Took off from Breighton at 22:18 in Halifax Mk III (Sqn code EY-H Bomber Command) on an operation to Amiens, France to bomb rail communications.
Aircraft was shot down by a night fighter and crashed at Le Champ de L'abbaye, Crèvecœur-le-Grand, Oise 60 France.
Killed includes Couper: Pilot Officer James Edward Byers RCAF J/89955 KIA Poix-De-Picardie Churchyard, Row A. Coll. grave 1-5. Pilot Officer Douglas Idris Davies RCAF J/89890 KIA Poix-De-Picardie Churchyard, Row A. Coll. grave 1-5. Flying Officer George Kenneth Lancaster RCAF J/23972 KIA Poix-De-Picardie Churchyard, Row A. Coll. grave 1-5. Flying Officer John Samuel Ritchie RCAF J/25867 KIA Poix-De-Picardie Churchyard, Row A. Coll. grave 1-5. Flying Officer John Frederick Wyllie RCAF J/25814 pilot KIA Poix-De-Picardie Churchyard, Row A. Coll. grave 1-5. Sergeant William Duncan RAF KIA Poix-De-Picardie Churchyard Row A. Coll. grave 1-5.
