144 Halifaxes from 408, 415, 420, 424, 425, 426, 427, 429, 432, and 433 squadrons were joined by 46 Lancasters from 419, 428 and 431 squadrons on an attack at Karlsruhe. The crews were over the target at between 17,000 and 19,000 feet, releasing 854,000 lbs of high explosives and 678,000 lbs of incendiaries. According to reports, bombing was accurate with severe damage being caused. Among the factories destroyed was the important Durlacher Machine-tool building.

F/O W. Dunwoodie from 408 squadron returned early as the radios were u/s.

F/O W. Mitchell from 415 Squadron was hit by flak, there were holes in the rudders, elevators, and fuselage.
F/O E. Millbank and crew, flying Halifax III NR-249 coded 6U-J, were attacked by an unidentified twin engine enemy aircraft, there was no claim or damage.
F/Lt J. McAllister and crew, flying Halifax III MZ-483 coded 6U-M, were attacked by a JU-88, there was no claim or damage.
F/O A. Cruikshank and F/O D. Stewart landed at Woodbridge with brake problems.

F/Lt R. Charlton from 429 squadron was attacked by an ME-109, there was no claim or damage.
F/Lt P. Robb was hit by incendiaries. The port wing caught fire. They dove into a cloud and the fire went out.

F/O F. Jeffery from 432 Squadron was hit by flak, not serious.
F/O J. Hamilton and crew, flying Halifax VII NP-802 coded QO-S, were attacked by an unidentified twin engine enemy aircraft, there was no claim or damage.
P/O G. Sherlock landed at Elvington on return.

F/O N. Mara from 433 squadron returned early, as the stbd inner was u/s. They landed at base on 3 engines.
F/Lt P. Holmes landed at Tempsford on return.

F/Lt T. Coghlan from 434 Squadron returned early as the stbd inner was u/s. They landed safely at base on 3 engines.
F/O J. Hall and crew, flying Halifax III NR-121 coded WL-G, were attacked by an ME-109, there was no claim or damage.
F/Lt G. Halcro landed at Tholthorpe due to fuel shortage.