248 Halifaxes from 408, 415, 420, 424, 425, 426, 427, 429, 431, 432, 433, and 434 squadrons were joined by 45 Lancasters from 419 and 428 squadrons on an attack at Dortmund. This was the greatest effort that the 6 group would send out during the war. The crews were over the target between 17,000 and 20,500 feet releasing 1,510,000 lbs of high explosives and 383,000 lbs of incendiaries. According to reports, bombing was accurate and the transportation and industrial sections were well hit.

P/O T. Barber and crew from 408 Squadron, flying Halifax VII NP-718 coded EQ-Z, were attacked by an ME-109, many strikes were seen and the enemy aircraft exploded in mid air. It was claimed destroyed. Crew landed at Chedburgh on return due to poor weather at base.
S/Ldr G. Tambling, S/Ldr J. Easton, F/Lt J. Brown, P/O E. Patzer, P/O R. Harlow, F/O W. Shields, F/Lt H. Reeves, F/O H. Jones, F/O R. Bowhay, F/Lt H. Minhinnick, F/O R. Johnson, and F/O V. Gilson landed at Chedburgh on return due to poor weather at base.
F/O E. Finch, F/O G. Frankling, F/Lt A. Scheelar, F/O H. Sokoloff, P/O G. Harpwood, and P/O R. Stewart landed at Stradishall on return due to poor weather at base.
F/O E. Mowatt landed at  Wratting Common on return due to poor weather at base.
F/O B. Wallace landed at Woodbridge on return due to poor weather at base.
F/O D. Kennedy landed at Bury St. Edmonds on return due to poor weather at base.

21 crews from 415 Squadron departed base between 15:57 and 16:30, they were over the target between 20:27 and 20:49, returning between 22:10 and 22:36.
F/O J. Weir and crew flying Halifax III  MZ-654 coded 6U-L  returned without bombing as the load hung up. They landed at Rattlesden on return due to poor weather at base.
F/O D. McTaggart, F/O S. McFadden, F/O C. Chartier, F/Lt T. Chapman, P/O W. MacNeil, F/O R. Gingrich, F/O B. Roberts and F/O J. Little landed at Knettishall on return due to poor weather at base.
F/Lt J. McAllister and F/O O. Lindquist and crews landed at Wratting Common on return due to poor weather at base.
F/O W. Sherman, F/O R. Sierolawski, F/Lt H. Barnes and F/O J. Kerr and crews landed at Stradishall on return due to poor weather at base.
F/O D. Stewart and crew flying Halifax III  LL-593 coded 6U-M  landed at Snetterton Heath on return due to poor weather weather at base.
F/O H. Knobovitch and crew flying Halifax III  MZ-603 coded 6U-E  landed at Coltishall on return due to poor weather at base.
F/O W. Regimbal and crew flying Halifax III  LL-575 coded 6U-A  landed at Mendlesham on return due to poor weather at base.
P/O D. McNeill and crew flying Halifax III  MZ-585 coded 6U-Z  landed at Deopham Green on return due to poor weather at base.

F/Lt J. Errington from 419 Squadron returned early as the stbd inner was u/s. They landed safely at base on 3 engines.
P/O H. Cohen and F/O P. Griffith landed at Wyton on return.
F/Lt J. Anderson and F/O G. Sheahan landed at Woodbridge on return.
F/O A. Roy, F/Lt R. Swartz, F/Lt C. Black, F/O R. Millar, F/O W. Osborn, F/Lt H. Cave, P/O R. Mansfield, F/Lt W. Cameron, F/O N. Vatne, F/Lt J. Barlow, F/O J. Calder, F/Lt W. McGuffin, F/O E. Bruyns, F/Lt R. Kent, F/Lt A. Rokeby, F/O C. Williams, and F/Lt A. Bishop landed at Bourne do to poor weather at base.

F/O W. MacDonald from 420 Squadron returned early as the stbd inner was u/s. They landed safely at base on 3 engines.
F/O C. McKenzie returned early as the port outer caught fire. They landed safely at Tuddenham on 3 engines.
P/O J. Tease was hit by flak, not serious. They landed at Woodbridge on return due to poor weather at base.
F/O G. Haslop had the port inner go u/s on return. They landed at Woodbridge on return due to poor weather at base.
F/Lt J. S. Sefton landed at Woodbridge on return due to poor weather at base.
F/Lt G. Jones landed at Bidwell on return due to poor weather at base.
F/Lt A. Plummer landed at Wratting Common on return due to poor weather at base.
F/O A. Caine, F/Lt T. Ainslie, F/O J. Bonner, P/O R. Field, F/O H. Asher, F/O W. English, F/O J. A. Sefton, F/Sgt C. Reid, F/Lt V. Motherwell, F/O E. Johnston, F/O F. Beairsto, F/O D. McLellan, F/Lt G. Heron, F/O R. Gallen, F/O E. McKeown and F/O J. Cox landed at Market Harborough due to poor weather at base.

