21 Halifaxes from 408 and 419 Squadrons were joined by 64 Wellingtons from 420, 424, 425, 426, 427, 428, and 429 Squadrons on an attack of the docks at St. Nazaire. The crews were over the target at between 12,000 and 20,000 feet, releasing 175,000 lbs of high explosives and 148,000 lbs of incendiaries. According to reports there was serious damage to the dock area and portions of the town.

Sgt J. Palmer from 419 Squadron returned early as one engine was u/s. They landed safely at base on 3 engines.
Sgt T. Jackson was hit by flak, there were holes in the stbd wing and fuselage.
P/O J. Dickson and crew flying Halifax II DT-669 coded VR-L were attacked by an unidentified single engine aircraft, there was no claim or damage.

Sgt P. Cozens, Sgt G. Cooke, P/O S. Dunn, Sgt J. Kennedy, and Sgt C. Tucker from 420 Squadron landed at Pershore on return.
Sgt J. Clary landed at Exeter on return.

Sgt L. Wilson from 424 Squadron landed at Boscombe Down on return.

Sgt J. Brousseau RCAF and crew from 425 Squadron, flying Wellington III BJ-918 coded KW-F, crashed on takeoff after the stbd engine lost power. 

Sgt. J. Moreau, RCAF
Sgt. J. Fontaine, RCAF
P/O D. Hodgetts, RCAF
Sgt. H. Marceau, RCAF
P/O T. Irwin, RCAF

Sgt L. Thompson from 426 Squadron returned early as the hydraulics were u/s.
F/Sgt S. Pennington landed at Pershore on return.
F/Sgt H. Patch landed at Shawbury on return due to a fuel shortage.

Sgt G. Southwood RAF and crew from 427 Squadron, flying Wellington III  X-3563 coded ZL-T, strayed west and the crew bailed out over Ireland

Sgt M Summers, RCAF
F/Sgt J. Grover, RCAF
F/Sgt A. Puffer, RCAF
Sgt J. Blue, RCAF
Sgt W. Chalk, RCAF

W/O2 W. Hartney, RCAF and crew, flying Wellington III BK-343 coded ZL-V, failed to return from this operation.

F/Sgt J. Kilpatrick, RCAF
F/Sgt D. Ferguson, RCAF
Sgt R. Radford, RAF
Sgt E. Allison, RAF–POW
F/Sgt J. Ward, RCAF

Sgt W. Harris from 428 Squadron returned early as the port engine was u/s. They landed safely at base on 1 engine.
Sgt W. Weeks returned early as the stbd engine was u/s. They landed safely on 1 engine at Dalton.
W/O1 A. Harrison and Sgt V. Sylvester landed at Boscombe Down on return.

Sgt E. Willey from 429 Squadron returned early. There was a fire in the bomb bay. They landed safely at Abington.
Sgt S. Hanan landed at High Ercall on return.
F/Lt A. Chipling landed at Hurn on return.
Sgt H. Carty landed at Middle Wallop on return.
Sgt K. Holbech landed at Pershore on return.
Sgt S. Bruce landed at Exeter on return.
F/Sgt R. Conroy landed at Chivenor on return.
Sgt G. De Bussac landed at Hemswell on return.
Sgt G. Kennedy landed Brize Norton on return.