Took off from Elsham Wolds at 19:24 in Lancaster Mk III (Sqn code: UL-E2 Bomber Command) to attack a flying-bomb facility in France.
Killed: Flight Sergeant Francis Allen RAF KIA Calais Southern Cemetery Plot S. Grave 3. France. Flight Sergeant Herman Backler RCAF R/195442 KIA Calais Canadian War Cemetery, grave 4. G. 8. Flying Officer Ernest Augustus Duerr RAF KIA Calais Southern Cemetery Plot S. Grave 4. Flight Sergeant Lloyd L. Johnston RCAF R/188969 KIA Calais Canadian War Cemetery, grave 4. G. 7. Sergeant Leonard Maiden RAF KIA Marquise Communal Cemetery Plot 2. Row C. Grave 9.
POWs including Armstrong: F/Lt Reginald Bibby RAF POW Stalag Luft L3 Sagan and Belaria.
