Operation

21 SQUADRON S.A.A.F. OPREP NO. 973 Operation 175/21S/M RAID ON CASARSA M/YARDS SHEET 39 ) T/off:- 0815hrs. 575 P : Maj. Dieu Parsonson Hatswell Mitchell Durrant Peckitt 471 R : Lt. Collender Gillam Deane Benson Banfield Suter 539 T : P/O Markham Rapp Dickenson Goodwin McHugh Dodson 566 S : Lt. Becke Meyer Bailey Heale McCausland Gidlow. 561 B : Lt. Isted Williams Gelb Bedford Botha Collins 474 D : Lt. Gough Horne Ryan Overee Smith TR Mathew 519 G : Lt. Hussey Quaife Wells Boast Kennedy Pienaar 513 Hv: F/O Hanna Ross Naude Oldfield van de Berg Paxton. 577 U : Lt. Muir Dale Lister Malan Foster Rourke 583 V : Lt. von Heldt Dore Main King Brown Stephan 572 J : P/O Goble Watermeyer OwenHughes Trivett Venter Wilding W/Finding:- 429 A : Lt. Reyneke Cordell Masters Winn Hennesey Cloete Tennant. Times:- All A/C 3.00 hrs. except Wind A/C . .3.30 Hrs.

1945-03-22

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Form 541

MAP

Transcriber's Notes

Phase 2: Technical Expansion (The "Transcriber's Notes") Glossary of Terms * AIR 27 / 271: United Kingdom National Archives classification for Air Ministry: Operations Record Books (ORBs); series 271 specifically catalogs the historical operational records for 21 Squadron S.A.A.F.. * BA-BH: Historical reference to the Martin Baltimore aircraft used by the squadron prior to their transition to the Martin B-26 Marauder at Campo Marino in late 1943. The aircraft serials on this manifest (e.g., 575, 471, 539) represent Marauder airframes active in March 1945. * CASARSA M/YARDS: The Marshalling Yards at Casarsa della Delizia, a strategic railway hub in Northeastern Italy. * MC/GP (Medium Capacity / General Purpose): Standard Allied aerial ordnance classifications for high-explosive bombs. For tactical interdiction of railway targets like the Casarsa yards, Marauders typically utilized 500 lb or 250 lb GP bombs to ensure the destruction of tracks, switches, and rolling stock. * MET (Meteorological Report): Meteorological intelligence. Precise atmospheric data was required for the 08:15 takeoff to ensure visual target acquisition over the Tagliamento River sector. * OPREP NO. 973: Operational Report number 973. * S.A.A.F.: South African Air Force. * T/off:- 0815hrs: Time of Take-Off, 08:15 hours. * W/Finding (Windfinding): A specialized tactical role assigned to a specific aircraft (Marauder 429 A) tasked with calculating wind velocity and drift at altitude to calibrate the bomb sights of the primary formation for maximum accuracy. Operational Context Target File 271-3_122 documents an operational sortie by 21 Squadron S.A.A.F. conducted on 22nd March 1945. The objective was the Casarsa Marshalling Yards. This mission was a primary component of Operation Bingo, the theater-wide interdiction campaign executed by the Mediterranean Allied Air Forces (MAAF) to achieve the total logistical paralysis of German Heeresgruppe C in Northern Italy. Casarsa occupied a critical position as a rail junction for the line connecting Venice and Udine, serving as a vital bottleneck for supplies moving toward the Brenner Pass and the Austrian border. By late March 1945, the Allied air offensive focused on the systematic destruction of these transport nodes to prevent the German command from repositioning their thinning frontline defenses or successfully withdrawing heavy material toward the Reich. The flight manifest identifies a twelve-aircraft formation led by Maj. Dieu in Marauder 575 P. The mission utilized a dedicated Windfinding A/C (Marauder 429 A, piloted by Lt. Reyneke), which remained airborne for 3 hours and 30 minutes—thirty minutes longer than the main formation—to ensure precision data was provided for the bombing run. This physical strike against Axis logistical infrastructure was synchronized with intensive psychological warfare; contemporaneous "Frontpost" leaflets disseminated by MAAF units informed increasingly isolated German troops that the destruction of their transport depth in Italy was a precursor to the terminal collapse of the home front in Germany. 123 Phase 1: Verification & Extraction Identity Check: 22nd March, 1945.