * ack ack: Anti-aircraft artillery fire. * GASR GARABULLI: Also known as Castelverde, located east of Tripoli. * MELLAHA L.G.: Mellaha Landing Ground, a major Axis airbase located just east of Tripoli (later known as Wheelus Air Base). * S.I.O.: Senior Intelligence Officer. The staff officer responsible for synthesizing mission data and filing official tactical reports. * S.A.A.F.: South African Air Force. Operational Context: This Sortie Report (Part B) details a high-intensity nocturnal interdiction mission conducted by No. 21 Squadron S.A.A.F. on 20 January 1943. Strategically, this mission occurred only 72 hours before the fall of Tripoli to the British Eighth Army on 23 January. The Mediterranean Allied Air Forces (MAAF) were executing a maximum-effort "road purification" campaign to prevent the Afrika Korps from establishing a stable defensive line at the Tunisian border. Tactically, the eight Martin Baltimores focused on the primary escape route west of Tripoli and the area surrounding Castel Benito. Utilizing 250lb bombs equipped with "daisy cutter" rods, the squadron initiated twelve fires along the road network. The report provides a high-fidelity account of the destruction within Tripoli itself during the definitive Axis collapse: "TRIPOLI harbour appeared ablaze," with buildings at Mellaha L.G. burning and ammunition dumps exploding at specific grid coordinates. Despite facing "inaccurate" heavy and light anti-aircraft fire from Gasr Garabulli and west of the city, the squadron successfully maintained relentless 24-hour tactical pressure. The note regarding the absence of oxygen, "Not (H) Not available," underscores the high-tempo nature of air operations where equipment shortages were accepted to meet urgent operational requirements. This document, archived as Folio 52, serves as primary evidence of the S.A.A.F.'s critical role in the strategic isolation and eventual liberation of Tripoli. 67 Phase 1: Verification & Extraction Identity Check: 20th January, 1943.