F/O W. Bonar from 424 Squadron returned early as the port outer was u/s. They landed safely at base on 3 engines.
F/O H. Cowan returned early as the rear turret was u/s.
F/O G. Hawthorn landed at Sandtoft due to poor weather at base.
S/Ldr A. Fentamin landed at Cheburgh on return due to poor weather at base.
F/O R. Earl, F/O E. Lefebvre, P/O J. Lang, F/O D. Chance, F/O L. Loving, F/Lt F. Aldworth, F/O R. Burns, F/Lt D. Brown, F/O E. Smith, F/O F. Pearson, F/Lt J. Dundas, F/Lt W. Anderson, F/Lt R. Guild, F/Lt R. Green, F/O L. Wright, F/Lt G. Arbuckle, and F/O J. Hollinger landed at Mendlesham due to poor weather at base.

P/O A. Martel from 425 Squadron returned early due to the stbd inner going u/s. Landed at base on 3 engines.
F/O G. Lareau returned early as they were unable to raise the under carriage.
F/O T. MacKinnon and crewn flying Halifax III LW-381 coded KW-Bn were attacked by an ME-110, some strikes were seen and it was claimed damaged.

F/O J. Lowe from 426 Squadron returned early due to the port inner going u/s. Landed at Carnaby on 3 engines.
P/O R. Goreham was hit by flak, not serious. They landed at Wratting Common on return due to poor weather at base.
W/O2 M. Fraser was hit by flak, hydraulics u/s. They landed at Wratting Common on return due to poor weather at base.
F/O S. Seaman landed at Carnaby on return due to poor weather at base.
F/O J. Sheridan, P/O C. McKinstry, P/O G. Hamilton, P/O R. Jones, P/O N. Becker, F/O S. Simmons, F/O M. Casselman, and F/O P. Labelle landed at Wratting Common on return due to poor weather at base.
F/O H. McLure and F/O W. Kent landed at Chedburgh due to poor weather at base.
S/Ldr R. Cowans landed at  Stradishall on return due to poor weather at base.
F/Lt. W. Scott, RCAF--POW and crew, flying Halifax VII  NP-739  coded OW-U failed to return from this operations.

P/O J. Wilson RAF
F/O W. Ames RCAF--POW
F/O A. Livingstone RCAF--POW
P/O J. Mack RCAF--POW
P/O G. Brooks RCAF
P/O J. Short, RCAF

F/O G. Plyley from 427 Squadron returned early due to the stbd outer going u/s. They landed safely at base on 3 engines.
F/O G. Tegerdine and crew, flying Halifax III MZ-823 coded ZL-A, were attacked by a three unidentified enemy aircraft, there was no claim or damage. They landed at Bury St. Edmonds on return due to poor weather at base. 
W/Cdr F. Ball, F/Lt H. Woodruff, P/O G. Kirby, W/Cdr V. Ganderton, F/Lt B. Garvin, F/Lt G. Slocombe, F/O W. Brittain, F/O T. Wagar, F/O L. Ayers, F/O F. Wilsher, F/Sgt W. Wilson, F/O F. Brownell, F/O D. Hepburn, F/O E. Mayo, F/O J. Mulholland, F/O W. Ruffell, F/O J. Smart, and P/O I. Thomson landed at Bury St. Edmonds on return due to bad weather at base.

F/O N. Noel from 428 Squadron was hit by flak, holes in fuselage, port wing and rear turret. They landed at Warboys on return due to poor weather at base.
F/O F. Raftery and crew, flying Lancaster X KB-737 coded NA-R, were attacked by a JU-88, there was no claim or damage. They landed at Warboys on return due to poor weather at base.
F/O G. Pauli and crew, flying Lancaster X KB-820 coded NA-T, were attacked by an FW-190 and  by an ME-410, there was no claim or damage. They landed at Wyton on return due to poor weather at base.
F/O W. Mytruk, F/O A. Carter, and F/O W. Edmondson landed at Wyton on return due to poor weather at base.
F/O R. Dench landed at Woodbridge on return due to poor weather at base.
P/O H. Humber, F/O W. Tynan, F/Lt E. Graham, F/O L. Kagna, F/Lt G. Quinn, F/O H. Walker, S/Ldr G. Gonyou, F/Sgt D. Mackie, F/O B. Miller, S/Ldr G. Edwards, F/O J. Holtze, F/O L. Mossman, F/Lt T. Nichol-Carne, F/O J. Koresky, F/O S. Huston, and F/O K. Roulston landed at Warboys on return due to poor weather at base.

F/O W. Thomas from 429 Squadron landed at Deopham Green on return.
F/O M. Lanin landed at Rackheath on return due to poor weather at base.
F/O C. Gray, F/O J. Prentice, F/Lt A. Childs, F/O A. MacDonald, F/Lt R. Lawlor, P/O B. Drewery, F/O J. Barlow, F/O L. Keelan, F/Lt E. Hamm, F/O R. James, F/O J. Lasek, F/O C. Lee, F/Lt S. Mitchell, F/Lt A. Milner, F/Lt D. Hendrickson, P/O W. Fikis, S/Ldr R. Bolduc, F/O D. Gillis, F/Lt H. Brown, and F/O H. Hogarth landed at Snetterton Heath on return due to poor weather at base.

F/O T. Shore from 431 Squadron returned without bombing. They were hit by flak short of the target. Fuel tanks were holed and leaking, controls damaged. They landed safely at Woodbridge on return. 
F/O L. Laing and crew, flying Halifax III MZ-907 coded SE-F, were attacked by a JU-88, some strikes were seen. They landed at Wratting Common on return due to poor weather at base.
F/O T. Rhodes landed at Stradishall on return due to poor weather at base.
F/O R. Tonnellier, P/O A. Pitzek, F/O B. Kaplansky, F/O A. Huchala, F/O G. McNeill, F/Lt D. Borland, F/Lt M. Chisholm, F/O D. Hagar, F/O J. Patterson, F/O J. Lightbown, F/O B. Mawhinney, F/Lt N. MacLeod, F/O H. Williamson, F/O S. Sorenson, F/O R. Harrison, F/O J. Morton, and W/Cdr E. Mitchell landed at Wratting Common on return due to poor weather at base.

F/O J. Mills from 432 Squadron landed at Downham Market on return due to poor weather at base.
F/O D. Best, F/Lt W. Tobias, F/O G. Stunden, F/Sgt N. Franko, P/O L. McGuire, F/O A. Craig, P/O H. Britton, F/O J. Gault, F/O M. Krakowsky, F/O R. Diamond, F/O S. Dean, and S/Ldr G. Larson landed at Sudbury on return due to poor weather at base.
F/O A. Bews and F/O A. Potter landed at Methwold on return due to poor weather at base.
F/O G. McNicoll landed at Woodbridge on return due to poor weather at base.
P/O J. Hamilton and F/O C. Hemming landed at Bury St. Edmonds on return due to poor weather at base.
F/O W. Saye landed at Tuddenham on return due to poor weather at base.
W/Cdr J. MacDonald landed at Wratting Common on return due to poor weather at base.

F/Sgt W. Jensen from 433 Squadron returned early due to the stbd inner going u/s. They landed safely at base on 3 engines.
F/O S. McKellar was hit by flak, holes in wings. They landed safely at Lavenham on return.
S/Ldr E. Van Slyck was attacked by an enemy aircraft. There was no damage or claim. Landed at Lavenham on return.
F/O T. Kelly and crew, flying Halifax III MZ-815 coded BM-X, were hit by falling incendiaries over the target, the nose was blown off and F/Sgt N. Dixon RCAF, the bomb aimer was injured. They were also attacked by a JU-88, there was no claim or damage.
F/O R. Mountford and crew, flying Halifax III NR-120 coded BM-A, were attacked by a unidentified single engine aircraft, there was no claim or damage. They landed at Chedburgh on return due to poor weather at base.
P/O J. Smale landed at Mildenhall on return due to poor weather at base.
P/O A. Bond, F/Lt T. Prescott, F/O N. Mara, F/O J. Burch, F/O J. Nixon, F/Lt O. Orendorff, F/Lt D. McGrath, P/O G. Valentine, F/O R. Bertran, F/O D. Guy, F/O R. Russell, F/O R. Forbes, F/Lt W. Pierce, and F/O E. Smyth landed at Lavenham on return due poor weather at base.
P/O G. Valentine RCAF--POW and crew, flying Halifax III  LW-129  coded BMG, failed to return from this operation.

Sgt. A. Dollery, RAF
W/O1 J. Lee, RCAF--POW
F/O H. English, RCAF--POW
P/O J. Tazuk, RCAF
P/O A. McGraw, RCAF
P/O W. Ritchie, RCAF

F/Lt L. Browning from 434 Squadron landed at Woodbridge on return due to poor weather at base.
F/Lt G. Halcro landed at Mildenhall on return due to poor weather at base.
F/O J. Moffatt and crew, flying Halifax III MZ-878 coded WL-E, were attacked by an FW-190, there was no claim or damage.